diyAudio - TDA7386 Problem

diyAudio (http://www.diyaudio.com/forums/)

- Chip Amps (http://www.diyaudio.com/forums/chip-amps/)

- - TDA7386 Problem (http://www.diyaudio.com/forums/chip-amps/142300-tda7386-problem.html)

jorge_rc

14th April 2009 08:24 PM

TDA7386 Problem

2 Attachment(s)

I try to build the circuit using the TDA7386. I tought I had recriated the schematic provided on datasheet, but ir didnt work...

I let the for you to can help me.

Please Help me

mjf	14th April 2009 08:51 PM

hello.
i think you have reverted tab and svr - tab goes to ground and svr needs the elcap..................
greetings.....

pacificblue

14th April 2009 08:54 PM

At first glance it seems that the 47 µF capacitor is at the wrong pin. It should be connected to pin 10, but you connected it to pin 25.

jorge_rc

14th April 2009 09:02 PM

Quote:

Originally posted by mjf
hello.
i think you have reverted tab and svr - tab goes to ground and svr needs the elcap..................
greetings.....

Thanks.. but is that enough to make the circuit not to work???

Thanks again

pacificblue

15th April 2009 06:32 AM

Yes, because the SVR pin controls the on/off delay. It is charged through the TDA, and the amplifier turns on, when the capacitor is charged to a certain voltage. If you force that pin to ground, the amplifier will remain off.

jorge_rc

15th April 2009 06:39 AM

OK. Thanks a lot....

And what about mute and stby?

thanks

pacificblue

15th April 2009 06:32 PM

Mute and Standby should turn on after the amplifier. The datasheet application you are using is surely designed accordingly.

All times are GMT. The time now is 01:24 PM.