Two ends delay switch circuit with the LM122

Published:2011/6/19 19:40:00 Author:TaoXi | Keyword: Two ends, delay, switch | From:SeekIC

The two ends delay switch circuit with the LM122 is as shown in the figure, the LM122 integrated timer can be used as the two ends delay switch component. When the LM122 integrated timer is in the conduction state, the voltage drop is 2 to 3V, the current can be 50mA. The circuit function is: if you add the power supply voltage and after the delay time of R1C1 seconds, the relay conducts. The disconnecting current of the timer is about 3 to 4mA.



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