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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: Grid resistors posted by Tre' on March 12, 2017 at 19:06:59:
is the choice of driver tube. The author claims that 6C4 was the best available driver tube at the time (1950). 6C4 was primarily designed as oscillator. It is similar to 6J5 or 6SN7, but with one important distinction: its plate-to-grid capacitance is 60% less. According to the article, this low Cpg, together with Miller neutralization, is important to keep ringing in phase inverting transformer above the audio range. 6C4 is used at 280 V, close to its rated Ua, and biased to its maximum plate dissipation of 3.5 W.
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- One more interesting thing - sser2 21:40:03 03/12/17 (0)
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