Enclosure not stated
Op amp feedbacker
- Category
- Ring Mod / Synth· Guitar Synth and Misc Signal Shapers
- Price
- see vendor
- Tags
- Guitar Synth and Misc Signal Shapers
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 12 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 2 values the reader of this schematic was not sure of
- 250k pot: author says 'about 250k'
- feedback resistors and caps 1/2: no values drawn
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 2 | ||||
| ×1 | 1k | 1k | output series resistor; read from the schematic by eye | |
| ×2 | ? | ? | feedback network resistors (to ground via cap, and feedback), no values drawn; read from the schematic by eye | |
| Capacitors 6 | ||||
| ×1 | .068uF | 68n | input; read from the schematic by eye | |
| ×1 | 1uF | 1u | output; read from the schematic by eye | |
| ×1 | .22uF | 220n | positive-feedback cap; read from the schematic by eye | |
| Cap 1 | ? | ? | feedback high roll-off cap, no value drawn; read from the schematic by eye | |
| Cap 2 | ? | ? | larger roll-off cap in series with LDR, no value drawn; read from the schematic by eye | |
| ×1 | ? | ? | cap in feedback-to-ground leg, no value drawn; read from the schematic by eye | |
| ICs 1 | ||||
| ×1 | ? | ? | op amp, no part number given; read from the schematic by eye | |
| Opto 1 | ||||
| ×2 | LDR | LDR | one in series with cap 2, one on the positive-feedback leg; LED driver not shown; read from the schematic by eye | |
| Potentiometers 1 | ||||
| ×1 | 250k | 250k | Potentiometer | positive feedback amount; 'I would say about 250k'; read from the schematic by eye |
| Switches 1 | ||||
| ×1 | SPST | SPST | momentary, onboard; read from the schematic by eye | |