I'm working with @jgrupczy on a project to simulate biigg guns firing. See here: http://forum.allaboutcircuits.com/threads/propane-oxygen-gun-simulator-schematic.118860/
One of the circuits is to fire a spark plug to ignite a gas oxygen mixture.
I have a circuit that I think works, but if someone has a better one or any input on this one, I would appreciate the input.
It's pretty simple: A pulse triggers a 555 which turns on a high voltage FET for about 4ms.. From what I have read about the coils the current should rise to about 7 amps in that time. When the field collapses the spark plug fires.
I used a TVS to protect the FET just in case.
So some questions:
Is 5 mh about right for the coil primary?
250H okay for the secondary?
4 ms and 7 amps okay?
Anything else you can think of?
One of the circuits is to fire a spark plug to ignite a gas oxygen mixture.
I have a circuit that I think works, but if someone has a better one or any input on this one, I would appreciate the input.
It's pretty simple: A pulse triggers a 555 which turns on a high voltage FET for about 4ms.. From what I have read about the coils the current should rise to about 7 amps in that time. When the field collapses the spark plug fires.
I used a TVS to protect the FET just in case.
So some questions:
Is 5 mh about right for the coil primary?
250H okay for the secondary?
4 ms and 7 amps okay?
Anything else you can think of?
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