Post your Solid State pics here. - Page 205

digits · 04:10 AM

Quote:

Originally Posted by rfj5106

Soft start circuitry HAS to connect directly to the AC input (after the on-off switch) and then directly to the toroid transformer for it to work. Why would you need an isolation transformer? I usually use an AC light bulb after the on-off switch. Is that unsafe too? Please explain, I need the education.

the normal way AC is sensed should be on the secondary side of the transformer, before it reaches the bridge rectifier.

Pics below are of amp in progress (fully working), Mini aleph, Class A, +- 10W per channel, dissipation +- 40W per channel.

sakis · 25th October 2011, 05:25 PM

here is a construction of a headphone amplifier 5532 based .... actually its ultra quiet and plays very fine

enjoy the cute box and the neat vero board pcb

sakis · 25th October 2011, 05:26 PM

.

sakis · 25th October 2011, 05:32 PM

similar to the above i made also a small Riaa .... in both cases the trafo is housed in an outside wall pack ( we do have empty housings for trafos capable of 2x18v 10W )
that come very handy in situations like that .

some photo....

CECCO · 25th October 2011, 07:57 PM

LOL, The right name for this amp, could be " the Coffin Amplifier"
Chhers..

sakis · 26th October 2011, 07:12 AM

in a way yes !!!! ha ha ha but works !!

CECCO · 27th October 2011, 06:16 PM

Or..."the Halloween Amplifier" sounds better.

dimka · 31st October 2011, 05:05 AM

My QUAD-405 clone
PA300692.JPG
PA300694.JPG
PA300697.JPG

shahryar52 · 6th November 2011, 09:41 PM

This is an MP3 player embedded in the frame have an old receiver.
Amplifier to a stereo amplifier is 25 watt،I used the IC TDA2009A.
25 volt power supply is،It can be used to feed my old printer.

It's the opposite of the view

apexaudio · 7th November 2011, 06:31 AM

Quote:

Originally Posted by shahryar52

This is an MP3 player embedded in the frame have an old receiver.
Amplifier to a stereo amplifier is 25 watt،I used the IC TDA2009A.
25 volt power supply is،It can be used to feed my old printer.

It's the opposite of the view

Very interesting, can you share more detail?

26th October 2011, 07:12 AM	#2046
sakis diyAudio Member Join Date: Jan 2006 Location: nea makri athens greece	in a way yes !!!! ha ha ha but works !! __________________ SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr

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25th October 2011, 07:57 PM	#2045
CECCO diyAudio Member Join Date: Aug 2007	LOL, The right name for this amp, could be " the Coffin Amplifier" Chhers..

27th October 2011, 06:16 PM	#2047
CECCO diyAudio Member Join Date: Aug 2007	Or..."the Halloween Amplifier" sounds better.

31st October 2011, 05:05 AM	#2048
dimka diyAudio Member Join Date: Oct 2011	My QUAD-405 clone PA300692.JPG PA300694.JPG PA300697.JPG

6th November 2011, 09:41 PM	#2049
shahryar52 diyAudio Member Join Date: Jun 2011	This is an MP3 player embedded in the frame have an old receiver. Amplifier to a stereo amplifier is 25 watt،I used the IC TDA2009A. 25 volt power supply is،It can be used to feed my old printer. It's the opposite of the view