Buzzer

As Summer, even Buzzer (of English. Buzzer to buzzer, beeper), is defined as an electrically controlled acoustic transducer that produces a buzzing or beeping sound.

Some of these signal encoders operate electromagnetically, other, higher -sounding transducer consisting of a piezoelectric transducer.

Use An electromagnetic buzzer, either a power frequency AC voltage with a coordinated membrane or they work on the principle of Wagner's hammer like a horn.

Piezo transducers are driven by an AC voltage in the range of 10 V to 100 V and can deliver loud sounds in a very narrow frequency range. The transducer in this case represents an electric capacitance in the range of 100 nF and requires to control the appropriate electronic drivers. The transducers are mostly used for acoustic signaling; they are hardly suitable due to the narrow Playback frequency range for voice or music playback.

Until the 1990s, such transducers are used in electronic game consoles. Can be found in areas of application where inexpensive loud sounds must be generated, such as an electronic chime in landline phones, as a beeper in microwave ovens, or as a signal horn for warning signals in industrial automation.

The term buzzer was due to television game shows, where buttons are used, with which, for example, a player get the answer right or game management ( jury ) can cause an objection (abort, etc.), used also for those buttons: When you press this, an acoustic signal is usually recorded, which resembles those of such signal generator.