Chip Amp Photo Gallery - Page 141

troystg · 16th April 2010, 03:05 PM

osscar-

That is actually pretty neat, certainly not safe, but neat.

It gives me some ideas for REALLY cheap builds for friends. I usually make and give away several chip amps but the cost of the enclosure is generally the limiting factor. This opens all sorts of possibilities.. And the recipients would probably think it's cool to "see" the parts. Of course I have to make it idiot proof. Even though they are making better idiots every year... :-)

osscar · 16th April 2010, 03:10 PM

Yes - its built- as a design element

I tried to create it safe-shrinking tubes everywhere + gourmets etc.

AndrewT · 16th April 2010, 03:22 PM

Post 1398.
What type of transformer is that?
The rounded corners seem quite unusual!

osscar · 16th April 2010, 03:28 PM

тпп 287-220-50К Old soviet transformer with primary 220V and six secondaries -
2x2,63V 2x5V 2x10 V - actual readings 2x16VAC in series.
90VA total.
There is also version where whole transformer was immersed in green paint .
This transformer is very quit - no buzz or hum like from cheap toroid.

Prophetmaster · 21st April 2010, 03:47 PM

Hi to ALL!
It is my new project of the 20W/4 Ohm or 10W/8 Ohm Class "A" amplifier on integrated microcircuits with 41 pieces BUF634T in each channel, included in parallel.
The amplifier works some months, but cases while is not present. Now the case is made at factory under my drawings. I wait for the termination of works.
Sounding was pleasant to all who came to me and listened

Photo of the amplifier I apply

.
Other files:
- Circuit of Amp
- Computer model of case
- Impulse signal 1 kHz
- Impulse signal 10 kHz
- Impulse signal 20 kHz
- Sin 5 Mhz

pacificblue · 22nd April 2010, 07:46 PM

Original idea. Should R108 not connect to the other side of R107?

okkyn · 23rd April 2010, 02:00 AM

What an art of engineering Prophetmaster! You even manage to put resistors between heatsink's fins

Prophetmaster · 23rd April 2010, 05:53 AM

Quote:

Originally Posted by pacificblue

Original idea. Should R108 not connect to the other side of R107?

Thanks!

Can be and so, but I consider that this R-C should be from outside a loudspeaker.

Prophetmaster · 23rd April 2010, 06:47 AM

Quote:

Originally Posted by okkyn

What an art of engineering Prophetmaster! You even manage to put resistors between heatsink's fins

Thanks for an appreciation.

Radiators are lifted over the circuit board on 5 mm and resistors are under cooling radiators

karabacak · 27th April 2010, 10:27 PM

JFet Buffered Gain Clone. This is my first GC.

16th April 2010, 03:05 PM	#1401
troystg diyAudio Member Join Date: Apr 2004 Location: Lousy Anna	osscar- That is actually pretty neat, certainly not safe, but neat. It gives me some ideas for REALLY cheap builds for friends. I usually make and give away several chip amps but the cost of the enclosure is generally the limiting factor. This opens all sorts of possibilities.. And the recipients would probably think it's cool to "see" the parts. Of course I have to make it idiot proof. Even though they are making better idiots every year... :-) __________________ Troy Thinking positive doesn't make things better, it makes you a better person.

16th April 2010, 03:10 PM	#1402
osscar diyAudio Member Join Date: May 2009 Location: Riga, LV	Yes - its built- as a design element I tried to create it safe-shrinking tubes everywhere + gourmets etc. __________________ If time is money then I'm out of time

16th April 2010, 03:28 PM	#1404
osscar diyAudio Member Join Date: May 2009 Location: Riga, LV	тпп 287-220-50К Old soviet transformer with primary 220V and six secondaries - 2x2,63V 2x5V 2x10 V - actual readings 2x16VAC in series. 90VA total. There is also version where whole transformer was immersed in green paint . This transformer is very quit - no buzz or hum like from cheap toroid. __________________ If time is money then I'm out of time

22nd April 2010, 07:46 PM	#1406
pacificblue diyAudio Member Join Date: May 2008	Original idea. Should R108 not connect to the other side of R107? __________________ If you've always done it like that, then it's probably wrong. (Henry Ford)

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16th April 2010, 03:22 PM	#1403
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Post 1398. What type of transformer is that? The rounded corners seem quite unusual!

23rd April 2010, 02:00 AM	#1407
okkyn diyAudio Member Join Date: Aug 2005 Location: Bukit Panjang	What an art of engineering Prophetmaster! You even manage to put resistors between heatsink's fins

27th April 2010, 10:27 PM	#1410
karabacak diyAudio Member Join Date: Nov 2008	JFet Buffered Gain Clone. This is my first GC.

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