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Old Dec 09, 2012, 01:29 PM
gr8flyer55 is offline
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Even using their specified resistances the opto is sporadic in operation with the board. I will go back to the 4N35 I was using, the board functions fine with only the one glitch.
I'm not building any more ignition board circuits. Tired of all the wasted parts and time involved. If someone comes up with a better board that is both more efficient and more powerful, so be it. Use that board. I am not in this to be a competitor, just offered what I make. I have hundreds out there that are working fine with little or no RFI problems. The stronger the spark a board produces, the more chance for RFI. There is a cut off point for performance versus RFI problems. I don't care to argue this point anymore. If what you build is working, then use it.
I'm not trying to reinvent the wheel. My time is better spent making proven circuits that are trouble free.
We have a timer board and various HV board designs to choose from as evident by the posted schematics. I would rather see new ideas with off the shelf parts available than have someone condemn the work Rob and I have done in getting this ignition thread started. There are those who seem to forget, this information was all given for free to share a good thing with fellow modelers.

Just my 2 1/2 cents worth

John
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