Buzzer (electrics)
A buzzer - also buzzer ( borrowed from the English buzzer , for "Summer") or Pieper called - is an electrically of driven acoustic - signal transmitter , which is also a buzzing or (depending on the pitch) beep can generate.
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Some of these signal transmitters work electromagnetically, other, higher-pitched transmitters consist of a piezoelectric transducer .
Electromagnetic buzzers either use mains-frequency alternating voltage with a membrane that is matched to it, or they work like a horn on the principle of Wagner's hammer .
Piezo sound converters are controlled by an alternating voltage in the range from 10 volts to over 100 V and can emit loud tones in a very narrow frequency range . The converter represents an electrical capacitance in the range of 100 nF and requires appropriate electronic drivers to control it . The converters are mostly used for acoustic signaling; they are hardly suitable for speech or music reproduction due to the narrow reproduction frequency range.
Such transducers were used in electronic game consoles as well as in personal computers until the 1990s , where they were later increasingly replaced by the system loudspeaker . They were and are also used in areas where inexpensive loud tones have to be generated, such as electronic ringing in landline telephones , as signal tone generators in microwave ovens or as signal horns to warn of danger in industrial automation.
The term "buzzer" was originally used in TV game programs - and derived from it in the game Buzz! - used, in which emergency stop switches were initially used, with which, for example, a player was given the right to answer or a game management (English: the jury ) could bring about an objection, a termination or the like. When pressed, a short and very loud buzzing sound was usually played.
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Supporting documents and comments
- ↑ probably borrowed from the English beeper , compare also Wiktionary: de: Beep and Wiktionary: de: Piep