• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Rectifier voltage drop question

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I am a little confused on how to calculate a Rectifier forward voltage drop. Or where to look it up.

I found this helpful chart attached. But I do see differing values in different places.

I want to model a PS with a 274B but there is no 274B available in the program. I can use a similar tube to make sure I have most parameters in line, but the final voltages will be different. I don't yet have enough built to plug in and compare, and anyway, I really need the full amp so I can see what it does under load. A calculation to see the ballpark would be nice.

Thanks!
 

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