It is required for inductive loads, but not for resistive loads.
A ”spark suppression diode” (spark killer) is connected to suppress the back EMF (surge) generated when opening and closing an inductive load circuit.
ilgili Ürünler & Çözümler
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JUXTA VJ Series Signal Conditioners
Compact size, plug-in style and microprocessor based high performance capabilities (Multi-function types) makes the VJ Series Signal Conditioners an excellent choice for almost every application. Analog output, Hi-Low alarm relay outputs or RS-485 MODBUS communication is available as optional second output.