I know this circuit is an oscillator circuit and it senses another signal of same frequency, but I don't understand
- the calculation behind it, and
- the reason for emitter inductor,
- 3.9k collector resistor and
Can someone please show me the calculations for this circuit?
I made one myself but I am tired of tuning it. It only receives signal within few centimeters. It receives not only my 27 MHz toy car remote signal but any kind of signal, e.g: walkie talkie signal.
here is the link for that circuit: http://www.talkingelectronics.com/projects/27MHz%20Transmitters/27MHzLinks-1.html
They explained the circuit but didn't show the calculation, and they also didn't mention the inductor value.#
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