On Tuesday, October 14, 2003, at 10:55 AM, Dennis12Amplify@aol.com
wrote:
Joe, Skip, Rich, ET. al....,
Please 'critique' the following and see if I am wrong in any of my
statements.
> ... ... ...
PS. I also do not understand the need for the diode bridge across
the
meter if there is always a DC voltage applied to the D. U. T. from
the tester,
but I'm sure there is some reason for it that is probably way beyond my
ability to understand.
*** a FWB feeding a DC meter assures that either applied polarity
will flow in the correct direction through the meter.
-------------------------------The Original
Email-----------------------------
Hello Jeff, Rich, Skipp Et. al
I have had some experience in this....
After buying a few different russian tubes....(GU-43B, GS-35B, GU-84B,
GI-6B/7B).
I've made some tests:
Another GS-35B had 3kv as upper limit, but after cooking it, a 8 kv
limit was
reached before a leakage 50 microamps occured!
One of the GU-43's had a 2200 volt limit, but after letting it cook
for a
while,
it can 'take' 6 kv before leaking.
A copule of GI7Bs had about 1500 v, but after ritual, I think at end,
I had
approx 3900 volts on both...
The gadget for these measurements was a K8CU High voltage breakdown
tester.
http://www.realhamradio.com/High_Voltage_Breakdown_Tester.htm
-Clipped here again-----
Regards
/Joe
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
Rich Measures, AG6K, 805.386.3734. www.somis.org/
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|