- #1
Mike Phan
- 67
- 0
Hi,
My circuit is using NE555 timer to active a solenoid driver for some seconds. I have finally found out that any time we turn the power ON, the circuit is initially running. I have wondered that, when we turn the power ON, the power switch creates a signal as a voltage, so that can stimulate the NE555 trigger (pin #2) then run the solenoid driver.
Questions:
1. What kind of that signal?
2. How to solve that problem?
Thank you all.
Mike Phan
My circuit is using NE555 timer to active a solenoid driver for some seconds. I have finally found out that any time we turn the power ON, the circuit is initially running. I have wondered that, when we turn the power ON, the power switch creates a signal as a voltage, so that can stimulate the NE555 trigger (pin #2) then run the solenoid driver.
Questions:
1. What kind of that signal?
2. How to solve that problem?
Thank you all.
Mike Phan