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Found 1 result

  1. Hi! So, I have this ADAM, and it needs the printer to work because it houses the power supply. Guessing many here know this, but I thought for those who don't I'd re-iterate. I've built many computers, and a few have been mini-itx. They use these teeny tiny power supplies and are cheap and easy to get. I happened to have several on hand and settled on an Antec ISK300 Power Supply. The Antec Mini-ITX PSU used a 19v Laptop Style Supply, which are plentiful and easy to acquire. My Final idea is to be able to plug this into a modern TV (with composite av jacks) and do some gaming and so on. I purchased ADAMcon's IDE CF, Printer Card with Boot EEPROM, and 256k memory expansion. It came with it's own Power Supply, and will be building a lead for it too. The LPT port I'll drill into the back and route internally as well making for a nice tight package. Power Supply puts out one +12v, +5v, -12v, +3.3v (not used). The ADAM needs +12v 0.3A for Logic (RF Modulator), +12 2.55A for Inductive loads (Data Pack Drives?), -5v 0.2A for Video memory, and +5v 3.0A for Logic (everything else). I plan to use a 7812 Linear Voltage Regulator for the RF circuitry which I'm not even using as I used Composite and Audio out. And a 7905 negative linear voltage regulator to regulate the -12v for the video memory. And a large 4pole double throw toggle switch to switch between the Printer power, and Internal Power. A Single rocker switch up front to switch the +19v supply on and off. So, this is a build thread to show my progress, and possibly inspire others around to drill and hack into 30+ year old plastic and make something old, better. Tear down and one of my mini-itx psu's, which turned out to be damaged. Lower case shell, Antec 300W PSU, Bent Aluminum Riveted to Lower Case Shell. Rear LPT printer port, a pci bracket is used with a dremel to cut the hole. Nuts are raised too high, so I used a drill to cut a hole in by hand. Mounting of Aluminum L brackets and fitement Mounting the Linear Voltage Regulators using the Aluminum as heat sinks. You can kinda see the brass mainboard standoffs Final fitment for the night. And that's how I spend my friday nights! I should be out looking for a future ex, but instead working on my ol' ADAM. Thanks for reading, and comment away!
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