Closed Commodore 64 replacement power supplies

[spcbm]

Power supplies for C64, these are new ones built by me, tested thoroughly with the two C64 I have, a 64C and a bread bin.


Model K641 I have 2 available, Price: 42 € for nº1 and 45 € for nº2 + Shipping cost
The only difference is that the # 1 has the fuse inside.


Model K644-D 1 available Price 60€ + Shipping cost, if anyone is interested I could manufacture some more but need some time (4-8 weeks), the price is 60 € or 55 € without the digital display.


In the links below the pictures there are more images.


Advertised elsewhere.


I want to clarify that although they have protection against overvoltage, it acts on 5.75 ~ 6.75V so it could affect some component of the C64, I have tried them intensely and I have had no problem.

Payment with Paypal friends&familly.
Shipping by registered mail is 16€ for Europe and 24€ for the rest of the world. They weight 600-900gr.
For some countries it can be shipped by mondial relay for only 8-13€.

Power Supply K641 for Commodore 64

• Input 220VAC , output 5,1-5,2 VDC @ 2A and 9VAC @ 1A
• AC input IEC-C14 socket protected with 315mA slow fuse. Suitable for most countries using appropriate IEC –C13 Power Cord.
• Switched-mode power supply for 5VDC line with overvoltage, short circuit, temperature and overcurrent protection.
• 12VA (9v 1,33A) Transformer for 9V AC line protected with PTC Polymer fuse which offer a resettable overcurrent protection.
• Power ON/OFF switch, led indicators for 5V and 9V .
• Dimensions: 78x118x55mm. Output cable length approx. 1m.
• Tested 30´ at maximum load and 6 hours at 80% load. 5 Volts DC line adjusted to 5,1-5,2 Volts to compensate for cable &C64 voltage drop. Tested 2 weeks (2h/day with a real C64).

http://s587.photobucket.com/user/kopsec/slideshow/en venta ebay/C64PS/K641_2


Power Supply K644-D for Commodore 64

• Input 220VAC , output 5,1-5,2 VDC @ 2.7A and 9VAC @ 1A
• AC input IEC-C14 socket protected with 500mA slow fuse. Suitable for most countries using appropriate IEC –C13 Power Cord.
• MEAN WELL RS-15-5; 15w; 5VDC; 3A switched-mode power supply for 5VDC line with overvoltage, short circuit, temperature and overcurrent protection.
• 12VA (9v 1,33A) Transformer for 9V AC line protected with 1A fuse.
• Power ON/OFF switch, led indicator for 9V , Dual Digital Voltmeter Amperemeter.
• Dimensions: 115x125x56mm. Output cable length approx. 1m.
• Tested 30´ at maximum load and 6 hours at 80% load. 5 Volts DC line adjusted to 5,1-5,2 Volts to compensate for cable&C64 voltage drop. Tested 1 week (2h/day with a real C64).

http://s587.photobucket.com/user/kopsec/slideshow/en venta ebay/C64PS/K644_1

 

[spcbm]

Power supply K641 nº1 sold outside amibay.

The other 2 still available.

 

[mattsoft]

these look pretty nice. you make them for 120v 60hz US operation?

 

[spcbm]

these look pretty nice. you make them for 120v 60hz US operation?

Thank you for your interest.
Yes I can make them for 120V 60Hz, just need to use a different transformer. The one I used has only 220V input, but there are others with 2 windings that can be used for 220-240 or 110-120V 50/60Hz.

 

[spcbm]

Power supply K644-D sold outside amibay.


K641 #2 still available.

 

[TheCorfiot]

It's a very nice looking unit and a great effort, however the Overvoltage protection circuit of 5.75 to 6.75 is not good enough, if the supply was to overvolt at 6V DC and keep going then you will have lost just about every chip in the c64.

If your PSU out is rated at 2 to 3 Amp then i would advise strapping a 3A 5.5V Clamp protection diode on the output..

Very easy mod to make and costs pennies

 

[spcbm]

It's a very nice looking unit and a great effort, however the Overvoltage protection circuit of 5.75 to 6.75 is not good enough, if the supply was to overvolt at 6V DC and keep going then you will have lost just about every chip in the c64.

If your PSU out is rated at 2 to 3 Amp then i would advise strapping a 3A 5.5V Clamp protection diode on the output..

Very easy mod to make and costs pennies

I think it's not so easy, but can you show me this kind of diodes? I think they are used for ESD protection.

I've beeen looking at Ray Carlsen saver: http://personalpages.tds.net/~rcarlsen/cbm/c64/SAVER/saver schematic.jpg but I think that the response time of this is too long.

I was thinking to make a new one using a dedicated IC like this: http://www.soemtron.org/downloads/disposals/mc3423.pdf

There are other options: https://easyeda.com/example/The_Eas..._PSU_overvoltage_protection_circuit-bS4ECcMXV
IMHO using a SCR or a MOSFET is faster protection that a electromechanical relay.

 

[spcbm]

Last power supply sold outside, please change the thread to CLOSED or SOLD.