Hi guys, i'm new to the forum.
I have some problem to Connect this device with one single battery. I think the problem is on the connection of the max4466 electret. It has a common ground and it make me impossible the connection with the pam 8403 that have separate ground. Audio- and battery -. How can i Connect it properly? Maybe a diode? i attached an image. when i use these chips with two different batteries it works very well. Please help me
I have some problem to Connect this device with one single battery. I think the problem is on the connection of the max4466 electret. It has a common ground and it make me impossible the connection with the pam 8403 that have separate ground. Audio- and battery -. How can i Connect it properly? Maybe a diode? i attached an image. when i use these chips with two different batteries it works very well. Please help me
Attachments
I thought this looked familiar.
http://www.diyaudio.com/forums/chip-amps/288690-pam8403-how-isolate-gndin-gnd.html
Unfortunately paldep never came back with any more info as to whether what was suggested had helped.
http://www.diyaudio.com/forums/chip-amps/288690-pam8403-how-isolate-gndin-gnd.html
Unfortunately paldep never came back with any more info as to whether what was suggested had helped.
Sorry guys. Unfortunately it seems that gndin and gnd of the pan8403 are not equipotential. The electret has 3 pin vcc out and gnd.. The pam 8403 has leftin gndin rightin and + -. If i Connect gndin and -, pam8403 stop to work. If i Connect the electret amplifier i have to Connect gndin - and gnd of electret. And it doesnt work Like that.
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