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Old 11th February 2005, 02:06 PM   #481
MelB is online now MelB  Canada
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Morning rdf:

No..never thought of using chassie as part of the circuit. I always just run ground wires from everything to the input ground....as you can see in the pic. Although now that you mention it the chassie would probably save a lot of wire. I see from the pictures here a lot of ways to improve on my mess in my next project.
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Old 11th February 2005, 02:10 PM   #482
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Quote:
Originally posted by MelB
Morning rdf:

No..never thought of using chassie as part of the circuit. I always just run ground wires from everything to the input ground....as you can see in the pic. Although now that you mention it the chassie would probably save a lot of wire. I see from the pictures here a lot of ways to improve on my mess in my next project.
Actaully it would still be best to maintain a star ground implementation rather that use the chassis.

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Anthony
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Old 11th February 2005, 03:01 PM   #483
rdf is offline rdf  Canada
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Don't want to imply massive experience so YMMV but I used ground plane on an amplifier project originally designed for direct connection to crystal pickups. The input sensitivity is 0.1 volt. It's very, very quiet. In this case a PBC was used for the ground plane, I never did figure out how to attach wires to heavy copper. Too much heat required, the best idea I could come up with was machine screws through the copper sheet and nuts for a compression crimp. Then I woke up.

The next project looks like it's going to be an Aikido and no question the same technique will be used.
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Old 11th February 2005, 03:20 PM   #484
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ehe

the input/driver stage is designed by Curcio.
I made the PCB by myself with Circad (www.holophase.com).
Yes, the amp use negative feedback.
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Old 18th February 2005, 10:57 PM   #485
adalin is offline adalin  Sweden
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My new amp

Click the image to open in full size.

4x 6ch6 in a ppp design with 6c4 as phase splitters, still havent desided what the inputtube will be on the final amp, the schematic said 6br7 but Im not happy with that.
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Old 18th February 2005, 11:05 PM   #486
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Very nice - mitred woodwork that actually fits together properly
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Old 18th February 2005, 11:06 PM   #487
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Nice symmetry you got going there.

Anthony
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Old 19th February 2005, 08:39 AM   #488
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Very nice! 16 tubes!?!?
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Old 19th February 2005, 09:04 AM   #489
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Nice work, but have your children asbest gloves ?
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Old 19th February 2005, 10:05 AM   #490
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Nice work, but have your children asbest gloves ?

Upuppa... you are like a broken record...

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