The 3-500zg tube with the graphite plate can handle 600ma ICAS ? The regular 3-500 rated 450ma CCS! ?With enough cooling (very important factor) you could run 2000 watts pep output SSB with a pair of tubes. ?Most vintage amps do not have the transformer capability of this anyhow except for the older Henry amps that can do this. ?
On Friday, January 31, 2025, 12:50 AM, Fran?ois via groups.io <18471@...> wrote:
> Attached, please find a great book about tubed amplifiers.
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Hello
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Thank you for this communication.
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Even if it does not answer my question, this document is very interesting, both at the technological and implementation level.
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I reformulate my initial questions:
·???????? What is the maximum anode current (reasonable) for a 3-500Z tube
·???????? What maximum current can be used in a Drake L 7 to bake the tubes (not in RF operation), compared to the transformer capacity for example.
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I measured some characteristics of the HV transformer (measured in short circuit)
·???????? Transformation ratio
o?? In CW: 2.95
o?? In SSB: 4.14
·???????? Resistance brought back to the secondary
o?? In CW: 13.4 ?
o?? In SSB: 18.6 ?
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De la part de HaL Mandel via groups.io
贰苍惫辞测é?: jeudi 30 janvier 2025 21:30
