Got an old computer lying around ?


http://www.wikihow.com/Convert-a-Computer-ATX-Power-Supply-to-a-Lab-Power-Supply

Great for doing all these ignition experiments.

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Not free but about $100 cheaper than anything else
you can buy with voltage and current read outs.

Digi Key page 2440


Paul Lamar


I have done this, works a treat for my electronics projects!

William Holt.