Buzzer yog ib qho kev sib koom ua ke ntawm cov khoom siv hluav taws xob, siv DC voltage fais fab mov, dav siv hauv computers, tshuab luam ntawv, tshuab luam ntawv, tswb, khoom ua si hluav taws xob, tsheb siv hluav taws xob, xov tooj, timers thiab lwm yam khoom siv hluav taws xob ua suab nrov. Buzzer feem ntau muab faib ua piezoelectric buzzer thiab electromagnetic buzzer ob hom. Buzzers yog sawv cev rau hauv circuits los ntawm tsab ntawv "H" lossis "HA" (cov qauv qub siv "FM", "ZZG", "LB", "JD", thiab lwm yam)
1. Piezoelectric buzzer Piezoelectric buzzer yog tsim los ntawm multivibrator, piezoelectric buzzer, impedance txuam ntaus ntawv, lub thawv suab, plhaub thiab lwm yam. Qee cov piezoelectric buzzers kuj tau nruab nrog lub teeb-emitting diodes.
2. Multivibrators yog tsim los ntawm transistors los yog integrated circuits. Thaum txuas nrog lub hwj chim mov (1.5 ~ 15V DC ua hauj lwm voltage), multivibrator vibration, tso zis 100 ~ 500HZ suab teeb liab, impedance matcher los txhawb lub piezoelectric buzzer suab.
3 Piezoelectric Buzzer [1] yog ua los ntawm txhuas zirconate titanate los yog lead niobium magnesite piezoelectric ceramic khoom. Ib qho nyiaj electrode yog plated ntawm ob sab ntawm daim ntawv ceramic, uas yog polarized thiab hnub nyoog thiab tom qab ntawd muab khi rau ib daim ntawv tooj dag lossis stainless hlau.
4. Electromagnetic buzzer Electromagnetic buzzer yog tsim los ntawm oscillator, electromagnetic coil, hlau nplaum, vibrating diaphragm thiab vaj tse.
Tom qab hloov ntawm lub hwj chim mov, lub suab teeb liab tam sim no tsim los ntawm oscillator dhau los ntawm electromagnetic kauj, kom lub electromagnetic coil generates ib magnetic teb. Lub vibrating diaphragm vibrates ib ntus nyob rau hauv kev sib cuam tshuam ntawm electromagnetic coil thiab cov hlau nplaum
Kev faib tawm ntawm BUZZER:
1. Raws li lub hauv paus ntsiab lus ntawm nws txoj kev tsav tsheb, nws tuaj yeem muab faib ua: active buzzer (muaj cov kab tsav, tseem hu ua self-excitation buzzer) thiab passive buzzer (sab nraud tsav, kuj hu ua nws zoo siab buzzer);
2, raws li cov qauv sib txawv, tuaj yeem muab faib ua: electromagnetic buzzer thiab piezoelectric buzzer;
3, raws li kev ntim khoom sib txawv, tuaj yeem muab faib ua: DIP BUZZER (pin BUZZER) thiab SMD BUZZER (patch type BUZZER);
4, raws li qhov sib txawv tam sim no, tuaj yeem muab faib ua: DC buzzer thiab AC buzzer, DC yog piezoelectric buzzer tshaj plaws, nrog cov khoom siv piezoelectric, uas yog, thaum lub zog sab nraud tshwm sim los ntawm cov khoom siv piezoelectric deformation piezoelectric khoom yuav tsim nqi. Ib yam li ntawd, cov ntaub ntawv piezoelectric deform thaum siv hluav taws xob.
Electromagnetic buzzer, feem ntau yog los ntawm kev siv cov yam ntxwv ntawm cov hluav taws xob conductivity yuav tsim magnetic teb, nrog ib tug ruaj ruaj hlau nplaum thiab hluav taws xob conductor los tsim magnetic quab yuam los thawb lub tympanic membrane tsau ntawm lub kauj.
Vim tias ob hom buzzer lub ntsiab lus sib txawv, cov qauv piezoelectric yog qhov yooj yim thiab ruaj khov, tab sis lub suab nrov yog ib leeg, haum rau cov khoom siv tswb. Thiab electromagnetic vim lub suab zoo, yog li siv ntau dua hauv kev hais lus, suab paj nruag thiab lwm yam khoom siv.
