Microbuzzer.com · Posted on 07-08-2010 by microbuzzer

Fault Analysis of Electromagnetic buzzer

1, no do not ring before installation. – This is a quality in itself is a buzzer not work (the first one kind of buzzer such cases the probability of occurrence of more);

2, after welding when no sound or sound without sound. – This situation could be used in iron welding power is too large (suggested 20-30W soldering iron) or too long (recommended 3 seconds to complete a solder joint) causes the buzzer pin and coil weld heat melted Weld;

3, the welding process after the buzzer sounds out quietly, without sound or sand tone change. – This situation may start the buzzer of the current is too small or too large (buzzer normal operating current 20-30mA) can not lead normal tweet buzzer;

4, after a period of time using the buzzer sound or no sound change. – This situation may be too long tweet continuous buzzer (buzzer continuous period of not more than 8-10 hours a tweet, or become sound or burned) or the buzzer by the Central
Environmental impact;

5, after the buzzer wire welding work on board, there was no sound but the tone or removed to DC power supply test is no problem. – This situation may be subject to interference buzzer. Above five kinds of situations are most likely to use process buzzer malfunction, other faults are no longer made in this description.

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