www.webx.dk Start page
OZ2CPU Radioamateur mainpage
Homemade electronics Stuff old and new
SONY CD AMP.

My SONY CD player had a noicy audio amplifier made of normal dual op-amps
So I found the best available single op-amps that was on the marked in 1993
The filter schematics is the same, but now all is DC-coubled and all powersupplys to each op-amps
has seperate decoupling capasitors and series resistors
The power supply +-12 volt is double regulated for each channel, so a total of 8 regulators is used
An extra transformator with 4 separate winding is mounted and connected before the powerswitch
so that power is also supplyed to the analoque part.

Only op-amps is mounted inside this small PCB box, not the powersupply.
This box is then mounted inside the Sony CD player