DIY HiFi Mono Power Amplifier With TDA7294

[@user-mo4ul5td2p]

What IS the gain and max audio signal voltage ?

[@ALPHALabs02]

The gain depend on network feedback resistor. Max audio signal is input*gain.

[@cobar5342]

Nice work. Have you links to the gear?

[@ALPHALabs02]

I will share

[@FelixOwusu-m3q]

Please what is the minimum and maximum voltage required

[@ALPHALabs02]

you can check them in datasheet

[@manns4]

Hi. What is that board with big capacitors that you are installing between transformer and amplifier? What does it do, what's it called?

[@ALPHALabs02]

It is a power supply

[@manns4]

​@@ALPHALabs02​ ok so what kind, why is it needed if there's a transformer? Doesn't this board take AC/0/AC in?

[@ALPHALabs02]

@manns4 the power supply converts AC to DC. The AC voltage come from the transformer. The amplifiers need DC voltage to working.

[@manns4]

@@ALPHALabs02 OK so that means your amplifier cirquit board needs DC not AC. I have only seen dual AC TDA7294 amplifiers. Now I see your board has +VCC and -VCC. Sorry I didn't see it from my phone :D

[@simonlinser8286]

I have a complicated board that has 2 of these on it already, from a speaker. trying to reuse it. I wonder how difficult it might be. not sure how much power i need to supply. that little vise/ clamp you have is genius i need one!

[@ALPHALabs02]

Thank you

[@LadyGodaivagamhanan]

Where we can that board

[@ALPHALabs02]

I have no intention of commercializing these products at this time

[@luizgin527]

Good job man

[@ALPHALabs02]

Thank you

[@Andhony9]

Hi, can u share just the schematic of the PA and PSU? thank you so much

[@ALPHALabs02]

Send an email to me

[@МишаПерекопский-ы2о]

👍

[@ALPHALabs02]

Thank

[@christianalvarez7737]

Good job, could you share the PCB?

[@ALPHALabs02]

Send email to me, please

[@francescodileo8353]

Hi can i use the TDA7293 with these pcb?

[@ALPHALabs02]

I haven't tried with TDA7293 IC so I'm not sure. Thank you for giving me new ideas.

[@francescodileo8353]

With 7293

[@ALPHALabs02]

Yes. I am not sure.

[@arthureschner9319]

Nice & neat. Care to share schematic & pcb?

[@ALPHALabs02]

Thank you. I am going to upload schematic & pcb in tonight

[@ALPHALabs02]

I have uploaded the Gerber file. Hope it is helpful for you.

[@arthureschner9319]

@@ALPHALabs02 Thanks so much. Seems like the link isn't working though.

[@ALPHALabs02]

@@arthureschner9319 send me my email. I will reply with the Gerber file.

[@FelixOwusu-m3q]

Nice work, diagram please

[@ALPHALabs02]

No problem but it is same in datasheet.

[@enal0079]

link gerber file not working

[@ALPHALabs02]

Pls, send me an email. The link’s lifetime is short so it is easy to die.

[@ranjithpk3252]

Good, super,-sir

[@ALPHALabs02]

Thank you

[@przemysawpawlinski5536]

Loose that 7294 and do an ampli. with Lm3886 it's much better.

[@ALPHALabs02]

Yes. LM3886 is also good.

[@przemysawpawlinski5536]

@@ALPHALabs02 So, confront them 7294 and 3886. The same speakers the same room and the same source and then you will see... I mean you hear it.