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Precautions for detection switch
- Categories:product news
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- Time of issue:2022-12-08
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(Summary description)The voltage output type is mainly manufactured for the purpose of connecting electronic control equipment composed of transistors or ICs such as electronic counters and non-contact relays.
quality detector switch
quality detector switch
Precautions for detection switch
(Summary description)The voltage output type is mainly manufactured for the purpose of connecting electronic control equipment composed of transistors or ICs such as electronic counters and non-contact relays.
- Categories:product news
- Author:
- Origin:
- Time of issue:2022-12-08
- Views:0
When the output circuit detects, it outputs a voltage signal to the load. The voltage output type is mainly manufactured for the purpose of connecting electronic control equipment composed of transistors or ICs such as electronic counters and non-contact relays.
This type of proximity switch has 2 wires, so if you pay attention to the polarity when using it, not only can the use method be the same as the mechanical limit switch, but also the wiring is simple, but the following conditions should be paid attention to.
a. Even when the switch is in the off state, it is necessary to supply current to the detection circuit of the proximity switch. For this purpose, a small amount of current flows in the load. This current is called leakage current. When there is a leakage current, a voltage of "leakage current × load resistance value" is generated at both ends of the load. At this time, using a high-impedance load will cause poor recovery.
b. When the switch is turned on, voltage needs to be supplied to the detection circuit. At this time, if the switch is not fully turned on, a voltage drop of several volts will occur. This voltage is called residual voltage. For this reason, the power supply voltage needs to be the voltage value of "residual voltage + load operating voltage". The latest products generally have a leakage current below 1mA and a residual voltage of 3 to 5V.
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