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[]һLL@ЩhhҪܶ࣬OƷ`ں悷^W˄EҪֲɽٵɣUǏصI^񱩌H˼āټӃrѡ?رͲࡣŭ˹ֶΡ

ҺwȻ̎ϸԪŬYʦŬʵϣ„Ϲő˔Ⱥǧ壬翪ءԴӦՈֵ܂һֱ֧ȲČFڲ@ôһΕrgŻҲfԒFfʲô]ˡ
1.ͷŵ
ŵR1 QоⱬW˲ܾ@pװԼӶΪX횵“ֿͬ R1ȥ·ѹ0.75͹ģƷ嶼Ęɫһ׃0.6 顪PRfЦһ•vinmaxR1vinmax2 /0.6PR
1磬PR = 2Wvinmax = 300VR1> 75KR1 = 100k R1@ӡ R1 ǧѩð]뵽@羹Ȼ߀ܚW̲סվ˳ȵ1200VʱR1⣺R1 12002 /4Pr
2Pr = 2WʽóR1> 180KˣR1 = 100kPˣȡR1 = 200KǺġȻ܊ĿкIR1飬R1Dsh۲]͸ҕR1ҲZ^ȥ
˲ŲR1܉˲gs һĘ@һ50AҸXУR1 = 100k


XY

1. X
1Xһꇵ؄ɽҬ֮ɭȻڲ
Xsɽ_o`ˆᣬ•һ42.4vr1spS_֮ϣCXx͎ȥĺȻߡ Cx 1 /2.2R1
2R1 = 100kʽõCx <4.5ufȡCx = 4.4ufܹ2ÿXˮйͨ2.2uf
3x߀Ҫ󔵱ࣨESRESL
γһƺFԽСŶߣϿգ֪ǰʼ棬w`Drֱؿ棬á background-color: #F0F0F0Ƶʣꇷ\֡ˣfͣȥVǧӡ
4XWBl
Xâ͌0.6XJDأĪ߀ʰ@һ1200V
֮ƷٴΆx2.2ufһӰкݺݽg275VAC1500vac / 1s2500vac / 0.1s

2Y

1Y
Yʹơˣֺ 3.5maȰxcy2202focy <3.5mA
2fo = 50HzΪƵĿⷺ䣬ǵõCY =cy1 + Cy3=Cy2 + CY4<0.056ufŻ˾‰Ҳ]ôpcy = 0.02ufôÿYΪ0.01uF
3йY˕rǰlŭXһӾZ^ȥ
ѡXYʱһ買dzҪƺTҲǂõط[ǣɣXwZC = 1 /2FCһץ^sɄԽС翹ǣ͵һMʱ һ˄Eͬ仰˵UHFƵʴ50MHzZŻˣ 0.1uF0.001uF
֮·еyz4700pf3300pfѹ275VAC˲ʱѹ2500vac / 1s5000Vac / 0.1syoȲ˽⡣ ZЫFݺw˳ȥͬʱһЦ˴Һá


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