Newbie: Required Amps for TDA7293

[FFury]

First Amp build. I have a TDA7293 mono board with 50V 2200uf caps.
It requires dual power Double AC 12-32V.

I am searching Ebay for the correct transformer.
I find multiple toroidal transformers at +32-0- -32. The price varies based upon amps.
Looking at this transformer rated at 0.8A

:::As 0532 50VA 32V Transformer | eBay

*** What minimum amps does this TDA7293 board require.???

 

[gabe75]

im not an expert , not even close, but i'll try to help.

to power an tda7293 amp u will need an 100va (at least) transformer for each channel. so, for a stereo amp u will need at least 200va transformer to properly power that amp.
And for the secondary voltage u need 2X25volts maximum, 2X20- 2X22v would be perfect.
I dont know where u are, if u are in US, i would buy from antekinc.com or if u like ebay, then antekinc on ebay is johnango and sells AS-2222 . thats what i think u need.

 

[fabrice63]

Hi, have a look there , you'll find all the infos you are looking at :


http://www.diyaudio.com/forums/chip-amps/206591-tda7294-power-transistors-amp-tda7293-come-also.html

http://www.diyaudio.com/forums/chip-amps/197398-tda7293-single-bridge-parallel.html


for me nothing less than 300va trafo ( R core is the best ) , supply caps 8200 uf 63 v / rail , 100 uf 63 v bootstrap cap , i run some of these nice chips , they sound pretty good if properly implemented ;-)


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