b3sch-a 电路图.pdf

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1、Date: December 11, 1995Sheet 1of 1 SizeDocument NumberREV E- - -1.0 Title B3/C3 SCHEMATIC F C22 24-90PF R37 270K C17 680PFC24 82PF C23 .033 VOLUMESOFT NORMAL E C16 .033 RADIO-PHONO R29 330K EXPRESSION CONTROL +280V C2 39PF 1 6 2 7 5 V1 6AU6 C5 .01 R9 820K TO BALANCE CHANNELS R10 3.9M C8 30PF C15 51P

2、F R10 - SELECT AT TEST 145V 130V R8 470K OFF ON OFF ON VIBRATO GREAT VIBRATO SWELL R2 1M C1 470PF R4 1.8M R5 10M R6 47K C3 100PF A T2 MATCHING TRANSFORMER UPPER PEDAL DRAWBARS TYPICAL GROUP OF UPPER (SWELL) MANUAL DRAWBARS TYPICAL GROUP OF LOWER (GREAT) MANUAL DRAWBARS T1 MATCHING TRANSFORMER (LOWER

3、 AND PEDAL) 23 6 5 B R1 3.9M R3 270K (FROM V2) R13 4.7M C7 24PF R7 2.2M C4 .33 R28 270K R27 1.8M +1.7V (FROM V2) 2 1 3 V4A 12AX7 C11 .0047 60V +280V +1.7V C18 220PF C20 220PF R30 1.8M R32 1.8M R31 68K R33 68K R34 15M 60PF/SEC R35 3.3M 7 6 8 V4B 12AX7A R39 330K R38 390K R36 330K 140V +1.7V (FROM V2)

4、+280V G G BN C25 .001 T3 C26 30/25R42 1200 R41 100K 12V 7 6 8 V3B 12BH7A +290V R40 300K TONE 285V C19 .0022 C21 .001 D 7 6 8 V3B 12BH7 R19 470K C12 .0047 R21 1M R22 820 R25 100 C13 1.0 C +290V 130V 100V 95V PERCUSSION SIGNAL R14 10M R15 2.7M R12 270K R16 470K C8 .0001 R17 1.2K 1 6 2 7 5 V2 6AU6 60V

5、R20 2.2M UPPER MANUAL PRESET PANEL LOWER MANUAL PRESET PANEL 0 1 2 3 4 5 6 7 8 UPPER MANUAL LOWER MANUAL BUSBARS 91 (GEN 49-91) BUSBARS 23 6 5 C10 .33 +1.7V (TO V1,V4) C9 30/25 R62 100K R23 22K R24 22K C32 390PF C34 .001 R63 390K C35 150PF +280V R44 22K VIBRATO SWITCH CLOSED IN V1/C1 CLOSED IN V1,V2

6、,V3 CLOSED IN V2/C2 CLOSED IN V3/C3 SCANNER 18171615141312111098 7654321 C33 .0033 7 R61 33K +205 +205 2 1 3 V7A 12AU7 C31 .33 T5 T6 +37V 200V 7 6 8 V7B 12AU7 6 7 1 V5 6C4 T4 C29 100PF C30 25/25 C28 .047 R49 2.2K R48 470K R47 47K 85V H THIRD SECOND OFF ON PERCUSSION 1 44 (GEN 44-48) 4 1 (GEN 1-43) G

7、ENERATOR OUTPUT TERMINALS R50 22 R51 4.7K SOFT PERCUSSION VOLUME J K 25V R58 4.7M R57 1.5M FAST PERC. DECAY PERCUSSION CUTOFF 200V L M 6 7 1 V6 6C4 SLOW R5582K R5622K +33V L1L2 R65 27K C37 .004 C38 .004 R66 68K R67 56K R68 150K R60 30K R59 120K +33V L3L5L6L4 C39 .004 C40 .004 C41 .004 R70 150K R72 1

8、80K R74 180K R76 180K R69 39K R71 33K R73 18K R75 12K L13L12L11L10L9L8L7 C42 .004 C43 .004 C44 .004 C45 .004 C46 .004 C47 .004 C48 .004 L18L17L16L15L14 R77 15K C49 .004 C50 .004 C51 .004 C52 .004 C53 .004 C54 .001 T5 T4 T6 TOP VIEW VIBRATO DELAY LINE EXPRES- SION T3 C56 C57 C58 T1 C9,C26 C59,C60 1 2

9、 NINE CONTACTS AND CONNECTIONS SAME AS B EXCEPT THAT UNDER A# ADJUST KEY ARE THESE THREE DRAWBAR WIRES NINE CONTACTS UNDER TYPICAL PLAYING KEY. GO DIRECTLY TO KEY CONTACTS. 3 NOTES: C60 50/300 R97 4500 R98 7500 +37V +205V +290V 335V R94 4.7K 6.0V HEATERS T7 NORMAL OFF ONBL R46 12K START SWITCH RUN S

10、WITCH R855 R84 5 R80 10 R8247 R8110 8 CONTACTS UNDER TYPICAL PEDAL KEY TONE GENERATOR L20 R83 470 PEDAL SWITCH BUSBARS TERMINALS TO GENERATOR (SEE PEDAL WIRING CHART) (1000) HEATER (IF USED) R88 600 R8620 R87 250 STARTING MOTOR SYNCHRONOUS MOTOR GY 117VAC 50/60HZ TO GND 340VRMS PINS 1,6 375V R91 900

11、 C57 40/400 C56 40/450 7 3 4 1 6 V8 6X4 R95 4.7K C58 30/350 C56 10/350 R100 2.7K R101 2.7K R96 4.7K R99 180 +33V +280V NINE CONTACTS AND CONNECTIONS UNDER B ADJUST KEY. 4 5 NINE CONTACTS AND CONNECTIONS UNDER TYPICAL PRESET KEY. PRESET PERCUSSION SWITCH UNDER B ADJUST KEY ONLY. 6 TO GENERATOR TERMINALS (SEE MANUAL WIRING CHART) 7 R61 SELECTED AT TEST TO BALANCE THE CHANNELS. V8 V3 CONTROL V5V6V2V1V4V7 RadioFans.CN 收音机爱 好者资料库