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by **sparkgap** » Tue Jan 20, 2009 9:55 am

a PWM circuit should drive the coil as well. Like here:

http://www.rmcybernetics.com/shop/cyber ... ts.htm#A98

by **FarrahDay** » Tue Jan 20, 2009 10:00 am

Ok, Jehu

From Alaskas project folder we simply have a 555 timer circuit that can switch a high current output. Nothing of any great value information wise, which does beg the question, can it really be that simple?,

I have made these ccts in the past to drive car ignition coils. The circuit is really simple, but if using a MOSFET, you have top protect it against inductive back emf.

I'll be using the very old but sturdy 2N3053 as my high power switch.

Alaska doesn't seem to think that the frequency is important, so you can either choose the components to give your preferred frequency, or use a couple of variable resistors to give you a range of frequencies.

I'll locate and post the simple cct that I have used in the past and found to be very reliable.

by **FarrahDay** » Tue Jan 20, 2009 10:06 am

Jehu

this is a very simple cct, but it does work extremely well.

http://www.geocities.com/capecanaveral/ ... oildrv.htm

by **AlaskaStar** » Wed Jan 21, 2009 4:23 am

by **FarrahDay** » Wed Jan 21, 2009 5:24 am

by **resident_genius** » Sat Jan 24, 2009 11:26 am

by **Don** » Sun Jan 25, 2009 3:29 pm

Better yet....at least more fun....build a heater.

I've been toying with the idea of a system with an old style steam radiator but instead of coal, fire it with HHO.

That may not be practical for this winter but would be great for next year.

Sorry for being off topic. Just thought I'd through that out to the crowd with more means than I have at the moment.

by **alpha-dog** » Thu Jan 29, 2009 5:25 pm

by **haroldcr** » Fri Jan 30, 2009 10:23 pm

by **haroldcr** » Fri Jan 30, 2009 10:24 pm

by **kevinsatterfield** » Fri Jan 30, 2009 11:47 pm

by **kevinsatterfield** » Fri Jan 30, 2009 11:50 pm

by **saisunee** » Sat Jan 31, 2009 5:22 am

by **Jehu** » Sat Jan 31, 2009 5:44 am

by **kevinsatterfield** » Sat Jan 31, 2009 1:15 pm

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