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Re: [TCML] DC base driven coil
In a message dated 3/12/08 4:56:05 P.M. Eastern Standard Time,
>If I remember correctly, the base of the secondary connected directly to
the HV-side of the DC-
>charged cap. There was not a separate isolation cap. The capacitance of
the cap was so large
>relative to Fo that it had no impact on the tuning of the coil. AC-wise,
the cap looked like a short
In that case, we're talking about at least a coupla uF? And all the base
current of the secondary flowed through this cap to ground?
What ratings would a cap like this have to have? Ten of the CDE .15/2kV
942 series in parallel would handle the current, give you 1.5uF, and would
obviously be suitable for the frequency. But what voltages would they see?
Since the streamer grows with each bang, how does the DC cap "know when"
to discharge? Does its charging supply add to streamer growth?
Center for the Advanced Study of Ballistic Improbabilities
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