{"id":5380,"date":"2023-06-05T16:19:39","date_gmt":"2023-06-05T08:19:39","guid":{"rendered":"http:\/\/www.dcl-controls.com\/?p=5380"},"modified":"2023-06-05T16:19:39","modified_gmt":"2023-06-05T08:19:39","slug":"why-voltage-signal-oscillate","status":"publish","type":"post","link":"https:\/\/dcl-actuator.com\/en_us\/2023\/06\/05\/why-voltage-signal-oscillate\/","title":{"rendered":"Why do voltage-type output signals oscillate under certain operating conditions?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"5380\" class=\"elementor elementor-5380\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-db466f0 elementor-section-content-middle elementor-hidden-desktop elementor-hidden-tablet elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"db466f0\" data-element_type=\"section\">\n\t\t\t\t\t\t<div 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742C138 771 138 800 167 829 196 858 225 858 254 829L496 587 738 829C750 842 767 846 783 846 800 846 817 842 829 829 842 817 846 804 846 783 846 767 842 750 829 737L588 500 833 258C863 229 863 200 833 171 804 137 775 137 742 167Z\"><\/path><\/svg>\t\t<\/div>\n\t\t\t\t\t<nav class=\"elementor-nav-menu--dropdown elementor-nav-menu__container\" aria-hidden=\"true\">\n\t\t\t\t<ul id=\"menu-2-dcac02d\" class=\"elementor-nav-menu\"><li class=\"sidebar-menu-1st-level menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-9572\"><a href=\"\/en_us\/support\/actuators\/\" class=\"elementor-item\" tabindex=\"-1\">Electric actuator<\/a>\n<ul class=\"sub-menu elementor-nav-menu--dropdown\">\n\t<li class=\"sidebar-menu-2nd-level menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-9573\"><a href=\"#\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">realize<\/a>\n\t<ul class=\"sub-menu elementor-nav-menu--dropdown\">\n\t\t<li class=\"sidebar-menu-3rd-level menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-9586\"><a href=\"\/en_us\/support\/actuators\/why-electrical-actuator\/\" class=\"elementor-sub-item\" tabindex=\"-1\">Why electric actuators?<\/a>\n\t\t<ul class=\"sub-menu elementor-nav-menu--dropdown\">\n\t\t\t<li class=\"sidebar-menu-chapter-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9587\"><a href=\"\/en_us\/support\/actuators\/why-electrical-actuator\/#reliable\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">reliable and durable<\/a><\/li>\n\t\t\t<li class=\"sidebar-menu-chapter-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9588\"><a href=\"\/en_us\/support\/actuators\/why-electrical-actuator\/#small\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">compact<\/a><\/li>\n\t\t\t<li class=\"sidebar-menu-chapter-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9589\"><a href=\"\/en_us\/support\/actuators\/why-electrical-actuator\/#high-efficiency\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">high efficiency<\/a><\/li>\n\t\t\t<li class=\"sidebar-menu-chapter-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9590\"><a href=\"\/en_us\/support\/actuators\/why-electrical-actuator\/#controllability\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Controllability + High Precision<\/a><\/li>\n\t\t\t<li class=\"sidebar-menu-chapter-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9591\"><a href=\"\/en_us\/support\/actuators\/why-electrical-actuator\/#usability\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">usability<\/a><\/li>\n\t\t\t<li class=\"sidebar-menu-chapter-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9592\"><a href=\"\/en_us\/support\/actuators\/why-electrical-actuator\/#dcl-actuator\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">DCL electric actuator<\/a><\/li>\n\t\t<\/ul>\n<\/li>\n\t\t<li class=\"sidebar-menu-3rd-level menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-9569\"><a href=\"\/en_us\/support\/actuators\/how-actuator-works\/\" class=\"elementor-sub-item\" tabindex=\"-1\">How do electric actuators work?<\/a>\n\t\t<ul class=\"sub-menu elementor-nav-menu--dropdown\">\n\t\t\t<li class=\"sidebar-menu-chapter-level menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-9574\"><a href=\"\/en_us\/support\/actuators\/how-actuator-works\/#on-off-actuator\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Switching electric actuator<\/a>\n\t\t\t<ul class=\"sub-menu elementor-nav-menu--dropdown\">\n\t\t\t\t<li class=\"sidebar-menu-chapter-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9575\"><a href=\"\/en_us\/support\/actuators\/how-actuator-works\/#with-relay-ac220v\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Control via relay - AC220V<\/a><\/li>\n\t\t\t\t<li class=\"sidebar-menu-chapter-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9577\"><a href=\"\/en_us\/support\/actuators\/how-actuator-works\/#with-relay-dc24v\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Control via relay - DC24V<\/a><\/li>\n\t\t\t\t<li class=\"sidebar-menu-chapter-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9578\"><a href=\"\/en_us\/support\/actuators\/how-actuator-works\/#with-switch-ac220v\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Control by switch - AC220V<\/a><\/li>\n\t\t\t\t<li class=\"sidebar-menu-chapter-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9579\"><a href=\"\/en_us\/support\/actuators\/how-actuator-works\/#with-switch-dc24v\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Control via switch - DC24V<\/a><\/li>\n\t\t\t<\/ul>\n<\/li>\n\t\t\t<li class=\"sidebar-menu-chapter-level menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-9576\"><a href=\"\/en_us\/support\/actuators\/how-actuator-works\/#modulation-actuator\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Regulating electric actuator<\/a>\n\t\t\t<ul class=\"sub-menu elementor-nav-menu--dropdown\">\n\t\t\t\t<li class=\"sidebar-menu-chapter-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9580\"><a href=\"\/en_us\/support\/actuators\/how-actuator-works\/#with-4-20ma\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Control via 4-20mA<\/a><\/li>\n\t\t\t\t<li class=\"sidebar-menu-chapter-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9581\"><a href=\"\/en_us\/support\/actuators\/how-actuator-works\/#with-2-10v\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Controlled by 2-10V<\/a><\/li>\n\t\t\t\t<li class=\"sidebar-menu-chapter-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9582\"><a href=\"\/en_us\/support\/actuators\/how-actuator-works\/#with-bus\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Control via fieldbus<\/a><\/li>\n\t\t\t\t<li class=\"sidebar-menu-chapter-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9583\"><a href=\"\/en_us\/support\/actuators\/how-actuator-works\/#with-iiot\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Control through the Industrial Internet of Things<\/a><\/li>\n\t\t\t<\/ul>\n<\/li>\n\t\t<\/ul>\n<\/li>\n\t\t<li class=\"sidebar-menu-3rd-level menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-9593\"><a href=\"\/en_us\/support\/actuators\/what-dcl-actuator-drives\/\" class=\"elementor-sub-item\" tabindex=\"-1\">Which valves can DCL electric actuators drive?<\/a>\n\t\t<ul class=\"sub-menu elementor-nav-menu--dropdown\">\n\t\t\t<li class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-9594\"><a href=\"\/en_us\/support\/actuators\/what-dcl-actuator-drives\/#butterfly-valve\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Actuated Butterfly Valve<\/a><\/li>\n\t\t\t<li class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-9595\"><a href=\"\/en_us\/support\/actuators\/what-dcl-actuator-drives\/#ball-valve\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Actuated Ball Valves<\/a><\/li>\n\t\t\t<li class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-9596\"><a href=\"\/en_us\/support\/actuators\/what-dcl-actuator-drives\/#damper\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Actuated dampers and damper flaps<\/a><\/li>\n\t\t\t<li class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-9600\"><a href=\"\/en_us\/support\/actuators\/what-dcl-actuator-drives\/#other-valves\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Driving other types of valves<\/a><\/li>\n\t\t\t<li class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-9597\"><a href=\"\/en_us\/support\/actuators\/what-dcl-actuator-drives\/#valve-requirement\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Determine specific valve drive parameters<\/a><\/li>\n\t\t\t<li class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-9598\"><a href=\"\/en_us\/support\/actuators\/what-dcl-actuator-drives\/#dcl-para-range\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Parameter range of DCL electric actuators<\/a><\/li>\n\t\t\t<li class=\"menu-item menu-item-type-custom menu-item-object-custom menu-item-9599\"><a href=\"\/en_us\/support\/actuators\/what-dcl-actuator-drives\/#drive-others\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Driving other devices<\/a><\/li>\n\t\t<\/ul>\n<\/li>\n\t<\/ul>\n<\/li>\n\t<li class=\"sidebar-menu-2nd-level menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-9585\"><a href=\"#\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">selection<\/a>\n\t<ul class=\"sub-menu elementor-nav-menu--dropdown\">\n\t\t<li class=\"sidebar-menu-3rd-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9570\"><a href=\"\/en_us\/tech\/certifications\/\" class=\"elementor-sub-item\" tabindex=\"-1\">Product Certification<\/a><\/li>\n\t<\/ul>\n<\/li>\n\t<li class=\"sidebar-menu-2nd-level menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-9584\"><a href=\"\/en_us\/tech\/user-manual\/\" class=\"elementor-sub-item\" tabindex=\"-1\">Installation and commissioning<\/a>\n\t<ul class=\"sub-menu elementor-nav-menu--dropdown\">\n\t\t<li class=\"sidebar-menu-3rd-level menu-item menu-item-type-post_type menu-item-object-post menu-item-9683\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/05\/22\/how-to-install-actuator\/\" class=\"elementor-sub-item\" tabindex=\"-1\">How do I mount an actuator to a valve?<\/a><\/li>\n\t\t<li class=\"sidebar-menu-3rd-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9608\"><a href=\"\/en_us\/support\/actuators\/how-to-wire\/\" class=\"elementor-sub-item\" tabindex=\"-1\">How do I install the electric actuator cable?<\/a><\/li>\n\t\t<li class=\"sidebar-menu-3rd-level menu-item menu-item-type-post_type menu-item-object-post menu-item-9685\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/05\/23\/set-up-dcl-valve\/\" class=\"elementor-sub-item\" tabindex=\"-1\">How to set the on\/off type motorized valve?<\/a><\/li>\n\t\t<li class=\"sidebar-menu-3rd-level menu-item menu-item-type-post_type menu-item-object-post menu-item-9688\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/05\/31\/setting-switch-actuator\/\" class=\"elementor-sub-item\" tabindex=\"-1\">How do I set up a switching actuator with a bit sender function?<\/a><\/li>\n\t\t<li class=\"sidebar-menu-3rd-level menu-item menu-item-type-post_type menu-item-object-post menu-item-9687\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/05\/25\/set-up-dcl-actuator\/\" class=\"elementor-sub-item\" tabindex=\"-1\">How to set the regulated motorized valve?<\/a><\/li>\n\t\t<li class=\"sidebar-menu-3rd-level menu-item menu-item-type-post_type menu-item-object-post menu-item-9690\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/08\/08\/calibrate-4-20ma-input\/\" class=\"elementor-sub-item\" tabindex=\"-1\">How do I calibrate (align) the input signal of an actuator?<\/a><\/li>\n\t\t<li class=\"sidebar-menu-3rd-level menu-item menu-item-type-post_type menu-item-object-post menu-item-9686\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/05\/12\/set-hysteresis\/\" class=\"elementor-sub-item\" tabindex=\"-1\">How do I set the deadband of an actuator?<\/a><\/li>\n\t<\/ul>\n<\/li>\n\t<li class=\"sidebar-menu-2nd-level menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-9607\"><a href=\"#\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">(computer) file<\/a>\n\t<ul class=\"sub-menu elementor-nav-menu--dropdown\">\n\t\t<li class=\"sidebar-menu-3rd-level menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-9601\"><a href=\"#\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Application Manual<\/a>\n\t\t<ul class=\"sub-menu elementor-nav-menu--dropdown\">\n\t\t\t<li class=\"menu-item menu-item-type-post_type menu-item-object-post menu-item-9684\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/08\/01\/modbus-um\/\" class=\"elementor-sub-item\" tabindex=\"-1\">DCL Actuator Modbus Application Manual<\/a><\/li>\n\t\t\t<li class=\"menu-item menu-item-type-post_type menu-item-object-post menu-item-9689\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/04\/23\/ventilation-valve-torque\/\" class=\"elementor-sub-item\" tabindex=\"-1\">Ventilation butterfly valve torque reference table<\/a><\/li>\n\t\t<\/ul>\n<\/li>\n\t\t<li class=\"sidebar-menu-3rd-level menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-9604\"><a href=\"#\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Common Troubleshooting<\/a>\n\t\t<ul class=\"sub-menu elementor-nav-menu--dropdown\">\n\t\t\t<li class=\"menu-item menu-item-type-post_type menu-item-object-post menu-item-9698\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/08\/03\/switch-actuator\/\" class=\"elementor-sub-item\" tabindex=\"-1\">Switching actuator<\/a><\/li>\n\t\t\t<li class=\"menu-item menu-item-type-post_type menu-item-object-post menu-item-9697\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/08\/03\/servo-actuator\/\" class=\"elementor-sub-item\" tabindex=\"-1\">Adjustable actuator<\/a><\/li>\n\t\t\t<li class=\"menu-item menu-item-type-post_type menu-item-object-post menu-item-9694\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/08\/03\/dcl-gey-24v\/\" class=\"elementor-sub-item\" tabindex=\"-1\">DCL24V Actuator<\/a><\/li>\n\t\t\t<li class=\"menu-item menu-item-type-post_type menu-item-object-post menu-item-9695\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/08\/03\/dcl-02-switch\/\" class=\"elementor-sub-item\" tabindex=\"-1\">DCL-02 Switching Actuator<\/a><\/li>\n\t\t\t<li class=\"menu-item menu-item-type-post_type menu-item-object-post menu-item-9696\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/08\/03\/dcl-02-servo\/\" class=\"elementor-sub-item\" tabindex=\"-1\">DCL-02 Regulating Actuator<\/a><\/li>\n\t\t<\/ul>\n<\/li>\n\t\t<li class=\"sidebar-menu-3rd-level menu-item menu-item-type-custom menu-item-object-custom menu-item-has-children menu-item-9606\"><a href=\"#\" class=\"elementor-sub-item elementor-item-anchor\" tabindex=\"-1\">Standards (ISO\/GB\/EU)<\/a>\n\t\t<ul class=\"sub-menu elementor-nav-menu--dropdown\">\n\t\t\t<li class=\"menu-item menu-item-type-post_type menu-item-object-post menu-item-9691\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/09\/18\/jb-t-8219-2016\/\" class=\"elementor-sub-item\" tabindex=\"-1\">JB\/T 8219-2016 General and intelligent electric actuators for industrial process control systems<\/a><\/li>\n\t\t\t<li class=\"menu-item menu-item-type-post_type menu-item-object-post menu-item-9693\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/09\/18\/gb-t-3369-1-2008-iec-60381-1-1982\/\" class=\"elementor-sub-item\" tabindex=\"-1\">GB\/T 3369.1-2008\/IEC 60381-1:1982 Electric actuator current signal 4-20mA Applicable standards<\/a><\/li>\n\t\t\t<li class=\"menu-item menu-item-type-post_type menu-item-object-post menu-item-9692\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/09\/18\/gb-t-3369-2-2008-iec-60381-2-1978\/\" class=\"elementor-sub-item\" tabindex=\"-1\">GB\/T 3369.2-2008\/IEC 60381-2:1978 Electric actuator voltage signal 0-10V Applicable standards<\/a><\/li>\n\t\t<\/ul>\n<\/li>\n\t\t<li class=\"sidebar-menu-3rd-level menu-item menu-item-type-post_type menu-item-object-page menu-item-9699\"><a href=\"https:\/\/dcl-actuator.com\/en_us\/support\/actuator-tech-posts\/\" class=\"elementor-sub-item\" tabindex=\"-1\">Technical Articles<\/a><\/li>\n\t<\/ul>\n<\/li>\n\t<li class=\"sidebar-menu-2nd-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9603\"><a href=\"\/en_us\/tech\/faq\/\" class=\"elementor-sub-item\" tabindex=\"-1\">FAQ<\/a><\/li>\n<\/ul>\n<\/li>\n<li class=\"sidebar-menu-1st-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9602\"><a href=\"\/en_us\/downloads\/\" class=\"elementor-item\" tabindex=\"-1\">downloading<\/a><\/li>\n<li class=\"sidebar-menu-1st-level menu-item menu-item-type-custom menu-item-object-custom menu-item-9605\"><a href=\"\/en_us\/tech\/other-tech-question\/\" class=\"elementor-item\" tabindex=\"-1\">Other technical advice<\/a><\/li>\n<\/ul>\t\t\t<\/nav>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1893469 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1893469\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-61d5be0\" data-id=\"61d5be0\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-34e7055 elementor-widget elementor-widget-heading\" data-id=\"34e7055\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Why do voltage-type output signals oscillate under certain operating conditions?<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b816885 elementor-align-left elementor-widget elementor-widget-post-info\" data-id=\"b816885\" data-element_type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-847a4e2 elementor-inline-item\" itemprop=\"author\">\n\t\t\t\t\t\t<a href=\"https:\/\/dcl-actuator.com\/en_us\/author\/admin\/\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-user-circle\" viewbox=\"0 0 496 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M248 104c-53 0-96 43-96 96s43 96 96 96 96-43 96-96-43-96-96-96zm0 144c-26.5 0-48-21.5-48-48s21.5-48 48-48 48 21.5 48 48-21.5 48-48 48zm0-240C111 8 0 119 0 256s111 248 248 248 248-111 248-248S385 8 248 8zm0 448c-49.7 0-95.1-18.3-130.1-48.4 14.9-23 40.4-38.6 69.6-39.5 20.8 6.4 40.6 9.6 60.5 9.6s39.7-3.1 60.5-9.6c29.2 1 54.7 16.5 69.6 39.5-35 30.1-80.4 48.4-130.1 48.4zm162.7-84.1c-24.4-31.4-62.1-51.9-105.1-51.9-10.2 0-26 9.6-57.6 9.6-31.5 0-47.4-9.6-57.6-9.6-42.9 0-80.6 20.5-105.1 51.9C61.9 339.2 48 299.2 48 256c0-110.3 89.7-200 200-200s200 89.7 200 200c0 43.2-13.9 83.2-37.3 115.9z\"><\/path><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-author\">\n\t\t\t\t\t\t\t\t\t\tadmin\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-7014cca elementor-inline-item\" itemprop=\"datePublished\">\n\t\t\t\t\t\t<a href=\"https:\/\/dcl-actuator.com\/en_us\/2023\/06\/05\/\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-calendar\" viewbox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M12 192h424c6.6 0 12 5.4 12 12v260c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V204c0-6.6 5.4-12 12-12zm436-44v-36c0-26.5-21.5-48-48-48h-48V12c0-6.6-5.4-12-12-12h-40c-6.6 0-12 5.4-12 12v52H160V12c0-6.6-5.4-12-12-12h-40c-6.6 0-12 5.4-12 12v52H48C21.5 64 0 85.5 0 112v36c0 6.6 5.4 12 12 12h424c6.6 0 12-5.4 12-12z\"><\/path><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-date\">\n\t\t\t\t\t\t\t\t\t\t<time>June 5, 2023<\/time>\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-05722c0 elementor-widget elementor-widget-image\" data-id=\"05722c0\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"960\" height=\"299\" src=\"https:\/\/dcl-actuator.com\/wp-content\/uploads\/2023\/06\/voltage-signal-path.webp\" class=\"attachment-full size-full wp-image-5384\" alt=\"0~5V, 0~10V voltage signal coupling path | Voltage signal coupling path\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Fig. 1 Transmission path of voltage source signals<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f64e7bf elementor-widget elementor-widget-text-editor\" data-id=\"f64e7bf\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>As shown in Fig. 1, the transmission of the voltage source signal consists of 3 main parts:<\/strong><\/p><ol><li>Negative feedback type voltage signal output circuit.<\/li><li>Signal transmission cable. Among them, C1 and L1 are the parasitic capacitance and parasitic inductance of the cable, whose parameters are directly related to the cable length and wiring type.<\/li><li>Input signal acquisition circuit. Wherein, L2 and C2 are low-pass filtering circuits that may be arranged for some of the sampling circuits.<\/li><\/ol><p>For a negative feedback type voltage signal output circuit, the input signal is calculated as follows:<\/p><p>\u00a0 \u00a0 \u00a0 \u00a0 \u2223Xi\u2032\u2223=\u2223Xi\u2223-\u2223Xf\u2223<\/p><p>When the phase of \u2223Xf\u2223 overshoots or lags by 180\u00b0, the formula for the input signal takes the following form:<\/p><p>\u00a0 \u00a0 \u00a0 \u00a0 \u2223Xi\u2032\u2223=\u2223Xi\u2223+\u2223Xf\u2223<\/p><p>In other words, in the absence of an input signal (\u2223Xi\u2223 is 0), the feedback signal (\u2223Xf\u2223) maintains the output signal (|X0|), and the output signal (|X0|) in turn maintains the feedback signal (\u2223Xf\u2223). At this point, self-excited oscillation is formed.<\/p><p>In summary, the following 2 conditions are the prerequisites that lead to self-excited oscillations:<\/p><ol><li>|AF| &gt; 1<\/li><li>\u03c6A+\u03c6F=(2n+1)\u03a0<\/li><\/ol><p><strong>Where does the phase difference on the loop come from?<\/strong><\/p><p>Parasitic C1 and L1 on the signal transmission cable, L2 and C2 on the input signal acquisition circuit, and filter capacitance on the signal output circuit may cause phase differences in advance or lag. The final phase difference is the sum of these phase differences, and if it is 180\u00b0 over- or lagged, self-excited oscillation is possible.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0085879 elementor-widget elementor-widget-text-editor\" data-id=\"0085879\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>How can self-excited oscillations be avoided?<\/strong><\/p><p>We just need to make sure that the previous 2 conditions cannot be satisfied simultaneously in the range of the applied frequency domain to avoid self-excited oscillations.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-26b0ed9 elementor-widget elementor-widget-image\" data-id=\"26b0ed9\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"417\" height=\"415\" src=\"https:\/\/dcl-actuator.com\/wp-content\/uploads\/2023\/06\/self-excited-oscilation-factor.webp\" class=\"attachment-full size-full wp-image-5382\" alt=\"Conditions for negative feedback circuits not to oscillate\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Fig. 2 Condition of negative feedback loop without oscillation<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5973d4f elementor-widget elementor-widget-text-editor\" data-id=\"5973d4f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>As in Figure 2:<\/p><p>f c is the frequency at which the loop gain 20log|AF| drops to 0 dB.<\/p><p>f o is the frequency at which the loop phase difference is less than -180\u00b0.<\/p><p>Therefore, the circuit is stable when the phase difference overshoots or lags by 180\u00b0 and the gain of the loop drops below zero.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9348ff8 elementor-widget elementor-widget-text-editor\" data-id=\"9348ff8\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Why are current source signals relatively less prone to oscillation?<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-4f108dc elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4f108dc\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-c18ac4e\" data-id=\"c18ac4e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-7819e21 elementor-widget elementor-widget-image\" data-id=\"7819e21\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"600\" height=\"406\" src=\"https:\/\/dcl-actuator.com\/wp-content\/uploads\/2023\/06\/current-signal-feedback-path.webp\" class=\"attachment-full size-full wp-image-5381\" alt=\"Current Signal Output Circuit Feedback Loop | Current Signal feedback path\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Fig. 3 Current source feedback loop<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-a46cc41\" data-id=\"a46cc41\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2a32944 elementor-widget elementor-widget-image\" data-id=\"2a32944\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"586\" height=\"425\" src=\"https:\/\/dcl-actuator.com\/wp-content\/uploads\/2023\/06\/voltage-signal-feedback-path.webp\" class=\"attachment-full size-full wp-image-5386\" alt=\"Feedback loop for voltage signal output circuit | Voltage signal feekback path\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Fig. 4 Voltage source feedback loop<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-f733503 elementor-widget elementor-widget-text-editor\" data-id=\"f733503\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>As shown in Fig. 2, the output of the current source, which is widely used today, is a mirror current source. Its negative feedback regulation loop contains only one side of the mirror current source identified by the red line. Therefore, the external load circuit has little influence on the phase difference and gain of the feedback loop, and as long as the parameters of the internal feedback loop are controlled, no oscillation will occur.<\/p><p>As shown in Figure 3, the feedback point for the voltage source signal is located at the output point of the circuit. Therefore, the feedback loop contains the internal circuit marked by the red line and the external cable and sampling circuit. Thus, when the electrical parameters of the external cable or sampling cable change, the phase difference and gain of the negative feedback loop also change. When this change causes the 2 conditions for self-excited oscillation to be satisfied, oscillation occurs.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-36f721e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"36f721e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-25 elementor-inner-column elementor-element elementor-element-855bb4c\" data-id=\"855bb4c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0bcd777 elementor-align-left elementor-mobile-align-center elementor-widget elementor-widget-button\" data-id=\"0bcd777\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"\/en_us\/tech-enquiry\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Technical Consultation<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-25 elementor-inner-column elementor-element elementor-element-20d88f5\" data-id=\"20d88f5\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-df7c27e elementor-align-left elementor-mobile-align-center elementor-widget elementor-widget-button\" data-id=\"df7c27e\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"\/en_us\/where-to-buy\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Product Ordering<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-25 elementor-inner-column elementor-element elementor-element-e508c63\" data-id=\"e508c63\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-25 elementor-inner-column elementor-element elementor-element-71f0089\" data-id=\"71f0089\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-5a86a8f elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"5a86a8f\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-57a91d2 elementor-widget elementor-widget-text-editor\" data-id=\"57a91d2\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Related Technical Articles:<\/p><ul><li><a href=\"\/en_us\/tech\/actuator-immunity-4-20ma-vs-2-10v\/\">Electric actuator anti-interference performance competition (4-20mA VS 2-10V)<\/a><\/li><\/ul><p>Relevant technical standards<\/p><ul><li><a href=\"\/en_us\/tech\/gb-t-3369-1-2008-iec-60381-1-1982\/\">GB\/T 3369.1-2008\/IEC 60381-1:1982 Analog signals for process control systems - Part 1: DC current signals<\/a><\/li><li><a href=\"\/en_us\/tech\/gb-t-3369-2-2008-iec-60381-2-1978\/\">GB\/T 3369.2-2008\/IEC 60381-2:1978 Analog signals for process control systems - Part 2: DC voltage signals<\/a><\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c41a453 elementor-widget elementor-widget-text-editor\" data-id=\"c41a453\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"text-decoration: underline;\"><a href=\"#top\">Back to top<\/a><\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Service &amp; Support Why do voltage-based output signals oscillate under certain operating conditions? Fig. 1 Transmission path of voltage-source signals As shown in Fig. 1, the transmission path of voltage-source signals [...] ...<\/p>","protected":false},"author":1,"featured_media":6531,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_theme","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[8],"tags":[39,52,53,57,65,66],"class_list":["post-5380","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tech","tag-faq","tag-fast-move-actuator","tag-actuator","tag-general-actuator","tag-very-small-actuator-tag","tag-explosion-proof-actuator"],"acf":[],"_links":{"self":[{"href":"https:\/\/dcl-actuator.com\/en_us\/wp-json\/wp\/v2\/posts\/5380","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dcl-actuator.com\/en_us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dcl-actuator.com\/en_us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dcl-actuator.com\/en_us\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dcl-actuator.com\/en_us\/wp-json\/wp\/v2\/comments?post=5380"}],"version-history":[{"count":0,"href":"https:\/\/dcl-actuator.com\/en_us\/wp-json\/wp\/v2\/posts\/5380\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dcl-actuator.com\/en_us\/wp-json\/wp\/v2\/media\/6531"}],"wp:attachment":[{"href":"https:\/\/dcl-actuator.com\/en_us\/wp-json\/wp\/v2\/media?parent=5380"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dcl-actuator.com\/en_us\/wp-json\/wp\/v2\/categories?post=5380"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dcl-actuator.com\/en_us\/wp-json\/wp\/v2\/tags?post=5380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}