Ultrasonic Ranging boost special reversing radar boost step-up transformer arduino compatibile
The component is an ultrasonic sensor that allows to "measure" relatively short distances.
The component works like a radar, ie it emits a signal and expects its echo if there is an obstacle in the operating range.
Measuring the time that passes from transmission to reception and knowing that sound spans about 340m / sec it is possible to know the distance.
Variable oscillator, used to calibrate.
Inductors for adjusting the frequency of an oscillator:
Gira: S1 42 / s2 420
Core: DR screw / M11OR port
Central frequency 40k hz
Inductance s2 8.0 mh +/- 5% variable / measured frequency: 252 kHz
Download Q min: 80 / measured frequencies 252 Khz
Variable inductance to obtain special frequencies.
They are usually found on RF transmitters and receivers, used by amateur radio.
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