Re: [TCML] final word on inductance

[DC Cox <resonance@xxxxxxxxxxxx>]

Terry --- how is he monitoring the phase shifts in the sec coil?  Maybe I
missed it, but I don't see it on the schematic.

D.C. Cox




On Thu, Jun 25, 2009 at 8:57 PM, piranha <piranha@xxxxxxxxxx> wrote:

> DC Cox wrote:
>
>> ......
>>
>> The prediktor circuit operates way back on the primary side of the gate
>> drive transformer and does not monitor primary or secondary currents.  It
>> works fine without a load in static condition, but in the real world of
>> operating DRSSTCs it will not function as designed.  It monitors neither
>> the
>> tank circuit current values nor the sec circuit current values, all which
>> effect the zero cross over point.
>>
>> Dr. Resonance
>>
>>
>>
> No.  The Predikter is on the burden resistance of the main current
> transformer on the primary of the Tesla coil.  The CT is directly monitoring
> the Tesla coil's primary current.  It is a 50:1 CT so the say 500 amps of
> the primary coil is transformed to 10 amps which goes through a 0.5 ohm
> burden resistor in series with the Predikter's added inductor of about
> 500nH.  No gate drive transformers are involved with the Predikter.
>
> Terry
>
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