Roff
Well-Known Member
I played around with MOSFETs with no success. Here is a circuit that simulates really well. Your output voltages will be about ±6.1V with 70mA loads, which I am betting will be just fine.
You can change the slew rate by changing R1 (make it a pot) and/or C1. You might also have to change C2, which is there to prevent oscillations.
If you change the slew rate of +out, the slew rate of -out will follow it.
Having slow turn-on power supplies does not gaurantee that you will have no pops on your audio, but I guess it's worth a shot.![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
The voltage-controlled switches are for simulation only.
I have included the .asc file, which is the simulation file for LTspiceIV.
You can change the slew rate by changing R1 (make it a pot) and/or C1. You might also have to change C2, which is there to prevent oscillations.
If you change the slew rate of +out, the slew rate of -out will follow it.
Having slow turn-on power supplies does not gaurantee that you will have no pops on your audio, but I guess it's worth a shot.
The voltage-controlled switches are for simulation only.
I have included the .asc file, which is the simulation file for LTspiceIV.