Class D Amp Photo Gallery

[doctormord]

I don't see any earth connection?

 

[9827wAlEs]

My lovely UCD400

An externally hosted image should be here but it was not working when we last tested it.

 

[Kjeldsen]

looks like the same above!

 

[doctormord]

TPA3251D2 on a spring-damper-system.

 

[Globulator]

Blew up my Topping TP22 the other day so I ordered a couple of PBTL boards (TPA3116 2*100W D2 Dual Channel Digital Audio Amplifier Board 12V-24V for Arduino | eBay) and popped one in on top of the old board.

An externally hosted image should be here but it was not working when we last tested it.

TPA3116 x 2 PBTL in a Topping TP22

Managed to keep the use of the on/off and input selector etc so it will fit into the old topping box without any mechanics being required, which was a bit of a result.

So I thought I'd post the picture up.

 

[alarrr]

My Extreme amp I wonder why is everyone using those huge transformers, why not more modern switch mode?

 

[tauruswho]

Personal preference, I used the Modern way, works very well for me..
http://www.diyaudio.com/forums/class-d/87913-class-d-amp-photo-gallery-85.html#post3922555

Mark

 

[alarrr]

Its tda7498 cheapest **** ever. But works.
Ebay laptop bricks modified to give 34 volts and in parallel. That green wire is feedback loop shared.

 

[tfboy]

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

It looks like the UcDs are just supported by standoffs in the corners and not attached by the heatsink which is just floating. Don't they get rather warm? I've always mounted my UcDs to the chassis or built some heatsinks to help dissipate the heat they generate. Without, they get rather toasty!

 

[Loeitech]

2 channel SelfOscillator ClassD PowerAmplifier + SwitchingModePowerSupply

An externally hosted image should be here but it was not working when we last tested it.

 

[manxman]

That's about as neat as you can get.
If you like switching technology this must be the target.
This must be a commercial design, who makes it?

 

[JonasKarud]

I heard so much good of those tiny no name class d amps from Alibaba Express, so I decided to give them a try.

I'm totally blown away with the excellent sound produced by this 16 dollar gadget!

There's a clean attack in the low registers, a very smooth treble and the midrange is very detailed and pleasing to the ear.


I know that amps can be very hard to distinguish from each other, but, to my ears anyway, this one certainly sticks it's nose out.

 

[Antoine8082]

2 channel SelfOscillator ClassD PowerAmplifier + SwitchingModePowerSupply

An externally hosted image should be here but it was not working when we last tested it.

Link ?

 

[Loeitech]

Link ?

i'm not have link or website. this circuit my hobby. make for simple systems , line arrey speaker etc.

 

[amiak]

My first amplifier attempt. This is Rouslan Dimitrov's design based on ATtiny microcontroller. Being a programmer, I was curious about this project because you can write your own soft for this. (You can find some details here.)

 

[doctormord]

I like it.

 

[Bigun]

i'm not have link or website. this circuit my hobby. make for simple systems , line arrey speaker etc.

Wow! You designed and made this yourself as diy hobby?

 

[Loeitech]

Wow! You designed and made this yourself as diy hobby?

yes sir. i develop > designed PCB > part assembled > tested.
Now I design NewVersion...... dimension 80 * 180 mm.

An externally hosted image should be here but it was not working when we last tested it.

 

[andrewlebon]

Hi Kritsanna
greetings very nice pcb design
warm regards
Andrew

 

[29285]

Sorry to say that this pcb design is dangerous. Primary and secondary circuits are mingled on the board, basic insulation requirements are ignored. Better you never connect this with the mains.