• 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.

Plate choke on a line stage?

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anatech

anatech

Administrator
Joined 2004
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Poobah,
Bet you got quite a "bite" from high voltage now & again! (arrrgh, forgive me).

Joe, things were so tough here that I used to hold a pen while someone pulled the paper by as I grabbed the test point. That 'scope was a big step forward as only one person was needed to troubleshoot. Not counting the guy pedalling the generator. :clown:

It's a pretty cool item for sure. As I said, a 1" tube. Nor even a flat screen.

-Chris
 
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Burnedfingers

Member
Joined 2002
Quote:

Joe, things were so tough here that I used to hold a pen while someone pulled the paper by as I grabbed the test point. That 'scope was a big step forward as only one person was needed to troubleshoot. Not counting the guy pedalling the generator.


You actually had a guy to pedal the generator? I used to have to multitask.
 
Giaime

Giaime

Member
Joined 2004
giaimeugliano.tk/
Let's up this thread to let you know that...

the prototipe of my preamplifier is finished!!! Hurrà! :D

Now it has a phono section with an ECC83 and an ECC88, this last tube choiche is done to drive the volume pot with a lowish impedance. Then there's a volume pot, then there's a ECC88 CF with a 2-transistor CCS on the cathode. Very very very good sound.

Now I've got to make the definitive building...
 
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