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l(f)ڣ[2007-2-12]    [5746]ΡЇ늚ЈُW(wng)[EM39.com]{(bio)pԄӝL}
      ɶBgᘌǰڿǵBL(fng)l(f)bãO(sh)Ӌ@늿·DBl(f)늙CĽݔ늉18VRMSݔ늉˶·Oxõ򉺽ФػOܡ늌ɹ(ji)k懚늳M늕r14V×2=28VO򉺽03VӋ31Vʲ31V㉺IC1DC-DC׃QоƬLT1173·ݔ늉“(lin)ݔ뵽IC1Vin(dng)FB늉1245VrIC1(ni)24kHzʎݔSW2늉(jng)R1R2։ʹFB늉Ҳ(dng)ߵ1245V(ni)ʎͣʹݔ늉½˷(f)@ú㉺ݔ

DR1R2`늉zݔ늉Vout=(1+R2/R1)×1245V=(1+15k10k)×1245V=31VR6l(f)늂(c)zy裬R4zyÔ(sh)늉yωQֵR3IC1(ni)_P(gun)R5裻D7ÁֹL1ķ늉ӰIC1SW2D8OH늽Y(ji)dz14Сr_600mAh_525mAhʹó90(dng)L(fng)ٞ1/rL(fng)~_ʼD(zhun)_ʼs40mA(dng)늳ؿMrpСLrgҲp늳ڏL(fng)r늳Ҳl(f)ϽBL(fng)l(f)b_ˮƽӰl(f)늙C(sh)xøʵİl(f)늙CԔU䑪(yng)÷


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