What would cause the filament not to get hot if there is continuity between the pins when 5 volts is applied? The tube has been sitting for seven or eight years. Bob Measure the filament current.
I have a working but leaking oil filled capacitor, HEC 21052 CC602 6UF 8Kv DC used in my Henry 8K Ultra (3 Phase 230V). The oil comes out at on the top of the canister under one of the HV connectors.
Hi Lou: Rob, it seems as though is not if but when the choke craps out in those Henry amps. Ive seen where many chokes shorted to the core and guys mounted the choke on insulated material instead
So what is the proper way to dispose of these bad tubes? Learn to make table lamps for flea markets? -- _______________________________________________ Amps mailing list Amps@contesting.com http:
Hi Warren NI5L: Hello all. I was referred to this list by Glenn, AE0Q, for an answer to my question about Alpha 99 exhaust temperatures. I am seeing about 155 to 160 degrees F when running RTTY wi
On 11/24/24 6:04 AM, flynth@gmail.com wrote: Why? Privacy online is important. Anonynymity should be the default. This is a public mailing list and I signed up with my non-identifying email address t
I have a friend in Thailand who recently zorched out L5 in his 77DX. Believe it or not, a small lizard got into the tank circuit and when he was tuning on 80 meters, L5 got extremely hot - to the poi
2uF seems awfully small. From the calculations I did (200hz, 200mH inductance) it seems there will ve 300V of ripple at max current of 1A (10%!). Isn't that too much and how could the military trans
But now the question becomes, how do I check how far from resonance am I (other than by measuring ripple)? I've obtained the capacitor they most likely used originally. And the choke is original too
On 1/7/25 3:28 AM, Lukasz wrote: I'm currently working on final touches of restoring an old military tube HF amplifier that has very useful mechanical memories. It's constructed in a way that there i
The trick is to make the input to the problem relays to require POWER to activate them. Feed a high current to those channels and drop the input resistor divider down to the hundreds of s. Ron