Hello Mike,
just one thing to keep in mind: a transformer with a voltage ratio of about 430
(300/0.7) will also act as a 1 to 185000 impedance transformer. As a result the
slightest resistive load at the HV side (eg. a 1 Meg Ohm resistor across the HV
side) will probably do collapse the output voltage.
73, Rik ON7YD
________________________________________
Van: [email protected] [[email protected]]
namens Mike.WE0H [[email protected]]
Verzonden: maandag 31 mei 2010 17:02
Aan: [email protected]
Onderwerp: Re: LF: 8.97kc - TV transformer info needed
Hi Stefan,
How many turns should I wind for a primary side? 8 to 10 maybe?
I was using a 48.4 milli-henry primary winding with the secondary at
4.2 henry. There are many primary windings on this transformer but this
48.4 milli-henry winding gave me the highest output voltage on the
secondary. 300v p-p with only .7v p-p input.
Mike
WE0H
Stefan S wrote:
> Mike,
>
> Try to use just 65 % of the turns of your primary winding and i bet the
> optimum will be on 9 kHz! :-)
>
> 73, Stefan
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