tda7379 audio amp
Posted: Sat Feb 24, 2018 4:49 pm
I traded a shitty walmart surround sound stereo for 5 dell poweredge 1950 servers. So i really needed my music back.
I was given a broken and gutted Pyle Home(R) PTA4 120-Watt x 2 Mini Stereo Power Amp
I pulled the tda7379 amp chip out of it. Here is an example of a circuit from the datasheet.
My changes are in red. The input caps were changed to 4.7uf. The X's are things i didnt use. I think my power supply has that big cap in it... I'm powering it with a 9vdc 700ma wall wart. I'd like to upgrade that to a 12vdc 1amp but i'll have to wait.
I'm using the heat sink and the LED board from the pyle pta4. Superglue worked surprisingly well to mount these things. Everything else came from other dead devices. The volume pot, switch, and audio input jack. I'm driving two vintage emerson model system 24 speakers my sister hard when she was a kid. They are about 30 years old. Heh...
The LED board is powered right to the switch and the "triggers" directly to the speaker positive outputs.
I like how i ground to the heat sink itself! Chip runs cool.
Fun little project and everything came together super easy without much troubleshooting.
...
I was given a broken and gutted Pyle Home(R) PTA4 120-Watt x 2 Mini Stereo Power Amp
I pulled the tda7379 amp chip out of it. Here is an example of a circuit from the datasheet.
I'm using the heat sink and the LED board from the pyle pta4. Superglue worked surprisingly well to mount these things. Everything else came from other dead devices. The volume pot, switch, and audio input jack. I'm driving two vintage emerson model system 24 speakers my sister hard when she was a kid. They are about 30 years old. Heh...
The LED board is powered right to the switch and the "triggers" directly to the speaker positive outputs.
I like how i ground to the heat sink itself! Chip runs cool.
Fun little project and everything came together super easy without much troubleshooting.
...