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Old 6th August 2010, 05:07 PM   #11
shaan is offline shaan  India
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Hi everybody, Superb designs.

Quote:
Originally Posted by Plammox View Post
PCBs are overrated!

Could we see the flip side as well, how you're dealing with grounding/power distribution?
Sure... The ground is fed through a single wire for all the chips. The guarding wire around the board is the ground.
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Old 6th August 2010, 05:08 PM   #12
shaan is offline shaan  India
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Quote:
Originally Posted by Frank Berry View Post
I built a little Preamp a couple of years ago. Unity gain with Level control, Balance, Bass, Treble.
Neat and beautiful!
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Old 6th August 2010, 05:23 PM   #13
shaan is offline shaan  India
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Quote:
Originally Posted by mymindinside View Post
Hi Shaan,
what are the yellow axial caps in post #1 (DoZ)?. i have seen similar looking caps at lamington rd in bombay and the vendor claimed that they were polycarbonate caps

cheers,
mymindinside
These are Metalized Polypropylene caps I bought from kolkata. I found them ideal for use in the signal path. They are called MPTA caps here.

Link-> SUNTRONIC INTERNATIONAL CO., LTD > Capacitors > metallized polypropylene film capacitor

Go to second table and click on MPTA and there you can find info about these caps.

They sound reeeeally good.
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Last edited by shaan; 6th August 2010 at 05:28 PM.
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Old 6th August 2010, 05:59 PM   #14
Elvee is offline Elvee  Belgium
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Default And now something completely different:

Another kind of stuff:
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File Type: jpg Rec2.JPG (289.5 KB, 473 views)
File Type: jpg DSCF0001.JPG (319.0 KB, 458 views)
File Type: jpg circloProto2.jpg (138.3 KB, 436 views)
File Type: jpg DSCF1015.JPG (761.5 KB, 281 views)
File Type: jpg DSCF1012.JPG (267.0 KB, 227 views)

Last edited by Elvee; 6th August 2010 at 06:07 PM. Reason: Wrong pics
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Old 6th August 2010, 06:08 PM   #15
shaan is offline shaan  India
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SUPERB MAN! The messier, the lovelier! What is the third one? Amp/preamp/psu?!? Lookin' at the diode by the heatsink I think it's a power amp...
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Old 6th August 2010, 06:11 PM   #16
Elvee is offline Elvee  Belgium
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Quote:
Originally Posted by shaan View Post
SUPERB MAN! The messier, the lovelier! What is the third one? Amp/preamp/psu?!? Lookin' at the diode by the heatsink I think it's a power amp...
It is a prototype of a circloMOS:
It's cheap, it's N, it's dirty, it's.... The CIRCLOMOS!!!
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Old 6th August 2010, 06:14 PM   #17
PMA is offline PMA  Europe
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JFET test board
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Old 6th August 2010, 07:03 PM   #18
shaan is offline shaan  India
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Default Gainclone

Unused. Sounded pretty decent though. Made only a single channel.
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Old 6th August 2010, 07:29 PM   #19
shaan is offline shaan  India
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Default Old

One of my early stereo class-ab designs.
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File Type: jpg old_ab_2.JPG (261.4 KB, 187 views)
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Old 6th August 2010, 07:31 PM   #20
shaan is offline shaan  India
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Default Compactest

I tried to make this amp as small as I could. I think it can be shrunk even further.
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File Type: jpg compact_ab_2.JPG (289.7 KB, 168 views)
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