4 20 0 Rob Robinette 5F1M Champ Micro Schematic 1 Pad1 ROUND _1 Pad1 ROUND _1 Pad1 ROUND _1 Pad1 ROUND _1 Pad2 ROUND _1 Pad2 ROUND _1 Pad1 ROUND _1 V1A 12AY7 12AY7 NAME false DEFAULT NONE false V2B 12AU7 12AU7 NAME false DEFAULT NONE false V2A 12AU7 NAME false DEFAULT NONE false V1B 12AY7 12AY7 NAME false DEFAULT NONE false C2 Coupling 127 VALUE false Directional false ABOVE _63V false 820R 2W 127 NAME false Directional false ABOVE HALF C7 Cathode Bypass 127 VALUE false Directional false ABOVE _63V false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false GND1 DEFAULT DEFAULT R1 Grid Leak 127 VALUE false Directional false ABOVE HALF GND1 DEFAULT DEFAULT 127 NAME false Directional false ABOVE true 127 NAME false Directional false ABOVE false GND1 DEFAULT DEFAULT Dot1 R4 Load 127 VALUE false Directional false ABOVE HALF R3 Cathode 127 VALUE false Directional false ABOVE HALF C1 Cathode Bypass 127 VALUE false Directional false ABOVE _63V false GND1 DEFAULT DEFAULT R8 Load 127 VALUE false Directional false ABOVE HALF J1 127 NAME false false C6 Coupling 127 VALUE false Directional false ABOVE _63V false Dot2 D1 127 VALUE false Directional false ABOVE 1N4007 D1 127 VALUE false Directional false BELOW 1N4007 J1 127 NAME false false 127 NAME false Directional false ABOVE true 127 NAME false Directional false ABOVE false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false 127 NAME false Directional false ABOVE false J1 127 NAME false false J1 127 NAME false false 127 NAME false Directional false ABOVE true J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false C3 127 VALUE false Directional false ABOVE _63V false C3 127 VALUE false Directional false ABOVE _63V false 470 2W 127 NAME false Directional false ABOVE HALF GND1 DEFAULT DEFAULT J1 127 NAME false false J1 127 NAME false false ELL1 127 J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false R4 127 VALUE false Directional false ABOVE HALF 100R 1/2W 127 NAME false Directional false ABOVE HALF J1 127 NAME false false Dot2 J1 127 NAME false false Dot3 Dot3 J1 127 NAME false false J1 127 NAME false false ELL1 127 J1 127 NAME false false J1 127 NAME false false ELL2 127 J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false GND1 DEFAULT DEFAULT R7 Cathode 127 VALUE false Directional false ABOVE HALF R2 Grid Stopper 127 VALUE false Directional false ABOVE HALF 1MA Volume 127 NAME false Directional false ABOVE HALF J1 127 NAME false false J1 127 NAME false false GND1 DEFAULT DEFAULT W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false GND1 DEFAULT DEFAULT 1MA MV 127 NAME false Directional false ABOVE HALF GND1 DEFAULT DEFAULT J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false W1 127 TWO true -1 _30 false GND1 DEFAULT DEFAULT W1 127 TWO true -1 _30 false R8 Load 127 VALUE false Directional false ABOVE HALF GND1 DEFAULT DEFAULT W1 127 TWO true -1 _30 false GND1 DEFAULT DEFAULT W1 127 TWO true -1 _30 false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false W1 127 TWO true -1 _30 false J1 127 NAME false false W1 127 TWO true -1 _30 false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false Feedback 127 VALUE false Directional false ABOVE HALF J1 127 NAME false false J1 127 NAME false false GND1 DEFAULT DEFAULT GND1 DEFAULT DEFAULT GND1 DEFAULT DEFAULT D1 127 VALUE false Directional false ABOVE 1N4007 D1 127 VALUE false Directional false ABOVE 1N4007 W1 127 TWO true -1 _30 false L1 B+1 false CENTER CENTER DEFAULT L1 B+2 false CENTER CENTER DEFAULT L2 Parallel Power false LEFT CENTER DEFAULT L2 Output false CENTER CENTER DEFAULT L2 Transformer false CENTER CENTER DEFAULT L2 Driver false LEFT CENTER DEFAULT L2 Power false CENTER CENTER DEFAULT L2 6.3v Filament false CENTER CENTER DEFAULT L2 Rectifier false CENTER CENTER DEFAULT L1 B+ 370V false CENTER CENTER DEFAULT L1 B+1 365v false CENTER CENTER DEFAULT L2 Fuse 1A false CENTER CENTER DEFAULT L2 Slow Blow false CENTER CENTER DEFAULT L2 Power false LEFT CENTER DEFAULT L2 Hot Black false CENTER CENTER DEFAULT L2 Neutral White false CENTER CENTER DEFAULT L2 Hot false CENTER CENTER DEFAULT L2 Neutral false CENTER CENTER DEFAULT L2 Artificial Center Tap (only required if no 6.3v center tap) false LEFT CENTER DEFAULT L2 5F1M "Champ Micro" Amplifier false CENTER CENTER DEFAULT L2 V2.8 designed by RobRobinette.com false RIGHT CENTER DEFAULT L2 Power Plug false CENTER CENTER DEFAULT L2 Ground Green false LEFT CENTER DEFAULT L2 240-0-240V false CENTER CENTER DEFAULT L2 25K:8 Ohm false CENTER CENTER DEFAULT L1 B+2 false CENTER CENTER DEFAULT L2 Preamp false RIGHT CENTER DEFAULT L2 Signal In false LEFT CENTER DEFAULT L2 Bright Hi false LEFT CENTER DEFAULT L2 8 Ohm Speaker Out false LEFT CENTER DEFAULT L2 Headphone Out false LEFT CENTER DEFAULT L1 Input Resistor false CENTER CENTER _270 L1 Boost Cap false CENTER CENTER _270 L1 Cathode Resistor false CENTER BOTTOM _270 L1 Cathode Resistor false CENTER CENTER _270 L1 Bypass Cap false CENTER CENTER _270 L1 Cathode Resistor false CENTER CENTER _270 L1 Load false LEFT CENTER _270 L1 Load false LEFT CENTER _270 L1 Master<br>Volume false LEFT TOP DEFAULT L1 Grid Stopper false LEFT CENTER DEFAULT L1 Coupling false LEFT CENTER DEFAULT L1 Coupling false LEFT CENTER DEFAULT L1 Dropping false CENTER BOTTOM DEFAULT L1 Filter Cap false CENTER CENTER _270 L1 Filter Cap false CENTER CENTER _270 L1 2 false CENTER TOP DEFAULT L1 1 false LEFT TOP DEFAULT L1 3 false RIGHT TOP DEFAULT L1 6 false LEFT TOP DEFAULT L1 7 false CENTER TOP DEFAULT L1 8 false RIGHT TOP DEFAULT L1 6 false LEFT TOP DEFAULT L1 8 false RIGHT TOP DEFAULT L1 7 false CENTER TOP DEFAULT L1 1 false LEFT TOP DEFAULT L1 2 false CENTER TOP DEFAULT L1 3 false RIGHT TOP DEFAULT L2 Switch false LEFT CENTER DEFAULT L2 PT Hammond 270AX 240-0-240V false LEFT CENTER DEFAULT L2 OT Fender Style 25K:8 ohm Reverb Transformer Such As Hammond 1750A false LEFT CENTER DEFAULT L2 Transformer false CENTER CENTER DEFAULT L1 Boost Switch false LEFT CENTER DEFAULT L1 Feedback false CENTER CENTER DEFAULT L1 Feedback Switch false LEFT CENTER DEFAULT L1 Optional false LEFT CENTER DEFAULT L1 Optional false LEFT CENTER DEFAULT L1 Optional false LEFT CENTER DEFAULT L2 To Power Tube Cathode Resistor false LEFT CENTER DEFAULT Pad3 ROUND _1 C1 127 VALUE false Directional false ABOVE _63V false 39K 2W 127 NAME false Directional false ABOVE HALF GND2 DEFAULT DEFAULT J2 127 NAME false false R9 Grid Stopper 127 VALUE false Directional false ABOVE HALF Attenuator 127 VALUE false Directional false ABOVE HALF GND1 DEFAULT DEFAULT W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false L3 B+2 240v false CENTER CENTER DEFAULT L4 Dropping false CENTER BOTTOM DEFAULT L5 Filter Cap false CENTER CENTER _270 L1 Grid Stopper false LEFT CENTER _270 L1 Attenuator false LEFT CENTER _270 L1 Attenuating<br>Voltage<br>Divider false CENTER CENTER DEFAULT