Electronics

Sample of 5VDC-9VAC Convertor

  • Example of using a 555 and a couple of transistors to make a 5V DC to 9VAC 1A convertor.
     
Schematics for C64 Plus with 80 Columns

Schematics for C64 Plus with 80 Columns

More schematics from 30 years ago.  This is for a computer known internally as the C64+ or C64 Plus and has built in 80 column support.  Unfortunately there is a page missing.

CB< Commodore, TED, C116, C264, Plus-4, Bil Herd, Dave Haynie, Terry Ryan, Fred

TED Drawings from the 1980's

 

 

 

CBM, Commodore, Z-80, CPM, C-64, VIC-40

CPM Z80 Cartridge for the Commodore VIC-40

More of those sets of drawings that I found in a box dating back 30 years to when I worked at Commodore Business Machines in West Chester PA. 

Proteus, Ares, PCB, ISIS, autorouter, simulation

Proteus: Full featured CAD/PCB design for $249

I just tried LabCenter’s Proteus Schematic, PCB and Simulation CAD  product after seeing the advertisement on the back of

Commodore C-64 80 Column Adapter

Commodore C64 80 Column Adapter

I have found several sets of drawings in a box that dates back 30 years to when I worked at Commodore Business Machines in West Chester PA.  I had assumed that these products eventually got release

TED, Flash Memory, C264, CBM, CBM CREW, Andre Melcher, Georgios Patsos

SD Memory for the C264

Georgios Patsos sent me a link to Andre Melcher's external memory expansion for the Commodore 264 series.

Tape drive case used to house Mendel controller and power supply.

3d Printer Construction: Ultimaker code and a cool housing

I built a Prusa Mendel from Makergear this summer.  It was a good quality kit and took the high road in many ways.  With that said, I still had to find and r

Commodore 8 Bit Repair Workshop - VCF East 2012 with Bil Herd & Rob Clark

Commodore 8 Bit Repair Workshop - VCF East 2012

Commodore 8 Bit Repair Workshop from VCF East 2012.  Rob discusses the current state of troubleshooting towers, dongles and silicon replacement, Bil discusses how to troubleshoot processors and com

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