Discuss How buzzer work transistor in the UK Electrical Forum area at ElectriciansForums.net
I'm sure someone will correct me if I'm wrong, but in the majority of use cases transistors are used as amplifiers. In this case it could be it's being used as a switch, allowing a small current (the output from say a microcontroller) to switch a larger current (the current required to drive the buzzer).
But it could also be being used to create the signal that actually makes the sound. You can create a simple square wave oscillator using a very simple flip-flop circuit.
So, with the limited information you've provided, I'd say it's being used as a current amplifier to switch the power to the buzzer.
I know, but it's ChristmasI suspect you're wasting your time SC.
Thats not for another week unless Newport is in a different time zone to the rest of WalesI know, but it's Christmas
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