- Joined Dec 14, 2019
How can I get dual tone from a 12v buzzer with a simple circuit?
I also had a little trouble with “buzzer” for piezos when I first started seeing it but it is standard terminology now. The schematic symbol doesn’t distinguish, and the designation is “BZ”. I think it has come to mean ”a self contained device that produces and audible signal when voltage is applied”, which seems fair enough.With the circuit shown, and the internal oscillator piezo sounder, NO, the frequency is fixed.
In my vocabulary a buzzer is an electromechanical device, with an electromagnetic arrangement to open a contact that removes the voltage from the coil, (mechanical feedback.)
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