Re: help with a ss tc

["Steve" <Steve-at-g8cyerichmond.freeserve.co.uk> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Kevin
I'll take your questions in order. I have built about a dozen TCs using
flybacks as the HV source.
1 Yes, rectify the output, either use HV rectifier sticks from a tv/monitor,
they'll handle the current easily, or use a string of lower voltage diodes
(e.g. 1N4007) I use 15 on a 10kV flyback circuit. Don't use equalising
resistors, despite what you may see in books etc, modern rectifiers don't
need them, in fact because of the failure mode of modern diodes, and the
fact that your resistors are more likely to fail than the diodes, they are
more likely to be a problem than a solution.
2 For a couple of reasons I would avoid this route. The most important is
that it is not efficient, you want as much of the inductance of your primary
sircuit as possible to be in the primary coil itself.
3. The secondaries of flybacks don't need current limiting, but make sure
you fuse the supply to the primary, otherwise you may blow the 2N3055s if
you short the secondary ouput to ground.
----- Original Message -----
From: Tesla list <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, August 25, 2000 5:31 AM
Subject: help with a ss tc


> Original poster: "Kevin D" <teslacoilfreak1-at-mediaone-dot-net>
>
> Hi,
> I am planning to build a solid state TC using a tube type flyback
> and two 2N3055 transistors and a few resistors...I guess the circuit
> uses  feedback to automatically find the resonant freq. Of the flyback.
> Anyway I was wondering,does  the output of the flyback has to be rectified
> before connecting it to the tank circuit?
>
> Also,fair radio sales carries motorized roller inductors that use #8 wire
> and
> I was wondering,could it be used to remotely tune the pri. While the power
> is on?
>
> And lastly,does the flyback's secondary need to be current limited?
>
> Thanks for any help,
> Kevin D.
>
>
>
>