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A Novel Buzzer Circuit

2017-08-16 21:10  
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This article is an introduction to the novel buzzer circuit. The circuit will be a  relay , a small audio transformer and speaker series. When the switch is pressed, the relay will operate through the transformer primary and closed relay contacts. When the relay is operating normally closed contact will open and remove power from the relay contacts close and the sequence is repeated, very quickly ... so fast current fluctuations caused by the pulse transformer primary, so twice. Speaker tone is proportional to the frequency relay so.

buzzer novel buzzer