yash gupta
New Member
Hello friends!
I made a power audio amp, using the popular tda 2822 ic in streo config. For power supply I used a 12v .5A transformer, requlated by a 9v 1A regulator. The speakers are 6Ohm 10cm dia.
the filter cap is 1000uf.
I don't think that it is becoz of unstable power supply, as many desktop stereo speakers don't use a regulator and give fairly clean sound on the same ic.
I get a lot of mains hum and noise from the speakers, though the sound is loud enough.
Does it have something to do with the PCB design or the cabels or both. Currently I'm using PVC insulated unshielded single core wire for all the connections. the volume pots are not on the pcb, but connected via wires.
Please help me.
I made a power audio amp, using the popular tda 2822 ic in streo config. For power supply I used a 12v .5A transformer, requlated by a 9v 1A regulator. The speakers are 6Ohm 10cm dia.
the filter cap is 1000uf.
I don't think that it is becoz of unstable power supply, as many desktop stereo speakers don't use a regulator and give fairly clean sound on the same ic.
I get a lot of mains hum and noise from the speakers, though the sound is loud enough.
Does it have something to do with the PCB design or the cabels or both. Currently I'm using PVC insulated unshielded single core wire for all the connections. the volume pots are not on the pcb, but connected via wires.
Please help me.