2025 Part Abuse Problem: A Piezo Disk Powers A Transmitter

A piezo disk transducer is a useful half for reproducing beeps and boops, and also can perform as a rudimentary microphone. Being a piezoelectric ingredient, it will possibly additionally generate usable energy. Sufficient to run a radio transmitter? [b.kainka] is right here to seek out out, with what could be the easiest doable transmitter circuit.

The lively ingredient within the circuit, equivalent to it’s, comes from a crystal. This features as an especially steady and excessive Q tuned circuit. When excited by a pulse of electrical energy, the circuit will carry oscillations in an analogous method to a bell ringing till the heart beat is exhausted. A small lever customary from a bit of wire provides the voltage by flexing the piezo disk and a contact, a diode discharges the reverse voltage because the disk returns to form, and a small capacitor gives an AC path to floor. It really works, if a small pulse of very low-power RF close to the crystal’s frequency will be described as working.

It might not be probably the most sensible transmitter, nevertheless it’s actually one thing we’ve not seen earlier than. It’s a part of our 2025 Part Abuse Problem, for which you continue to have time to make an entry your self when you have one.