Schematics for NEC 602 CDROM Drive?

Status
Not open for further replies.
Jump to Latest
#141
AudioNewb said:
Okay, then, we're off and rolling! Here's the final parts list in case anybody else is interested:

1. Mouser part #: 575-413314
110-13-314-41-801000
Mill-Max Capacitor Sockets
14P GLD PIN GLD CONT

2. Mouser part #: 647-UHE1H560MED
UHE1H560MED
Nichicon Low Impedance Aluminum Electrolytic Capacitors - 105 Degree
50V 56uF 6.3X11

3. Mouser part #: 80-C412C104J5R
C412C104J5R5CA
Kemet Conformally Coated Axial Ceramic Capacitors
50V X7R .1uF 5%

4. Mouser part #: 271-97.6
271-97.6
Xicon 1/4W 1% Metal Film Resistors
1/4WATT 97.6OHMS 1% 50PPM

5. Mouser part #: 271-330
271-330
Xicon 1/4W 1% Metal Film Resistors
1/4WATT 330OHMS 1% 50PPM

6. Mouser part #: 505-MKP20.1/100/5
MKP2-.1/100/5
Wima Polypropylene Film Capacitors
100V .1uF 5%

7. Mouser part #: 623-2743001112LF
2743001112
Fair-Rite EMI Shield Beads on Leads
LF Z=68 OHM @ 100MHz

Mouser part #: 511-74VHC04B
74VHC04B
ST 5V Logic (HCF4xxx, M74HC/HCT, 74AC/ACT, 74VHC/VHCT)
DIP-14 Hex Inverter

Digikey part #: DS9638CN-ND
DS9638CN
IC DRIVER DUAL HS DIFF 8-DIP

Radio Shack part #: 276-150
Multipurpose PC Board

All the parts to build two of these things should be well under $20. I'll post a photo when I'm done!
Click to expand...

Finally got around to building the thing. I don't have it hooked up yet, but I had completely neglected the actual size of the components in my original diagram, and that threw me off a bit. Might have been easier to use regular protoboard instead of the the stuff with all the traces I'm using (what I had laying around).

New diagram is attached...hopefully I'll get music running through it sometime over the long weekend!

ttl_spdif_converter_v45.gif
 
#143
fastcat95 said:
Hello to All:

Does anyone have an unused (working) switching P.S.
for the NEC 602 external CDROM unit that they would
like to sell?

Thansk!

Fastcat
Click to expand...


Hmm, you could make your own PSU. I just used a 12V DC adaptor that had a good clean supply and hardwire it in place. You could also put your own adaptor plug on the back.
 
#144
Could anyone please send me or make me available the NEC602 schematics? as far as I can see, neither the jpg nor the pdf links are active yet...

I was thinking about upgrading the clock, and adding SPDIF reclocking, with a separate power supply, but I have read a previous post in this thread that seems to suggest that a "super" clock is possibly not the most important thing to address, for CDR602. I am right, or my impression is wrong?

Thank you a lot in advance

Kind regards
Giorgio

Thank you a lot in advance

Kind regards
Giorgio
 
Status
Not open for further replies.
Top Bottom