revibe 电路图 维修原理图.pdf

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1、Accutronics Reverb Assembly 9AB3C1B C 1.5K 100K 25F 1 2 3 1.5K 56k Preamp V1B 12AX7 6 7 8 DWELL 250K-L .01 .1 1M 1.5K 6 7 8 C 10K C 33K .0022 68K 220K 8 5 3 4 1K 3W 25F 220F 1.5K 220K 100K .1 TONE 50K-L REVERB FOOTSWITCH 1 2 3 Recovery amp V1A 12AX7 SPEED 3M-RA 8 7 6 470K 1M 1M .01.01 .022 100K 4.7M

2、 INTENSITY 10M-RA .047 .0047 A .01 FAST SLOW LED 1.7 Vibrato Oscillator V5B - 12AX7 .01 5.1M 1.5K 1 A 2 3 VIBRATO Footswitch .047 470K .22 .047 1M 1M1M 2.2K 2.2F 250pF 220K 470K 220K .01 .0047 100K B 100K B .022 220K 220K22K 470K470K 022905 .01 250pF MIX 500K-A 220K C A Modulator V4B 12AX7 8 7 6 3 2

3、 1 100K .001 1M .047 Note. All voltages measured with Fluke 87V. Line input set to 120VAC. All controls set max CCW. Tremolo oscillator was disabled for steady readings on V5. 221 122 1.9 00 1.9 126 320 330 23 0 1.7 0 259259 259 330 259 170 1.3 0 304 252 2.4 0 250 0 228 1.5 0 187 0 6.3VACrms(17.8Vpp

4、) with SPEED set for 5Hz and INTENSITY set max CCW REVIBEbySluckey Based on 6G15 reverb unit and 6G12 vibrato circuit. 330 100/100F100/100F 125C3A 4.7K/3W10K/3W C 259 B 304 A 330 3.15-0-3.15 260VAC 100mA V5V2V1 44 99 55 V4 4 9 5 NEUTRAL LINE 1 AMP SLO BLO POWER Weber WRVBPT 4 9 5 120Vac 7 2 V3 304 P

5、ower Supply nodes rearranged. Footswitch moved to top of Intensity pot to allow the oscillator to run continuously. This provides instant on/off. Added FAST/SLOW frequency range switch. 5.1M resistor paralleled with Speed pot to limit low end of frequency range. C27 changed to .047F and C18 changed

6、to .01F because they were attenuating the higher LFO frequencies too much. V5A and V5B positions swapped to work better with my layout. Removed C20 bypass cap from V5A cathode. Replaced C17/R29 with yellow LED. Pure eye candy! Replaced R60 with 56K to lower the gain of V1-B and prevent overdriving V

7、4. Added LEVEL pot to adjust signal input to V4. Replaced R45 with 2.2K to lower the gain of V4 and prevent distortion of hot input signals. Replaced R62/R63 voltage divider with 220K/15K to provide unity gain from input to output jacks. List of Changes(refer to original Hoffman schematic) 0 180 Thi

8、s unit was originally built exactly IAW Hoffmans Revibe schematic. I later made the following changes. Normal “Dry” signal Hi pass Lo pass Vibrato signal Vibrato Inverter V5A - 12AX7 Modulator V4A 12AX7 Preamp V2 - 12AT7 Power amp V3 6V6 Use red or yellow LED rated for 1.7v to 2.0v 20mA 84VACrms Rev

9、erb signal Vibrato oscillator signal (3Hz to 10Hz) 220K/3W 332 DC voltages for V5B measured with top of SPEED pot grounded to disable oscillator. LEVEL 500K-A 收音机爱好者资料库 Ra d i o Fa n s .CN 4 5 6 7 8 1 2 3 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 125A35A OT REV FS Tone

10、50K-L T S G Reverb Level 500K-A TS GIntensity 10M-RA Speed 3M-RA Dwell 250K-L Slow/Fast Input Output + + 250F 50V .01F 400v 250p 0.1F 400v .01F 630v .0022F 630v + + 22F .022F 630v 250p .01F 630v .0047F 630v C 0.1F 400v + + 22F 0.047F 250v 0.047F 250v .047F 400v 0.22F 400v .01F 400v .01F 400v .022F 4

11、00v VIB FS LED A REV Return + + 2.2F VIB FS REV Send B .0047F 630v .01F 630v HT HT 6.3 6.3 B+ + AC - AC .01F 400v .047F A RG 316 .001F 630v V5V4 V3 V2V1 Vibrato Level 500K-A 收音机爱好者资料库 Ra d i o Fa n s .CN Turret - drill size is 3/32 Hole for wire pass thru drill size to fit Standoff drill size to fit

12、 Dashed lines are underboard jumpers INSTRUCTIONS FOR PRINTING DRILL GUIDE NOTE This drawing contains layers. Turn off all layers except instructions, turrets, jumpers, screws, and pass-thru holes. Board size is 3 1/8 X 12. Print two copies of this drill guide FULL SIZE on legal sized paper. One cop

13、y will be used as a drill guide. The other copy will be used for installing jumpers. Measure the board length of the printout to verify it is 12. Attach to blank board using double sided carpet tape. Use a center punch to put a mark at the cross hairs of each turret, standoff, and hole. Use a 3/32 d

14、rill bit to drill all holes. Then enlarge holes as needed for screws and wire pass thru. DRILL GUIDE 收音机爱好者资料库 Ra d i o Fa n s .CN 125C3A CHOKE A C B WRVBPT to filament string FUSE connector 1A not used B+ + AC - AC HT HT Filament artificial center tap not used 100/100F100/100F 125C3A 4.7K/3W10K/3W

15、C 258 B 303 A 329 V3 Reverb driver V5 trem osc/inv V4 Trem modulator V1 & V2 reverb 3.15-0-3.15 260VAC 100mA V5V2V1 44 99 55 V4 4 9 5 NEUTRAL LINE 1 AMP SLO BLO POWER Weber WRVBPT 4 9 5 120Vac 7 2 V3to V3 pin 4 A B C line cord 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 7 8 9 4

16、 5 6 7 8 1 2 3 1.001.501.881.504.38 125A35A OT 2.80 125C3A CHOKE 2.5 x 1.5 2.001.75 WRVBPT 3.56 0.50 0.50 Chassis size 17 x 6 x 2 1.881.13 3.00 1.13 0.63 + + 250F 50V 0.1F 400v .01F 630v .0022F 630v + + 22F .022F 630v 250p .01F 630v .0047F 630v C 0.1F 400v + + 22F 0.047F 250v 0.047F 250v + + 22F + +

17、 22F .001F 630v .047F 400v 0.22F 400v .01F 400v .01F 400v .022F 400v VIB FS + + 2.2F B + AC - AC .0047F 630v .033F 630v A 1.00 2.37 *BOTTOM VIEW*BOTTOM VIEW* 1.001.501.881.504.38 OT CHOKE 2.001.75 Chassis size 17 x 6 x 2 3.00 1.13 0.63 Reverb Tank is 16.75 X 4.3125 Chassis size 17 x 6 x 2 *TOP VIEW*

18、TOP VIEW* 17.00 1.501.251.251.251.251.251.251.251.25 DWELLINPUTTONEOUTPUTLEVELINTENSITYRANGESPEED 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 REVERBVIBRATO 6G15 reverb unit and 6G12 harmonic vibrato Luckeys 5 6 7 8 9 10 0 1 2 3 4 2.50 LEVEL 5 6 7 8 9 10 0 1 2 3 4 1.25 1.751.501.251.25 Reverb F/SVibrato F/S 1.501.25 Fuse Power cord1A SLOWPowerIndicator 1.25 Center line REAR PANEL 1.25