Re: Big Triode,little knowledge

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "James T by way of Terry Fritz <twftesla-at-uswest-dot-net>" <jamest2000-at-att-dot-net>

Hi Jeff,
 Your way ahead of me. Tell you the truth I'm a little afraid of powering
up this thing until I
can check out the parts. I was hoping to check out just the Triode. If it
doesn't work the
project is on semi permanent hold. Can't afford a new tube just now.
 I was definetly going to ask about using a different signal source.
Possibly a simple signal
generator to about 300Khz. I know the tuning of the power amp would be
changed dramaticaly, I
probably couldn't recalculate the correct values to use. It would be great
to drive the base of a
secondary directly.
 I could at least use the HV supply, and stuff to build a more conventional
VTTC if the big
triode actually works.
 The panel meters read out in watts. If it is working I should be able to
determine output from
them. Right? Or does there have to be a load? This would tell me if the
tube works wouldn't it?
 If the 20 watt amp would work at low frequencys it may be of use as well?
Thanks,
 James T



Tesla list wrote:

> Original poster: "cougercat by way of Terry Fritz <twftesla-at-uswest-dot-net>"
<felix1063-at-home-dot-com>
>
> Hi James,
>
> The best way would probably be to connect a thru line watt meter good for
> 3500 watts to the output connector and  then connect a 50 ohm dummy load to
> the watt meter.  Turn the puppy on without the signal generator signal.  You
> should have a 0 reading on the watt meter.  Then hook up the fixed frequency
> signal generator and you should see the output go up....to a max. of 3000
> watts.
>
> Depending on how much "drive" you are applying via the "fixed signal source"
> will determine how much power you have on the output.
>
> You might also want to determine the frequency of your signal source by
> using a frequency counter by using a calibrated scope.
>
> Multiply the horizontal sweep time (usually in microseconds) by the number
> of centimeters on the screen and divide into 1 to get the frequency.
>
> Using a frequency counter would be easier though.
>
> The minimum frequency of operation for your amp is 2 MHZ which is rather
> high for TC's.
>
> Good luck
>
> --jeff
>