Ciclotron-DBS720-pwr-sch维修电路原理图.pdf

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1、ARQUIVO:.DBS720_V1.DSNFOLHA: 01/01DATA: 25/05/2001CIRCUITO: POWER / FONTE I N D S T R I A E L E T R N I C A L T D A.DBS 720VISTA FRONTAL2K247K100pF2K2470K10K100K18V10K100K18V2K2x1/2W47uFx50V2K2x1/2W1K547uF47uF22pFx100V33K22R330R330R470R1K5BD13910KBD1402SA19412SC5198100Rx1W0.47Rx5W0.47Rx5W100Rx1W39pF

2、x500V47Rx1/2W47Rx1/2WBD140470R39pFx500VBD139OVERLOAD CH A/BPL28110KBC32710KBC3371N4148BD1351K212K100R1N41481N414812K47uF100R47uF1K21N40021N4002100Kx50V100Kx50V10Rx2W100Kx50V10Rx2WOUT A/B OUT A/B PL231CANAL A / CANAL B22OVTDBS720REDE3A10Kx630V110V8 x 1N40012200uF x50V2200uF x50V2200uF x50V2200uF x50V

3、3K3x1WCH ACH BONBD 135BD 139BD 140IC10032K24K7220RBC54722KBC55750KB15K4.7uF4K7VOL. CH AVOL. CH BBC547220R50KB4K7100uF22K4K74.7uFBC557100K6V215K4K7CLIP BPL279PL281INPUT CH AINPUT CH A6V2100uF100K1KCH BCH ACH A/BPL232AFONTE1Kx2W1Kx2WTERRA EXTERNO250V x 10A47uFx50V2K22SC51982SA1914 VISTASUPERIORIC1003C

4、LIP APLA005AJUSTE OV AJUSTE CORRENTE26,4 Vac+ 32,1 VdcCORRENTE QUIESCENTE- 6,2 VdcTENSO DA FONTE (-B1)TENSO DA FONTE (+B)EM REPOUSO- 6,2 Vdc29,8 Vac- 32,1 Vdc+ 40,5 Vdc+ 6,2 VdcAJUSTE DE OV+ 6,2 VdcTENSO DA FONTE (-B)TENSO DO TRAFOPOT. MXIMATENSO DA FONTE (+B1)- 40,5 Vdc12,7 mA ( 5,9mV DC)*3 mV DC*I

5、NPUT CH BINPUT CH B* A corrente quiescente deve ser medidasobre um dos resistores de 0.47Rx5W,estando o aparelho com carga e semsinal de entrada.Todos resistores so de 1/4 W e todoscapacitores eletrolticos so de 25V,exceto aqueles com indicao.* O ajuste de 0V dever ser feito nosjacks de sada, estando o aparelhosem carga e sem sinal de entrada.Os canais A e B so idnticos.1 - 32BC 547BC 337BC 327BC 557+B-B+B-B-B+BBCE+B1-B1+B1-B112345678ECBCBE+62148735+RadioFans.CN 收音机爱 好者资料库