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post #31 of (permalink) Old 24th May 2009
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Originally Posted by martin999 View Post
...I have never heard the terminology 'electronic earth'...
I saw that phrase used once before where a "false earth" was created in a 18v circuit to generate a 12v DC potential (not automotive of course). It was achieved by using a 5.1v zener diode to bring the anode down by 12.9v from the feed, creating the +12v supply

Sorry for the off topic
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