10-06-2016, 02:31 PM
Here's a thing about the LED, took me a while to suss it. The 9v battery supply goes through the LED, then onto the circuit board where it is regulated via a zener to 5.6 volts.
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Homebrew KHZ signal calibrator
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Homebrew KHZ signal calibrator - by ed731pdh - 10-06-2016, 12:08 PM
RE: Homebrew KHZ signal calibrator - by ed731pdh - 10-06-2016, 12:59 PM
RE: Homebrew KHZ signal calibrator - by Mark Hennessy - 10-06-2016, 01:57 PM
RE: Homebrew KHZ signal calibrator - by ed731pdh - 10-06-2016, 02:31 PM
RE: Homebrew KHZ signal calibrator - by Mark Hennessy - 10-06-2016, 02:39 PM
RE: Homebrew KHZ signal calibrator - by ed731pdh - 10-06-2016, 02:51 PM
RE: Homebrew KHZ signal calibrator - by ed731pdh - 10-06-2016, 02:52 PM
RE: Homebrew KHZ signal calibrator - by ed731pdh - 10-06-2016, 10:01 PM
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