Buzzer


Buzzer

A buzzer or beeper is a signalling device, usually electronic, typically used in automobiles, household appliances such as a microwave oven, or game shows.

It most commonly consists of a number of switches or sensors connected to a control unit that determines if and which button was pushed or a preset time has lapsed, and usually illuminates a light on the appropriate button or control panel, and sounds a warning in the form of a continuous or intermittent buzzing or beeping sound. Initially this device was based on an electromechanical system which was identical to an electric bell without the metal gong (which makes the ringing noise). Often these units were anchored to a wall or ceiling and used the ceiling or wall as a sounding board. Another implementation with some AC-connected devices was to implement a circuit to make the AC current into a noise loud enough to drive a loudspeaker and hook this circuit up to a cheap 8-ohm speaker. Nowadays, it is more popular to use a ceramic-based piezoelectric sounder like a Sonalert which makes a high-pitched tone. Usually these were hooked up to "driver" circuits which varied the pitch of the sound or pulsed the sound on and off.

In game shows it is also known as a "lockout system," because when one person signals ("buzzes in"), all others are locked out from signalling. Several game shows have large buzzer buttons which are identified as "plungers".

The word "buzzer" comes from the rasping noise that buzzers made when they were electromechanical devices, operated from stepped-down AC line voltage at 50 or 60 cycles. Other sounds commonly used to indicate that a button has been pressed are a ring or a beep.


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  • Buzzer — Saltar a navegación, búsqueda Buzzer Información personal Origen Buenos Aires, Argentina …   Wikipedia Español

  • buzzer — ● buzzer nom masculin (anglais buzzer, de to buzz, bourdonner) Petit vibreur utilisé pour vérifier la continuité électrique des circuits. buzzer [bœzœʀ] n. m. ÉTYM. Mil. XXe; mot angl., de to buzz « bourdonner ». ❖ ♦ Anglic. Vibreur sonor …   Encyclopédie Universelle

  • Buzzer — Buzz er (b[u^]z [ e]r), n. One who, or that which, buzzes; a whisperer; a talebearer. [1913 Webster] And wants not buzzers to infect his ear With pestilent speeches of his father s death. Shak. [1913 Webster] …   The Collaborative International Dictionary of English

  • buzzer — BÚZZER s.n. v. buzăr. Trimis de LauraGellner, 13.09.2007. Sursa: DN …   Dicționar Român

  • buzzer — c.1600, buzzing insect, agent noun from BUZZ (Cf. buzz). Of mechanical devices, from 1870 (steam powered at first; electric mechanisms so called from 1884) …   Etymology dictionary

  • buzzer — /ˈbaddzer, ingl. ˈbʌzə(r)/ [dal v. to buzz «ronzare»] s. m. inv. segnalatore, cicalino …   Sinonimi e Contrari. Terza edizione

  • Buzzer — A mill term for a hydro extractor …   Dictionary of the English textile terms

  • buzzer — ► NOUN ▪ an electrical device that makes a buzzing noise to attract attention …   English terms dictionary

  • buzzer — [buz′ər] n. an electrical device that makes a buzzing sound as a signal …   English World dictionary

  • Buzzer — Bipeur Pour les articles homonymes, voir Beeper (homonymie). Un bipeur (en anglais beeper) est un élément électromécanique ou piézoélectrique qui produit un son caractéristique quand on lui applique une tension : le bip. Certains nécessitent …   Wikipédia en Français

  • buzzer — n. 1) to press, sound a buzzer 2) at the buzzer (at the buzzer, stop work immediately!) * * * [ bʌzə] sound a buzzer to press at the buzzer (at the buzzer, stop work immediately!) …   Combinatory dictionary


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