Hey folks, at the moment I'm experimenting with some ideas for a compressor based on diode bridge topology. It works fine on breadboard but there's one thing I don't quite understand. Maybe someone here can shed some light on this...
In front of the interstage transformer (OEP A262A3E in my case) there are two DC blocking caps as seen on the schematic extract from a Neve 33609 (C1 and C2). At least I believe that's what they are: DC blocking caps, right? I measured around 5 VDC on the positive lead - as expected. But the negative side (pointing to the transformer) still has about 3 VDC on both caps, where there should be almost nothing. Simulating this part of the schematic in LTSpice shows a few millivolts behind the caps - again, as expected. I also tried different caps but they seem to be fine as it's always the same.
Why is that?
In front of the interstage transformer (OEP A262A3E in my case) there are two DC blocking caps as seen on the schematic extract from a Neve 33609 (C1 and C2). At least I believe that's what they are: DC blocking caps, right? I measured around 5 VDC on the positive lead - as expected. But the negative side (pointing to the transformer) still has about 3 VDC on both caps, where there should be almost nothing. Simulating this part of the schematic in LTSpice shows a few millivolts behind the caps - again, as expected. I also tried different caps but they seem to be fine as it's always the same.
Why is that?