Yes I earlier divided 10 volts by 15 amps to get 0.666 series resistance
divided by 2 (tubes)
1.5 ft 16 gauge nichrome coiled is a inexpensive option.
On 21/3/20 12:16 am, Jim Thomson wrote:
## would require a .333 ohm at 75+ watt resistor.
Jim VE7RF
-----Original Message----- From: Adrian
Sent: Thursday, March 19, 2020 3:17 PM
To: Jim Thomson ; amps@contesting.com
Subject: Re: [Amps] Henry 2K-4 Failure
Thanks Jim, you can't beat words from those experienced.
I guess a cathode test plug could be made to substitute one tube
plugging into
the socket .A dead tube could have its base made up for this, with
resistor added to
cathode connections equalling the hot value.
Then interchange tubes on the remaining socket to compare.
vk4tux
On 20/3/20 3:32 am, Jim Thomson wrote:
Grid to cathode short & ?stayed failed? means you just need an
ohmmeter. No need to swap tubes, etc.
Gerald, VE1DT
## Nope. The grid to cathode short only happens with tube
fil lit..... not when cold.
When cold, both a HI pot tester.... and also a megger wont
work either.
Jim VE7RF
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