XTL , 3 months ago A crystal oscillator is an everyday very small hard bendy piece of quartz. Does that count? It’s not very visible other than the side effects. A piezoelectric transducer would be another. That might even show on a mechanical gauge.
A crystal oscillator is an everyday very small hard bendy piece of quartz. Does that count? It’s not very visible other than the side effects.
A piezoelectric transducer would be another. That might even show on a mechanical gauge.