Delay switch 12v module with power led indication

Delay switch 12v module with power led indication

1. Turn on the power relay and delay the pull-in. Specifically: after the relay is supplied with 12v power, the relay will not immediately sink. The state of the relay output is: normally open and open, normally closed and common conduction; wait until the delay is 1-10s (can be adjusted), the relay Suction and at this time, the state of the relay output is: normally open and common conduction, normally closed and public disconnect; as long as the module is continuously powered, this state will be maintained.
2, the delay time is adjustable, (0 ~ 10 seconds)
4, increase the potentiometer can increase the delay time
5, increase the capacitance C1 can increase the delay time
6, with input power indicator
7, with relay pull-in indicator

8, can control the exchange 220V/10A equipment. (Maximum control device 2000W)

9, with relay freewheeling protection.

10. Delay time formula: T=1.1RC. For example: Capacitance 100uf resistance 100K T = 1.1 * 100000 * 0.0001 = 11 seconds