Re: Replacement for TDA2050v
@redwire
I've had it up and running for about a day now..... This circuit with the 1875T will simply not work without input filter caps, unlike the very similar circuit with the TDA2050V (which I had breadboarded and working fine without any filtration on the voltage source)... I also initially left out the feedback cap on the TDA2050V circuit initially, thinking that it was not mandatory, but the circuit would not work at all without it in place...
@budm
input voltage is 12.2V and the voltage at the point between the resistor ladder (R1 and R2) is 5.98V, so it's pretty much 1/2Vcc
I had some problems with it sounded distorted / muffled after a period of time, but I added a temporary heatsink to the IC, and a pot to limit the input and it's been running fine for the last five hours. I find that if I allow too much signal on the input, the output will distort badly... But I guess this is due to a higher gain in the 1875T circuit.... Gonna keep testing it with voice and music inputs for a few days...
@redwire
I've had it up and running for about a day now..... This circuit with the 1875T will simply not work without input filter caps, unlike the very similar circuit with the TDA2050V (which I had breadboarded and working fine without any filtration on the voltage source)... I also initially left out the feedback cap on the TDA2050V circuit initially, thinking that it was not mandatory, but the circuit would not work at all without it in place...
@budm
input voltage is 12.2V and the voltage at the point between the resistor ladder (R1 and R2) is 5.98V, so it's pretty much 1/2Vcc
I had some problems with it sounded distorted / muffled after a period of time, but I added a temporary heatsink to the IC, and a pot to limit the input and it's been running fine for the last five hours. I find that if I allow too much signal on the input, the output will distort badly... But I guess this is due to a higher gain in the 1875T circuit.... Gonna keep testing it with voice and music inputs for a few days...
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