RCU Forums - View Single Post - New CDI - opensource project JMJ and Bigboat
Old 02-23-2010 | 02:22 AM
  #945  
kermet
 
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From: AK, NEW ZEALAND
Default RE: New CDI - opensource project JMJ and Bigboat

Speaking to a TV technician today says we should not be using a SCR for switching but a transistor, there are heaps of good transistors in old TV sets hi voltage and current

he said with a SCR the Gate has to be discontented and maybe even the Anode or cathode to stop a lock up, where as with a transistor it wont lock on the same,

Also i think what ever you put into the circuit is what you can get out , to a degree

my circuit draws 100-150 ma's ....... this is why i think i have a weak looking spark even below 10,000 rpm

Even the commercial units draw between 350 and 600 ma's ( http://www.ch-ignitions.com/faq.html )

An intense spark is performance as far as i am aware and a weak spark is what i already had with the flywheel and magnet setup

the motor can run fine with a weak spark But will run alot better with a full powerful spark or even twin plug setup as on my microlight.

http://www.youtube.com/watch?v=QpevOS0VQmk


Brett