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-   -   Require advise on tda2050 this schematic (http://www.diyaudio.com/forums/chip-amps/150850-require-advise-tda2050-schematic.html)

pra3718 3rd September 2009 03:31 PM

Require advise on tda2050 this schematic
 
1 Attachment(s)
Which is the good schematic attached schematic or datasheet.

Dxvideo 4th September 2009 09:11 AM

I think you will need the following modifications to increase this amps sound performace;
- Ommit the 0.1u, 10K, 10K and 2.2u on NFB circuit..
- Increase the C2 value (47 or 100u-bipolar!) to increase the bass response..
- Add a 680R resistor after C1 in series, to protect amplifiers LTP base..
- Increase C1 value (4u7 MKP, not elko)
And a final word, if you dont have TDA2050 currently then use LM1875 instead of it..

pra3718 4th September 2009 12:53 PM

Thank you,

Infact the basic amp I can build now. I am looking for some best sound like WARM, CLEAR TONE, SONIC etc.,

Regards.

pra3718 4th September 2009 01:32 PM

@Dxvideo, I was trying to boost bass & treble without adding active/passive crossover.

Dxvideo 4th September 2009 01:42 PM

Then youre on the right way... So keep the feedback components anyway.
However my advices about bass improvement (about C1 and C2 values) are still valid..

shravanth 22nd March 2012 05:36 PM

what speakers can we use for tda2050

Osvaldo de Banfield 22nd March 2012 06:04 PM

Quote:

Originally Posted by Dxvideo (Post 1915550)
I think you will need the following modifications to increase this amps sound performace;
- Ommit the 0.1u, 10K, 10K and 2.2u on NFB circuit..
- Increase the C2 value (47 or 100u-bipolar!) to increase the bass response..
- Add a 680R resistor after C1 in series, to protect amplifiers LTP base..
- Increase C1 value (4u7 MKP, not elko)
And a final word, if you dont have TDA2050 currently then use LM1875 instead of it..

I make several amplifiers like this, but with TDA2006 split supply. I added a coil of about 50 microhenry in parallel with 4.7R between IC output and zobel network and speaker to prevent high frequency oscillation in case of long wires to speaker. The set is working fine since 1995 to this date.

shravanth 22nd March 2012 06:37 PM

what speakers can i use for tda2050
watts-
size-
impdence-
plz help me

Osvaldo de Banfield 22nd March 2012 06:46 PM

Quote:

Originally Posted by shravanth (Post 2956459)
what speakers can i use for tda2050
watts-
size-
impdence-
plz help me

Impedance= 4r or more
Power: depends on power supply (Psp > VCC *VCC / RL)
Size: depends on your personal taste.

Good luck.

kuldeepsingh 23rd March 2012 03:48 AM

TDA2050 is a decent powerful chip, it can easily drive 3-8 ohm speakers at 30 Watts average.


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