Hello, with this PSU circuit, there occurs a swelling hum some minutes after power on.
It just swells to maximum hum and then immediately decongests right to zero hum.
The complete interruption is just three seconds long approx.
Any advise on what to change?
Does it happen because the voltage ramps up so slowly?
Maybe the 820K resistor needs a different value?
It just swells to maximum hum and then immediately decongests right to zero hum.
The complete interruption is just three seconds long approx.
Any advise on what to change?
Does it happen because the voltage ramps up so slowly?
Maybe the 820K resistor needs a different value?
