I have been perusing different types of feedback to trigger the self correction of the resonance and came up with this nifty idea. http://www.555-timer-circuits.com/metal-detector.html This gives a shift in frequency as output. Should fit quite cleanly into an fm control operation. The other circuit I have been toying with is a dual one shot delay serially connected triggered by a reflection back down the transmission line. I will post further when I get something going. Right now I am mentally juggling the inclusion points. I have another hidden gem I think I found that I have to check out. The LTPU is a masterpiece of engineering with everything well hidden and pretty much every thing is tidey-ed up in black, except the yellow capacitors and the white goo around the inside base. My suspicion leads me to believe this is a return line back to the control port in the back gap. This lends the ability to send pulses in two directions along a side of the unit, meaning the unit is actually two halves. Also in the LTPU prototype that I built I have the gap facing me. That is this is my point of entry. What if SM spun his device around 180' to give the tester a way to grab the device to shift it to feel the vibration? I'd be willing to bet SM was very excited with himself when he realized that this presentation further obfuscates the device operation. High SWR https://www.youtube.com/watch?v=w1eE13UXAKs
« Last Edit: 2018-09-27, 04:12:56 by giantkiller »
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