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An amplifier can be used to adapt the range of a signal to a requirement, to make it more robust for transmission, or to satisfy interface requirements (like input/output impedance).

1 vote
2 answers
3k views

Replacing selenium rectifier diode with silicon 1N4007

I want to replace this selenium diode on an old tube amplifier with a silicon equivalent. Normally, this diode would have a lower value resistor in series with it such as a 15 ohm. …
Jon's user avatar
  • 105
1 vote
1 answer
120 views

Dropping the line voltage on an HH Scott 265A tube amplifier

The amplifier currently draws 2.5A from the wall at idle. It is a class A audio amplifier with 4 1614 (6L6GC) power tubes in push-pull parallel configuration. …
Jon's user avatar
  • 105