NE555 delay module monostable switch relay delay on-off switch (12V) automotive electrical delay

brief description]

1. size: 6.8CM * 2.1CM

2. main chip: NE555

3. working voltage: DC 12V

4. features:

1,

When the power is turned on, the relay is delayed (this module only has the function of delayed suction and does not have the function of delayed disconnection unless the power is cut off). Specifically, after power-on, the relay will not suck immediately. At this time, the state of the relay output is: normally open and publicly disconnected, normally closed and publicly conductive; After a delay of 1-10s (delay adjustable), the relay sucks. At this time, the state of the relay output is: normally open and publicly conductive, normally closed and publicly disconnected; As long as the module is continuously energized, this state (relay suction and state) will be maintained. Test phenomenon: after power-on, the red power indicator light will light up. after a delay of 1-10s, the relay will suck and a "click" 1 will be heard, and the blue relay suction and indicator light will light up.

2. Adjustable delay time (0~10 seconds)

4, increase the potentiometer can increase the delay time

5. Increasing the capacitor C1 can increase the delay time

6. With input power indicator

7. With relay pull-in indicator light

8, can control AC 220V/10A equipment. (Control equipment 2000W)

9. With relay freewheeling protection.

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