Questions tagged [buzzer]

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Where to put a buzzer so that it goes off when there is light (and should stop when there is dark)

I've successfully created (and breadboarded) this circuit: simulate this circuit – Schematic created using CircuitLab I cannot figure out where to put a buzzer so that it goes off when the LED ...
0
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1answer
36 views

Buzzer not buzzing in proteus 7.7v - used ic555

I am trying to simulate a mosquito repellent in Proteus v7.7. It uses an NE555 in astable mode. My problem is that I cannot hear the buzzer buzzing. I checked my circuit and everything seems correct ...
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1answer
49 views

No display at all tests, but shows continuity [closed]

My multimeter buzzer is ok and sounds when continuity is checked. However, no display on the LCD. Also, no numbers are showing in every tests voltage, resistance, etc. I have replaced the battery and ...
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2answers
125 views

Driving a tiny speaker via pwm, amplified with a BJT - in reverse?

I'm playing around with a micro and a small buzzer (passive). I built up an simple emitter-follower buffer to reduce the load on my uC, but I accidentally installed the transistor backwards on the ...
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1answer
221 views

How to simulate Magnetic Transducer Buzzer (SMT8585-03H03LF) in LTspice- any model available?

I am adding a Magnetic buzzer into the design. Buzzer part number is SMT8585-03H03LF from Bestar electronics. Below are the specifications for quick glance. Is it possible to get a LTspice model ...