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 Mergulho BC556 270R 10F 16V x2 470pF 100nF 2200F 100V 220nF 100V 4.7nF 100nF 220F 100V 47nF 100V 16V/1W 10pF 39pF 100nF 100nF 1F 100nF 100V 1000F 100V 2.2F 16V or Film -70VDC OUT +70VDC 220F 100V 3K6 2200F 100V 220nF 100V 33K 10R .5W 100R 82R 100R (75R) offset adjust 820R 33K 270R 3K3 .5W 3K3 .5W 33R 1N4002 x4 200R (100R) bias adjust 68R 68R 33R 4R7 220nF 100R 2R2 2R2 2R2 2R2 2R2 2R2 1R 5W 1R 5W 1R 5W 1R 5W 1R 5W 1R 5W 1R 5W 1R 5W 1R 5W 1R 5W 330R 1R 5W 1R 5W 10A 5A 5A 2R2 2R2 2R2 2R2 2R2 2R2 100R 4K7 4K7 BC556 BC546 BC546 2SC4793 2SC4793 2SA1837 REV. JULY 5, 2008 SCHEMATIC BY TODD A. JOHNSON 100nF 100V 1000F 100V Driver transistors mount on main heatsink with the output transistors Diode string must be thermally coupled to main heatsink This transistor needs Individual heatsink Notes & Tweaks: Output transistors are 2SA1943/2SC5200 or equivalent Driver 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 2N5401/5551 Output 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. 1H RadioFans.CN 收音机爱 好者资料库
