DHR-Turbo-pwr-sch维修电路原理图.pdf
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DHR-Turbo-pwr-sch维修电路原理图.pdf
DHR TURBO 2008 Carlos MergulhoBC556270R10F16Vx2470pF100nF2200F100V220nF100V4.7nF100nF220F100V47nF100V16V/1W10pF39pF100nF100nF1F100nF100V1000F100V2.2F16Vor Film-70VDCOUT+70VDC220F100V3K62200F100V220nF100V33K10R.5W100R82R100R(75R)offsetadjust820R33K270R3K3.5W3K3.5W33R1N4002 x4200R(100R)biasadjust68R68R33R4R7220nF100R2R22R22R22R22R22R21R5W1R5W1R5W1R5W1R5W1R5W1R5W1R5W1R5W1R5W330R1R5W1R5W10A5A5A2R22R22R22R22R22R2100R4K74K7BC556BC546BC5462SC47932SC47932SA1837REV. JULY 5, 2008SCHEMATIC BY TODD A. JOHNSON100nF100V1000F100VDriver transistors mount on mainheatsink with the output transistors Diode string must be thermallycoupled to main heatsinkThis transistor needsIndividual heatsinkNotes & Tweaks: Output transistors are 2SA1943/2SC5200 or equivalentDriver transistors would be better if they were same device as output transistors.Diode string would be better if they were same device as output transistors. (Wired Base to Emitter.)Output Coil is 20 turns of 1mm (AWG 18) wire.Small signal transistors can be either BC556/546 or 2N5401/5551Output rail capacitors can be 470F to 2200F. Bigger is probably better. Adjust bias to 35-40mA, then tweak until voltage across 1R output emitter resistors are 1mV or slightly less.1HRadioFans.CN 收音机爱 好者资料库
