Re: RE: [TCML] DRSSTC weird waveform behavior

[Tuomas Koivurova <tkoivuro@xxxxxxxxx>]

For some reason i didnt have much luck with just variable resistor.
You can get very good adjustable inductors from coilcraft ( model SLOT
TEN-5-09 ). These inductors have both heavy magnetic and electrostatic
shielding which is really nice thing in violent environment like tesla
coil driver :)





2011/7/3 Michael Twieg <mdt24@xxxxxxxx>:
> Right, you don't need the pot if you have a variable inductor, but it's much
> easier to find a pot than a variable inductor.
>
> On Sun, Jul 3, 2011 at 2:06 AM, Finn Hammer <f-h@xxxx> wrote:
>
>> You don´t need a pot in parallel with the phase lead inductor.
>>
>> What you _do_ need is a means to independently delay both rising and
>> falling edge of the resulting waveform from the PL inductor. Take a look
>> at the Predikter schematic, the original source of a solution to this
>> kind of problem.
>> It is well documented in the Thumper thread over at 4hv.org
>> http://4hv.org/e107_plugins/forum/forum_viewtopic.php?68820.post [
>> http://4hv.org/e107_plugins/forum/forum_viewtopic.php?68820.post]
>> Cheers, Finn Hammer
>>
>>
>> ----- Original meddelelse -----
>>
>> > Fra: Justin B <boshjack@xxxxxxxxxxx>
>> > Til: TCML <tesla@xxxxxxxxxx>
>> > Dato: Lør, 02. jul 2011 22:49
>> > Emne: RE: [TCML] DRSSTC weird waveform behavior
>> >
>> >
>> > Just giving an update to progress.
>> >
>> > currently, I have an inductor and resistor (1ohm - 100K) in parallel
>> > with my CT. Turning the potentiometer, does nothing at all. However,
>> > the inductor has helped. If any one can give feedback as to what im
>> > doing wrong with this POT, please let me know. because it does
>> > NOTHING. The pot is in working condition.
>> >
>> > Here's what my waveform use to be like. As many of you told me, It's
>> > delaying.
>> > http://i.imgur.com/F8NVk.jpg
>> >
>> > Heres what it looks like with the inductor in parallel, and the
>> > worthless pot.
>> > http://i.imgur.com/1EKVL.jpg
>> > http://i.imgur.com/tuJRM.jpg
>> >
>> > Still experiencing Down-slopes in the voltage, likely due to a crappy
>> > isolation transformer for testing. Still working on the squiggles for
>> > the DC voltage, and I still need to get rid of the spikes. But hey,
>> > I'm happy that I FINALLY moved the phase. It obviously isn't dead
>> > centered, but its a lot closer than what I began with!
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