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leo
21-01-2010, 00:03
Yep, another dac to fiddle with:lolsign:

This one is the diyparadise Monica3 based around TDA1545A, I also fitted the add on Mojo which is basically a modified version of the onboard discrete I/V stage, it also has a pass B1 based buffer on the output

Onboard stock regulators have been upgraded to Paul Hynes shunts, the original CCS and diode string was left off the Mojo, fitted instead was a Paul Hynes Z17-5 for the dacs supply pin, a S17-83 type was used (fitted on the bottom of pcb) to supply the dacs current reference
2 x Z17-3v3 and 1 x Z17-5 was fitted to supply the digital input circuitry , a Z1A-15 fitted for the output stage (needs upping to 18v)

The leds do serve a purpose in the circuit even though it does look like a christmas tree when powered up
Still a few more things to try but so far its sounds real nice

http://i273.photobucket.com/albums/jj220/kingbusoms/mon31.jpg

http://i273.photobucket.com/albums/jj220/kingbusoms/mon32.jpg

http://i273.photobucket.com/albums/jj220/kingbusoms/mon33.jpg

http://i273.photobucket.com/albums/jj220/kingbusoms/mon35.jpg