16-02-2018, 05:51 PM
The transistor has to be turned off to collapse the coil and give a spark. TBH, the circuit looks wrong, there must be more than a trigger winding or more circuitry.
Cheers.
Trevor
MM0KJJ. Member of, RSGB, GQRP, WACRAL, K&LARC.
Trevor
MM0KJJ. Member of, RSGB, GQRP, WACRAL, K&LARC.