I want to use a 555 timer to generate a ramp to my soft starter. The problem is, I want it to be continuous after reaching it's value. Unlike this shown below,
Instead of discharging I want it to remain on. How can I adjust this basic 555 ramp generator circuit to do this?
Best Answer
Disconnect pin 6 (threshold) from the output and pull it to ground with a resistor. You can still pull it to supply voltage to manually reset the output.
Note that the output will go to the full supply voltage instead of 2/3 of it as in the given circuit.