Enclosure not stated · 3 knobs
Rocktek Chorus
- Category
- Vibrato / Chorus· Chorus
- Price
- see vendor
- Tags
- Chorus
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 98 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
- Q3: no part number; symbol reads as PNP
- IC3: drawn 2940D on one section and 2904D on the other; read as 2904
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 45 | ||||
| R1 | 1.1K | 1.1k | read from the schematic by eye | |
| R2 | 560K | 560k | read from the schematic by eye | |
| R3 | 10K | 10k | read from the schematic by eye | |
| R4 | 1.1K | 1.1k | read from the schematic by eye | |
| R5 | 10K | 10k | read from the schematic by eye | |
| R6 | 47K | 47k | read from the schematic by eye | |
| R7 | 82K | 82k | read from the schematic by eye | |
| R8 | 330 | 330 | read from the schematic by eye | |
| R9 | 10K | 10k | read from the schematic by eye | |
| R10 | 22K | 22k | read from the schematic by eye | |
| R11 | 82K | 82k | read from the schematic by eye | |
| R12 | 10K | 10k | read from the schematic by eye | |
| R13 | 10K | 10k | read from the schematic by eye | |
| R14 | 10K | 10k | read from the schematic by eye | |
| R15 | 100K | 100k | read from the schematic by eye | |
| R16 | 47K | 47k | read from the schematic by eye | |
| R17 | 10K | 10k | read from the schematic by eye | |
| R18 | 10K | 10k | read from the schematic by eye | |
| R19 | 10K | 10k | read from the schematic by eye | |
| R20 | 10K | 10k | read from the schematic by eye | |
| R21 | 22K | 22k | read from the schematic by eye | |
| R22 | 33K | 33k | read from the schematic by eye | |
| R23 | 110 | 110 | read from the schematic by eye | |
| R25 | 47K | 47k | read from the schematic by eye | |
| R26 | 1.1K | 1.1k | read from the schematic by eye | |
| R27 | 220 | 220 | footswitch side; a second R27 (100K) is at the output; read from the schematic by eye | |
| R27b | 100K | 100k | printed R27, clashing with the 220 R27 at the footswitch; read from the schematic by eye | |
| R29 | 100K | 100k | read from the schematic by eye | |
| R30 | 10K | 10k | read from the schematic by eye | |
| R31 | 10K | 10k | read from the schematic by eye | |
| R32 | 220K | 220k | read from the schematic by eye | |
| R33 | 330K | 330k | read from the schematic by eye | |
| R35 | 8.2K | 8.2k | read from the schematic by eye | |
| R36 | 100K | 100k | read from the schematic by eye | |
| R38 | 2.2K | 2.2k | read from the schematic by eye | |
| R39 | 1M | 1M | flip-flop output to C24; read from the schematic by eye | |
| R39b | 1M | 1M | printed R39, clashing; the one from the footswitch node to ground; read from the schematic by eye | |
| R40 | 390 | 390 | read from the schematic by eye | |
| R41 | 470K | 470k | read from the schematic by eye | |
| R42 | 4.7K | 4.7k | read from the schematic by eye | |
| R43 | 10K | 10k | read from the schematic by eye | |
| R44 | 10K | 10k | read from the schematic by eye | |
| R45 | 560K | 560k | read from the schematic by eye | |
| R46 | 1M | 1M | read from the schematic by eye | |
| R47 | 10K | 10k | read from the schematic by eye | |
| Capacitors 30 | ||||
| C1 | 0.1uF | 100n | read from the schematic by eye | |
| C2 | 1uF | 1u | electrolytic; read from the schematic by eye | |
| C3 | 0.1uF | 100n | read from the schematic by eye | |
| C4 | 0.01uF | 10n | read from the schematic by eye | |
| C5 | 47pF | 47p | read from the schematic by eye | |
| C6 | 1uF | 1u | electrolytic; read from the schematic by eye | |
| C7 | 0.015uF | 15n | read from the schematic by eye | |
| C8 | 370pF | 370p | read from the schematic by eye | |
| C9 | 0.0056uF | 5.6n | read from the schematic by eye | |
| C10 | 100pF | 100p | drawn 100p; read from the schematic by eye | |
| C11 | .01uF | 10n | read from the schematic by eye | |
| C12 | 470pF | 470p | read from the schematic by eye | |
| C13 | 22uF | 22u | electrolytic; read from the schematic by eye | |
| C14 | 1uF | 1u | read from the schematic by eye | |
| C15 | 0.015uF | 15n | read from the schematic by eye | |
| C16 | 0.015uF | 15n | read from the schematic by eye | |
| C17 | .001uF | 1n | read from the schematic by eye | |
| C18 | 0.01uF | 10n | read from the schematic by eye | |
| C19 | 1uF | 1u | read from the schematic by eye | |
| C20 | 1uF | 1u | read from the schematic by eye | |
| C22 | 100pF | 100p | read from the schematic by eye | |
| C23 | 1uF | 1u | electrolytic; read from the schematic by eye | |
| C24 | .047uF | 47n | read from the schematic by eye | |
| C25 | 0.01uF | 10n | read from the schematic by eye | |
| C26 | 0.1uF | 100n | read from the schematic by eye | |
| C27 | 7uF | 7u | electrolytic, as drawn; read from the schematic by eye | |
| C28 | .0047uF | 4.7n | read from the schematic by eye | |
| C29 | 0.1uF | 100n | read from the schematic by eye | |
| C30 | 47pF | 47p | read from the schematic by eye | |
| C31 | 330uF | 330u | electrolytic; read from the schematic by eye | |
| Diodes 6 | ||||
| D1 | 1N4148 | 1N4148 | read from the schematic by eye | |
| D2 | 4.7V | 4V7 | zener; read from the schematic by eye | |
| D3 | 1N4148 | 1N4148 | read from the schematic by eye | |
| D4 | 1N4148 | 1N4148 | read from the schematic by eye | |
| D5 | 1N4148 | 1N4148 | read from the schematic by eye | |
| D6 | 1N4148 | 1N4148 | read from the schematic by eye | |
| Transistors 7 | ||||
| Q1 | ? | ? | NPN, no part number; read from the schematic by eye | |
| Q2 | ? | ? | NPN, no part number; read from the schematic by eye | |
| Q3 | ? | ? | PNP by its symbol, no part number; read from the schematic by eye | |
| Q4 | ? | ? | NPN, no part number; read from the schematic by eye | |
| Q5 | ? | ? | NPN, no part number; read from the schematic by eye | |
| Q6 | K272 | 2SK272 | JFET switch, drawn K272; read from the schematic by eye | |
| Q7 | K272 | 2SK272 | JFET switch, drawn K272; read from the schematic by eye | |
| ICs 5 | ||||
| IC1 | 4558 | 4558 | dual op amp; read from the schematic by eye | |
| IC2 | 4027 | 4027 | dual JK flip-flop, bypass latch; read from the schematic by eye | |
| IC3 | 2904 | 2904 | dual op amp, LFO; drawn 2940D on IC3A and 2904D on IC3B; read from the schematic by eye | |
| IC4 | MN3207 | MN3207 | BBD; read from the schematic by eye | |
| IC5 | MN3102 | MN3102 | BBD clock; read from the schematic by eye | |
| Potentiometers 3 | ||||
| Tone | ? | ? | Potentiometer | VR1, no value drawn; read from the schematic by eye |
| Depth | ? | ? | Potentiometer | VR2, no value drawn; read from the schematic by eye |
| Rate | ? | ? | Potentiometer | VR3, no value drawn; read from the schematic by eye |
| Trimmers 1 | ||||
| RT1 | 100K | 100k | read from the schematic by eye | |
| LEDs 1 | ||||
| LED1 | LED | LED | Chorus On indicator; read from the schematic by eye | |