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Originally Posted by Jim
Thanks for your reply.
I read that the device has a resonant frequency amplification circuit. That's an awesome feat of engineering for a calculator!?
Maybe the Buc's will go to the Superbowl this year (adding to the maybe-feast)  |
A length of tubing will appear to amplify any sound at the resonant frequency of the tube even though there is no power circuitry involved. When you hold a tube to your ear, only the resonant frequency sounds will become louder than the rest, if there are resonant frequency sounds in the air.
From what I gather, the Examiner amplification is not done by power amplifiers such as transistors, but by allowing a resonant circuit to oscillate at its resonant frequency and tune any signals at the same frequency, same as a crystal radio tunes resonant frequencies. I suppose this is Rangertell's way of saying their resonant frequency circuitry amplifies tiny electronic signals in the air if they are present.
Awseome feat?
Nah, it's been done with crystal radios decades ago.
But with a calculator?
Maybe. I can run some tests to see if there is any calculator signal coupled into the Examiner circuitry, as well as check for frequencies from the calculator if you want.
Best wishes,
J_P