On 3/24/13 3:51 PM, mddeming@xxxxxxx wrote:
Depending on the current capability of the transformer, you could fire at the 45 degree point with 4 bangs/cycle and have all 4 bangs exactly the same voltage. the first is as the transformer output is rising, the second falling, the third rising, etc.Hi Phil, Brandon, All, At 120 BPS (U.S.) the SR gap is firing at or near each voltage peak, + & - . At 240 BPS it is additionally presenting at or near each zero crossing, which wouldn't be a problem, but the cap has only half as much time to charge, which is why it may sound smoother. To get full charge, you now need a smaller cap, but then you need more primary inductance to keep F0 the same. It's all in the balance.
From a NST, the timing would be different, but as pointed out, you can fire at the voltage zero crossing (on the line) but it might be a voltage max on the cap.
One thing to be careful of with this sort o strategy is that if you miss a firing, you might overvoltage your caps (safety gaps are a must)
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