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Pete Cornish Input Buffer
Based on the Cornish Buffer· 5 other boards clone it
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From the vendor
Pete Cornish's high-impedance, unity-gain class A input buffer, which sits at the input of his pedals: a single BC549 emitter follower with a bootstrapped bias network and a 10M input resistor. The post gives it so it can be put in front of the Light Drive to make a full SS-2.
Schematic
The schematic is in the post. Open it at Revolution Deux. No KiCad fragment has been drawn for this circuit yet.
Parts list 13 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| R1 | 10M | 10M | read from the schematic by eye | |
| R2 | 1K | 1k | read from the schematic by eye | |
| R3 | 120K | 120k | read from the schematic by eye | |
| R4 | 200K | 200k | read from the schematic by eye | |
| R5 | 120K | 120k | read from the schematic by eye | |
| R6 | 7.5K | 7.5k | read from the schematic by eye | |
| R7 | 20K | 20k | read from the schematic by eye | |
| R8 | 51 | 51 | read from the schematic by eye | |
| Capacitors 4 | ||||
| C1 | 100n | 100n | read from the schematic by eye | |
| C2 | 1n | 1n | read from the schematic by eye | |
| C3 | 4.7u | 4.7u | electrolytic; read from the schematic by eye | |
| C4 | 22u | 22u | electrolytic; read from the schematic by eye | |
| Transistors 1 | ||||
| Q1 | BC549 | BC549 | read from the schematic by eye | |
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