Gentlemen,
here are the schematics for the CPA 602:
As I want make new PCB's I want to optimize the circuit ...
Please give me your ideas to discuss how we can optimize it.
One thing I already changed are the cap's at the end. There is the option to use one Axial-Cap or 5 Radial Caps. This I did, because I have a new housing where I can implement higher Caps. The idea is to use 5 Nichicon FW 2200µF 63V in parallel.
Here is a overview about the caps I want to use:
Part Original Value Value Brand Value Notice
C1 0,001 µF 0.001 WIMA FKP2 1% 1000 pf 63V
C2 22 µF 50V 22µF 50V PANASONIC FC 22 µF 50V
C3 10 µF 50V 10µF 50V ELNA Simlmic II 10 µF 50V
C4 10 µF 50V 10µF 50V ELNA Simlmic II 10 µF 50V
C5 100 µF 35V 470µF 50V ELNA Simlmic II 470 µF 50V
C6 100 µF 10 V 100µF 10V PANASONIC FC 100 µF 10V
C7 0,01 µF 0,01 µF 63V WIMA FKP2 1% 0,01µF 63V
C8 100p 68p Styroflex 68p
C9 68p 68p Styroflex 68p
C10 0,1 µF 0.1 Vishay Roederstein MKP 0,1 µF 100V - 1%
C11 0,1 µF 0.1 Vishay Roederstein MKP 0,1 µF 100V - 1%
C12 2200 µF 63V 4700µF 63V Roederstein Audio Gold 4700 µF 63V Or C14 - C18
C13 22 µF 100 V 22µF 100V PANASONIC FC 22 µfF 100V
C14 2200µF 63V NICHICON FW 2200 µF 63V Alternativ to C12
C15 2200µF 63V NICHICON FW 2200 µF 63V Alternativ to C12
C16 2200µF 63V NICHICON FW 2200 µF 63V Alternativ to C12
C17 2200µF 63V NICHICON FW 2200 µF 63V Alternativ to C12
C18 2200µF 63V NICHICON FW 2200 µF 63V Alternativ to C12
All resistors will be Vishay Dale Metal Film 0,25W.
What are your thoughts ....
All tips are warmly welcome ....
Regards from Germany