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4hv.org :: Forums :: High Voltage
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Need ultra-reliable "indestructable" 555 ignition coil/flyback driver

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william L
Sat Oct 16 2010, 11:32AM
william L Registered Member #3093 Joined: Mon Aug 09 2010, 11:40PM
Location:
Posts: 68
GhostNull wrote ...

You'll need to remember a flyback diode across the relay coils or the kick back from the coil might do some damage.
Isn't it better to put a capacitor and low value resistor across the relay, not a diode?
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Conundrum
Sat Oct 16 2010, 12:04PM
Conundrum Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4061
MOVs can be salvaged from old SMPSs...

-A
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ubuntupokemoninc
Sun Oct 17 2010, 02:13PM
ubuntupokemoninc Banned on 1/22/2011 for repeated rule violations after multiple warnings.
Registered Member #3299 Joined: Sat Oct 09 2010, 08:11PM
Location: Bantown, USA
Posts: 220
Use a zvs, if your wondering how you can use that with an ignition coil, get a fly back core, wind your 10 center tapped windings on it then rap a secondary of 10 turns from there connect you ignition coil to that.

for just a flyback you could use Dr. kilovolts superflyback driver,

Link2

and a newer one here Link2

Boy this is a fun one to build! shades
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Matt Edwards
Sat Oct 23 2010, 04:28PM
Matt Edwards Registered Member #2838 Joined: Fri Apr 30 2010, 07:55PM
Location: tehachapi, CA
Posts: 333
You could always try this. Link2
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