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Power amplifier 2x150W TDA7250

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gulson

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tda7250

This contruction is 100% working and has been tested by gulson. It's based on typical manual TDA7250 from SGS-Thomson. High ending transistors are 2xBDV65B and 2xBDV64B Darlington couple.
Features:
power supply: +/- 10V-45V
nominal psu: +/- 33V
impedance: 4ohms or more
Max. power: 2x150W for 4ohms or 1x300W
It has temperature protection with LM311, however in model conctruction not used

Amplifier 2x150W, DJVU style
Use DJVU Web Browser plugin!
http://www.elektroda.pl/download/pafiledb.php?action=file&id=192
 

leonqin

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tda7250 amplifier

gulson said:
This contruction is 100% working and has been tested by gulson. It's based on typical manual TDA7250 from SGS-Thomson. High ending transistors are 2xBDV65B and 2xBDV64B Darlington couple.
Features:
power supply: +/- 10V-45V
nominal psu: +/- 33V
impedance: 4ohms or more
Max. power: 2x150W for 4ohms or 1x300W
It has temperature protection with LM311, however in model conctruction not used

Amplifier 2x150W, DJVU style
Use DJVU Web Browser plugin!
http://www.elektroda.pl/download/pafiledb.php?action=file&id=192

How about TDA7294?
 

dingo

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tda7250 pdf

Gulson,
hmmm.... The SGS-Thomson TDA7250 is a chip, as you know:
http://us.st.com/stonline/books/pdf/docs/1472.pdf

I am interested in getting the picture of the NE 116 / 116A printed
circuit board (PCB) that should look more or less like most of the
files contained here:
http://home.eunet.cz/rysanek/tda7250p.zip
(from http://home.eunet.cz/rysanek/tda7250.pcb_en.html )

or near the bottom here:
http://www.wenfu.net/audio/tda7250.html

thus avoiding the use of a proto-board (or similar). The fact that
you have tested the circuit is very important. This has not
happened in the first case above and I do not know Chinese, so
I do not know anything about the second case.
 

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