You will indeed need two controls, but the usual arrangement is one for frequency - the inverse of the length of one on-off cycle - and one for pulse width or on-time percentage, with 50% being equal on and off times. This is all you need to specify the same thing you just described.The time space between the sparks (the on time must be able to be varied from 1 millisec to 500 millisecs). Similarly, the off time must also be able to be varied. So I assume that the circuit will have two knobs, one to control the ON time and the other to control the off time.
by Aaron Carman
by Jake Hertz
by Jake Hertz
by Jake Hertz