 Driving a flyback transformer with a SIDAC oscillator
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monokel
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Sun Oct 31 2010, 06:22PM
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Registered Member #2981
Joined: Thu Jul 08 2010, 01:47PM
Location: Germany
Posts: 35
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I got 200 cheap K2400E70 SIDACs from eBay (breakover voltage 220-250 V).
I just played a little bit with them. I have driven a flyback transformer with one of them.
The circuit is the same as for a SGTC except that the SG is replaced by the SIDAC and the prim/sec coil
is replaced by the flyback (and the voltage is lower). At first, I got about 5-7 mm spark length.
Later, I built the circuit again, and curiously, I only got only 2-3 mm spark length (see the picture).
Of course, driving flybacks is not really the reason why I bought these SIDACs. I want to build
a SIDAC / IGBT Spark gap TC with them.
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Dr. Dark Current
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Registered Member #152
Joined: Sun Feb 12 2006, 03:36PM
Location: Czech Rep.
Posts: 3384
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Works better if you use a dimmer switch with a series cap. I got some 3cm sparks from an AC flyback before sparks started jumping across the secondary winding.
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