Crystal tester using a vacuum tube - Videokarma.org TV - Video

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Crystal tester using a vacuum tube

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12-20-2009, 12:24 PM

jeyurkon

VideoKarma Member

Join Date: Oct 2008

Location: Central Michigan

Posts: 1,699

Thanks! I might try that. I have a bunch of used color crytals I should check out.

What's that symbol to the left of the 1K resistor that goes to 120 VAC? It looks like a transistor.

John

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