Lub switching circuit tswj cov zis rau lub luminaire. Kev siv hluav taws xob tsawg tsawg ua rau qhov ua tau zoo ntawm qhov hluav taws xob thiab txo cov cua sov hauv lub dimmer. Peb pom zoo kom siv peb-terminal bi-directional thyristor (SCR) uas tsis tshua muaj tuav tam sim no.
Qhov tuav tam sim no ntawm bidirectional thyristor yog tsawg dua 10 mA. Lawv kuj tseem tuaj yeem ua haujlwm ruaj ntseg ntawm qhov kub thiab txias tshaj 100 ℃. Txhawm rau txhim kho kev ua tau zoo ntxiv, xav txog kev siv MOSFET los tswj lub zog ntawm ob-directional thyristor. Lub zog MOSFET nrog qis RDS (ON) tsis kam tsawg dua 0.5 ω thiab lub sijhawm hloov pauv ceev tau raug xaiv los txo lub zog poob thaum hloov khoom siv thiab lub zog siv ntawm MOSFET thaum nws nyob hauv lub xeev.
Koj tuaj yeem siv tus tsav tsheb ib leeg-chip rooj vag kom yooj yim rau kev tswj xyuas kev tsav tsheb mosFEts. Lub qhov rooj tsav tsheb nti tuaj yeem muaj ob lub tshuab hluav taws xob kom tswj tau siab - thiab qis-kawg MOSFEts thiab ua kom lawv qhov kev hloov pauv ceev. Xaiv lub rooj vag tsav tsheb uas muaj peev xwm txaus los tsav MOSFET. Thaum kawg, MOV tau siv los tiv thaiv Circuit Court los ntawm kab voltage surge ntawm lub switching circuit, thiab lub MOV tuaj yeem tiv taus qhov ntsuas hluav taws xob zoo ib yam li cov lus pom zoo los ntawm AC input tiv thaiv Circuit Court.