Hi,
I've designed a PSU for the 5v part of my philips cd-pro2.
you can find schematic and layout there:
http://belinfabien.free.fr/cd/cd diy/carte alim meca.htm
I use ad797 for op-amp and all caps are os-con SG series.
From the schematic, I replaced R9 by a wire. With R9, I got some spikes at low freq with cd-pro2 plugged. Without, it oscillates at several Mhz
I also removed C12 (100nf) and the oscillation ampliftude decreased to about 0.3vpp
unregulated psu is around 9.5v, output is at 5v.
I've designed a PSU for the 5v part of my philips cd-pro2.
you can find schematic and layout there:
http://belinfabien.free.fr/cd/cd diy/carte alim meca.htm
I use ad797 for op-amp and all caps are os-con SG series.
From the schematic, I replaced R9 by a wire. With R9, I got some spikes at low freq with cd-pro2 plugged. Without, it oscillates at several Mhz
I also removed C12 (100nf) and the oscillation ampliftude decreased to about 0.3vpp
unregulated psu is around 9.5v, output is at 5v.