Talking About Power Supplies...
By Gabriel Torres on May 22, 2006 - 12:08 PM


Look what I found here in my junk closet: an Apple II power supply. For its time (1977) it was a breakthrough, since until then switching mode power supplies weren’t used. Designed by Rod Holt, it doesn’t differ a lot from power supplies used on current-day PCs, as we’ve seen on our Anatomy of Switching Power Supplies tutorial. We disassembled it to show you how it worked.

Apple II Power Supply
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Figure 1: Apple II power supply.

Apple II Power Supply
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Figure 2: Apple II power supply.

Apple II Power Supply
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Figure 3: Inside the Apple II power supply.

Originally at http://www.hardwaresecrets.com/blog/Talking-About-Power-Supplies/45


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