[QUOTE=iankoglin;201316]
Originally posted by prochiro
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Ian,
My circuit works fine...now you wrote:
Question One
When the 555 circuit is Oscillating and the input is 12v is not the output to the Gate bus expected to be 12v the same as the input 12v but switching at the pulse rate of the duty cycle?
When the 555 circuit is Oscillating and the input is 12v is not the output to the Gate bus expected to be 12v the same as the input 12v but switching at the pulse rate of the duty cycle?
It seems you have a Supply fault there...when you hook up coil it drops down...Your Coil will require -at least- 24 to 36 Volts...
Your Gates DO NOT need the whole 12 Volts to trigger...2 to 3 V is more than enough (like Dana said)...so there is a problem there...your oscillator is not sending right signal to FET's Gate...
Now you mention you turn the pot to regulate Input?...from voltage regulator ?...my circuit regulator (LM317) do not have a "pot"?...You are using an external one I guess..so, is that regulator output also hook to
Negative Source and Positive to Coil?
Could you please draw (hand draw is ok)..your whole set, including V Regulator, Coil, and the "part" of my circuit you are doing...pictures do not work...so, go over the whole thing...write it down...let's give it another try...
Regards
Ufopolitics
asking are 
that the reason of 2 motors is using the coils from one motor to drive the other like he explained here
...and have no time to go over with you...
and this showed to be about right when I measured with the Scope
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