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Delay lamp circuit using relay (7)

2016-08-14 23:08  
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Delay lamp circuit using relay (7)
As shown in the circuit, it uses a PTC thermistor as a control element, so that the circuit is very simple. SB1 and SB2 are lights button respectively installed in two different places. Both of them can operate E. K should adopt the JRX-13F type miniature electromagnetic relay ; PTC can use color TV degaussing resistor, such as MZ72-18 type.