Classe-DR3-pwr-sch维修电路原理图.pdf
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1、Date: February 26, 2003 SheetofSize Document NumberREVBdr3_vhc.schTitleClasse DR3 Very High Current (VHC)Federico Paoletti+VQ?MJ11016Q?MJ11016R19100Q7MPSA56Q8MPSA56C104700uC110.1uR3375C310nQ?MJ11016Q?MJ11016R12274Q2MPS8599D11N4148D21N4148R2068kR131kIN 1OUT 3GND2U?LM7812CTR1110kC?1500uC?5uR933.2kC?5u
2、R?10kR?4.99kQ?2N4341Q3MPS8599Q5MPS8599R?10MR?100kR14RC5100uC60.47uC710nQ4MPS8599Q6MPS8599R?200R?511C80.1uC930pR2275kRT15k25cR230.27R240.27R270.27R280.27Q?MJ11015Q?MJ11015idlecurr.R250.27R260.27R290.27R300.27R314.7L12.5uHR324.7C1447nQ?MJ11015Q?MJ11015Q9MPSA06Q10MPSA06R21100C124700uC130.1uR3475C410nR1
3、6681kD31N4148D41N4148R1733.2kR18274kR151.5kR1049.9kR11100kdc out offsetT?D?MDA3502RV?VARISTORC?10nC?10nC?30mFC?30mFC?30mFC?30mFC?4.7uC?4.7uC?10nC?10nregolare bias x 1 V di cadutasu queste resistenze (=10A)R?0.1(4/0.4)R?0.1(4/0.4)C?0.47uC?10nC?0.47uC?10n+V-VF?25AF?25Aper il dr3b non VHC togliere 2 coppie di finalie togliere due resistenza da 0.4 Ohm per ogni ramoil bias si regola a 1.5v di caduta (7.5 A)i condensatori di filtro da 30 a 20 mF-VRadioFans.CN 收音机爱 好者资料库
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