Electronics > Projects, Designs, and Technical Stuff
Power Pack repair attempt but cant discover parts
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Florek:
the biggest problem is that my impulser/trigger coil have 3 wire, white blue green, for me it looks like these engine deploy spark on specific cylinder, not like "wasted spark system" where on 2 cylinder engine cdi deploy spark on the same time on both cylinder , so one spark is wasted since piston is on the opposite side, so do you think that i have any chance to use some cheap chinnese cdi from scooter or atv and make it work on 2 cylinder even if cdi was desing to run on one cylinder scooters?
orbanp:
It is possible that your ignition looks like the 3-cylinder Johnson CDI unit in the schematics, except yours has only two channels.

Peter
Florek:
so making new cdi like on this diagram should work right?
can someone tell me what is this V310 below HV coil and what scr to use?
orbanp:
Why do you want to build a new CDI?
Though it sure would be fun!

Now would be the time to trace out the schematics of that failed power pack and see how close it is to those schematics!
And possibly fix it!

That V130 is a varisor and with the triac it most probably limits the voltage from that feed coil as the RPM increases.
Could not find a data sheet on it, neither on the triac.
Probably best would be to use simulations to find suitable replacements.

Regards, Peter
Florek:
What capacity should have capacitor? It says 68 but what uf nf? On mine capacitor from cdi it says u68 and 400v but when i measure it it shows 0.61uf this is normal?
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