Originally Posted by nicknunns
Was it used as a single-shot or with a varying duty cycle to control? 555s are pretty simple and most configurations are similar, just with different R/C values to change timing of pulses.
Can you give more info on the application?
I would want it to be a variable duty cycle from low as I can go to at least 80%, from there I can jumper the power supply directly to the unit I have in mind.
Please don't shoot me this is not a bier related project but as a variable pulsing unit used to flush forwards, backwards as well check the flow volumes and spray patterns for fuel injectors. I'm in the middle of a project changing from single spray nozzle to 4 hole injectors wanting not to only clean but make up a matched set of 8 that have a balanced flow volume of injectors. A smog test is needed next month. Question I have what is the minimum time in Ms a SSR can be switched at? I bet the 555 with go higher with the proper R/C added. I'm needing 1.5 to 2 Ms minimum in time to 80%, I can switch or jumper to 100% if not I must due with what's available. The flow volumes at the lower pulse width are what i'm after in balance as well the flows to 80% on pulse time and volume balance.
Thanks for the fast replies.