RE: Opensource CDI ignition
Hi Jon, another question. Changing the capacitor on the LV side fixed the voltage problems, it runs fine now at 380v DC. BUT.... I cannot get the thyristor to trigger the circuit. It works fine if you manually touch a wire to short the anode and cathode of the thyristor, but no matter waht volts I put to the gate I could not get it working. Could you tell me what voltage and current you give the thyristor gate please? I see fr the diagram you have a 470R resistor (R10) and C2 in the line from the PIC to the thyristor. I'm guessing the PIC puts out 5v and the resistor and capacitor are there to limit the volts and current passed to the thyristor gate?
What I'm trying to do it get the CDi part with fixed timing working for this weekend so I can go flying before I borrow a PIC programmer to do the PIC. I want to run the CDI circuit with a hall effect pickup as I already have a kettering circuit running on the engine off a hall sensor.
Thanks again in advance,
Rich