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Registered Member #154
Joined: Sun Feb 12 2006, 04:28PM
Location: Westmidlands, UK
Posts: 260
Hi Colin,
I have no mains filter on my coil at present, but...food for thought.
For RF ground and just for low voltage testing, i'm using mains earth. since my last two coils are small DRSSTC's....i used mains ground, i also ground my electronics to the same earth. but this 12 x 4 inch secondary is the largest yet built by myself. so possibly a better earth is called for? I hope to moving into a house early next year, so.....a bigger coil is calling!!.......lol
Registered Member #154
Joined: Sun Feb 12 2006, 04:28PM
Location: Westmidlands, UK
Posts: 260
Arrgh!!...seems my peak current bar graph is not working,but the 'Set Current' part of the readout is working fine, i figure that the wire from the current feedback part has come adrift to the bar graph read out.My over current detection is working ok and at the moment is set for 200 amps (two LEDS on the bar graph) due to the configaration /burden resistors, my current feedback is 1 volt =100amp. With my intterupter set to 100us at 100 hz and 50% on my variac, i'm getting 21 inch arcs to a grounded rod before my over current kicks in. Dose this sound ok to you guys for this amount of power? Obviosly i will have to experiment on tuning.....but this is as as far as i have got so far.
Registered Member #154
Joined: Sun Feb 12 2006, 04:28PM
Location: Westmidlands, UK
Posts: 260
Due to heavy work load, i haven't had chance to mess around with this DRSSTC. Today however, i powered it up to 60% on the variac with an interrupter setting of 80HZ and 100uS, i then nervously hid by a wall and turned it on.....lol its sparks hit a grounded rod 30inches away a few times, i still have to experiment with tuning and set the over current to trip at a higher level. I'm hoping to get around 36 inch sparks eventually.
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DRSSTC
