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Re: [TCML] Frequency
I have a used Accel Super Coil I can let you have for about $10 plus
shipping, about $12 by Priority Mail. It looks a little bit rough but works
just fine. They are also frequently available on eBay for much less than
I will offer once more, if you will contact me off list, I will be more than
glad to help you and save you a whole lot of grief and money.
----- Original Message -----
From: Rhys Sage
Sent: Sunday, October 11, 2009 14:30
Subject: [TCML] Frequency
I did some research and found the circuit I'd found online is basically OK.
There are some things that need changing though.
One thing I'll do for simplicity is to make the pulse generator run off a 9v
battery and produce an optical pulse which a receiver will pick up to apply
the current to the coil. I did discover the ignition coils need a bridging
resistor and capacitor combination to reduce spikes that might damage the
power supply. Similarly a diode will be needed in series to prevent
I had to get a book on 555 circuits - I couldn't blindly trust the
information I'd found online.
The ignition coil I have is marked E70. The packet has a barcode of
841266025075. It was cheap and something I'll be using for testing. I will
need one of the $40 accel supercoils to get my 50KV ionisation pulse -
that's a different circuit however. I'll need a 25KV coil to charge the main
capacitor though and that's what the 555 circuit is all about.
I've been on hold for quite a while what with not being so sure about a
downloaded circuit diagram and because of all the add-ons and extra features
people say it needs. I'm avoiding most of those by optically isolating the
circuit. Thus, if anything blows, it won't be the control circuitry!
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