PCBs for stereo bridged TDA7294 - diyAudio
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Old 18th April 2015, 03:22 PM   #1
diyAudio Member
 
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Join Date: Jun 2007
Location: Romania
Default PCBs for stereo bridged TDA7294

I made some PCBs with two TDA7294 in stereo or bridged mode. I posted some pictures below.

The selling price of these PCB is as follows (please note the price is for PCBs without electronic components):

If you buy 1 or 2 pcs., then price for one piece is 5 USD (without shipping).

If you buy 3... 10 pcs., then price for one piece is 4.5 USD (without shipping).

If you buy over 10 pcs., then price for one piece is 4 USD (without shipping).

If you buy a package that contains 30 pieces PCB, then its price is 120USD (included free shipping with the "Romanian Post" - is the same with FREE Economy Int'l Shipping - to the USA and European Union countries).

If you buy a package that contains 50 pieces PCB, then its price is 200USD (included free shipping with the "Romanian Post" - is the same with FREE Economy Int'l Shipping - to the USA and European Union countries).

I accept other shipping methods including DHL if you want it (but that means a higher cost of transport).

PCB Payment will be made in advance in pay-pal account (I will communicate it to you via private messaging of this forum).

After you will pay, I will send an e-mail (which you will have to communicate me) with a PDF file containing the circuit diagram and parts list required for assembling PCBs.

If you need further information, please ask in this topic.

Regards,
"donpetru"
Attached Images
File Type: jpg Cablaje 2 x TDA7294.JPG (808.5 KB, 147 views)
File Type: jpg 2 x TDA7294 ansamblat foto 1.JPG (618.0 KB, 142 views)
File Type: jpg 2 x TDA7294 ansamblat foto 2.JPG (641.4 KB, 142 views)
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Last edited by donpetru; 18th April 2015 at 03:35 PM.
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Old 18th April 2015, 03:42 PM   #2
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Interesting, but in what schematic it is based upon?

M.
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Old 18th April 2015, 03:51 PM   #3
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The schematic will be available after buying PCBs and the schematic does not differ very much like that of TDA7294 datasheet.
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Old 18th April 2015, 06:53 PM   #4
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OK.
Will have to look at the datasheet then as I always wanted an easy bridged amp project.

Good luck.
M.
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Old 18th April 2015, 07:13 PM   #5
irribeo is offline irribeo  Netherlands
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I get a bit distracted by the "Panasonics" but offer is just pcb, I understand.
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Old 19th April 2015, 05:34 AM   #6
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@maxlorenz,
Yes, you can consult the tda7294 datasheet but that is not enough, because the PCBs can configure "stereo" and "bridged" with the help of jumpers. These details are in the PDF file that will be sent after you buying PCB.

@irribeo,
please be more specific ??? Later edit 1: I understand, you mean the 470uF capacitors. Images of the components on the PCB are just informative. Remember, I only sell PCB without parts. Each user is free to use electronic components which wants.

Later edit 2: I have attached below a PSU schematic for one PCB:
Attached Images
File Type: jpg PSU TDA7294 stereo-brigded.jpg (60.4 KB, 110 views)
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Last edited by donpetru; 19th April 2015 at 06:00 AM.
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Old 19th April 2015, 02:45 PM   #7
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I guess the makers know better how to optimize the amps...
I want them for bridged amp.

I need 4 PCBs. Romanian Post is good.

Thanks.
M
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Old 19th April 2015, 08:02 PM   #8
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@maxlorenz,
With Romanian Post a package sent to Chile cost about ~15USD + 4 x 4.5 = this would mean a total approximately equal to 33 USD (for 4 pcs. PCB whit ship included).
If you agree with this total, send me your shipping address for me to calculate exact shipping cost.

By the way, I believe the Romanian Post is the same as Chile Post:
CorreosChile
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Old 23rd June 2015, 02:45 AM   #9
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Dear Donpetru,

Thank you very much for these PRO quality PCBs and for helping me devellop the "secret project". I hope it sounds as good as it looks.

Best wishes,
M.
Attached Images
File Type: jpg PCBs2.jpg (438.3 KB, 66 views)
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Old 18th July 2015, 07:01 PM   #10
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Dear Donpetru,

Parts start to arrive to build the bridged TDA7294 amp.

A question in relation to JP2 in bridged mode: if I connect int-Ro to ground, can I use a single ended source?

Thanks.
M.
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