Cornford_hellcat 电路图 维修原理图.pdf

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1、68 k 1M 1k5 2.2uF 100v 220k 100pF 2k7 100k100k 4.7nF 2.2nF .022uF 470k 220k 470pF 68k 220pF .1uF .033uF 250k lin 250k log 22k 1M 1M 1k5 100k 47k .1uF 1M 1K5 220k To power amp Effects send and return Input sockets v1a v1bv2av2b v3a v3b Vintage channel volume G GFF EE .033uF .022uF To Reverb Input All

2、 resistors are w unless otherwise noted. All caps 400v min. unless otherwise noted. 25k lin 1k5 1k5 1M log 1M log 220k SPCO Relay 470pF 470k 470k 68 k 68 k 680k 220k 5 Volts To Footswitch Jack Socket 250k log 250k log DPCO Relay 5 Volts 1k5 To Footswitch Jack Socket To Mute Circuit .033 uF Red LED 1

3、00k 1k5 Green LED 1N4007 1N4007 Mute Point Cornford Hellcat Preamp and Effects Loop 1nF 10 W 47uF 450V 10 W 47uF 450V Issue: Project: Drawing No: Title: Date: Drawn By: Issue:Description of changes:. . . . . . A B C D E 123456 E D C B A 123456 A MK 03/08/11 Hellcat Schematic 收音机爱好者资料库 Ra d i o Fa n

4、s .CN Cornford Hellcat Reverb Circuit All resistors are w unless otherwise noted. All caps 400v min. unless otherwise noted. Input to Reverb from Treble Wiper Issue: Project: Drawing No: Title: Date: Drawn By: Issue:Description of changes:. . . . . . A B C D E 123456 E D C B A 123456 330k 3.3k 1.5K

5、Reverb tank Reverb Transformer v5b v5a 2.2uF 100v 2.2uF 100v 2.2nF To Master Volumes 100k 4n7 1M log Ring and sleeve of stereo f/switch jack 470k 470pF E C A MK 03/08/11 Hellcat Schematic 收音机爱好者资料库 Ra d i o Fa n s .CN Input from Master Volumes 150k Cornford Hellcat Power Amp Section All resistors ar

6、e w unless otherwise noted. All caps 400v min. unless otherwise noted. Issue: Project: Drawing No: Title: Date: Drawn By: Issue:Description of changes:. . . . . . A B C D E 123456 E D C B A 123456 100K100K 100pF 1M 1M .033uF .033uF10K 10K 100 ohm 1W 100 ohm 1W 68 ohm 7W 100 uF 63V .1uF Output Transf

7、ormer 16 ohm 8 ohm 4 ohm Speaker Outputs Speaker Impedance Selector C B+ D V6 & V7 EL 84 6BQ5 V8 & V9 EL84 6BQ5 V4 a & b .022uF 220k 220k 10k 4k7 To 8 Ohm Tap 470R A MK 03/08/11 Hellcat Schematic 收音机爱好者资料库 Ra d i o Fa n s .CN Cornford Hellcat Power Supply Mains inlet DPST Mains Switch Mains Transfor

8、mer 50+50uF Dual Section 500 Volt Electrolytic 470 ohm 3W 2k2 3W10k 3W T 500 m. A. DPST Standby Switch B+C 4x 1N4007 2200uF 16v Dotted lines indicate parallel wiring for 115 volt operation Mains fuse is T2A for 115v and T1A for 230v Br Gry Or Blu Br Blu 220k 2W For 230 Volt operation wire orange and

9、 grey wires together for series connection 7805 4x 1N4007 All resistors are w unless otherwise noted. All caps 400v min. unless otherwise noted. 5 Volt Supply 50+50uF Dual Section 500 Volt Electrolytic DE Issue: Project: Drawing No: Title: Date: Drawn By: Issue:Description of changes:. . . . . . A B C D E 123456 E D C B A 123456 A MK 03/08/11 Hellcat Schematic 6.3vac To all valve heaters 265vac 12vac CT Cornford Hellcat Mute Circuit 5 Volts 220k .033 uF Mute signal from preamp relay Mute Point 2N5462 MAC97 All resistors are w unless otherwise noted. All caps 400v min. unless otherwise noted.