G
george-b
- Jan 1, 1970
- 0
can anyone send a circuit diagram for self build power amps using
valves.Thankyou George Black.
valves.Thankyou George Black.
george-b said:can anyone send a circuit diagram for self build power amps using
valves.Thankyou George Black.
push pull using an output transformer?george-b said:can anyone send a circuit diagram for self build power amps using
valves.Thankyou George Black.
How about a transformerless output?george-b said:can anyone send a circuit diagram for self build power amps using
valves.Thankyou George Black.
Robert Baer said:How about a transformerless output?
How about a transformerless output?
What i meant was no capacitor coupling to the speaker, and use of aJoerg said:Hello Robert,
Is "valve" rightpondian for "tube"? (hold the tomatoes...)
We did one when I was a kid and had less respect for what 900VDC could
do. Rewound a speaker coil on one of those monster speakers and that was
no fun at all. Then we placed large labels onto the wires, warning
everyone to never ever mess with these. The first twang on that E-guitar
was phenomenal. We thought the rafters would come crashing down.
Oh, and since a transformer was way over budget we opted for a
"transformerless power supply". Three cascades from 230V and huge
capacitors so we had enough oomph. In fact so much oomph that we could
trip a 230V/16A circuit breaker.
Regards, Joerg
Joerg said:Hello Robert,
Is "valve" rightpondian for "tube"? (hold the tomatoes...)
The word 'tube' is used in the UK to mean a CRT, the picture tube of a
TV or a computer monitor. 'Valve' is a thermionic device for
rectification or amplification (remember when they didn't used to be
tubular?).
Joerg said:Hello Adrian,
I remember that from my days in Scotland. Turn on the tube or "telee".
After that, hoover the carpet. Then off to pub (pronounced something
like "poub") for a few pints of McEwan's Heavy. Ah, the good times.
My first tube looked the shape of a Russion Babuschka. The others were
actually all tubular, including the steel ones.
Regards, Joerg
Try the book by the late John Linsley-Hood:
http://www.amazon.com/exec/obidos/t.../103-1171476-7699058?v=glance&s=books&n=50784