Next amp...
This one seems to work fine. If i connect a 4Ohm resistive load to any output,
and give a sine wave in the amp, the signal looks fine, but at the same time, the amp starts drawing current. Its the same on both channels.
Without Signal, the amp draws only 0,9 Amp.
With Signal, bench supply limit at 6amps.
Never had this issue..
This one seems to work fine. If i connect a 4Ohm resistive load to any output,
and give a sine wave in the amp, the signal looks fine, but at the same time, the amp starts drawing current. Its the same on both channels.
Without Signal, the amp draws only 0,9 Amp.
With Signal, bench supply limit at 6amps.
Never had this issue..
Are you saying that if you drive a signal into a load and leave the signal at the same level that the amp draw continues to increase?
If so, if you immediately return the input to zero, does the current draw immediately drop back to what it was originally (with no input signal)?
If so, if you immediately return the input to zero, does the current draw immediately drop back to what it was originally (with no input signal)?
I think i found the problem. Its regulated ps with three banks and transformers. One bank is disorted.
As soon, the amp detect some load, the last bank will be added, but this one cause a short.
As soon, the amp detect some load, the last bank will be added, but this one cause a short.
Is audio clean at R151 and R251?
Do you have positive and negative rail voltage?
Do you have positive and negative regulated voltage on the power supply pins of the op-amps?
Do you have positive and negative rail voltage?
Do you have positive and negative regulated voltage on the power supply pins of the op-amps?