Enclosure not stated · 3 knobs
Schematic
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Parts list 90 rows
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Check before you build · 2 values the reader of this schematic was not sure of
- Q4: drawn '25K1845R', read as 2SK184 (rank suffix unclear)
- IC2: section A labeled M5216AL, sections B/C M5281AL
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 45 | ||||
| R1 | 1k | 1k | read from the schematic by eye | |
| R2 | 100k | 100k | read from the schematic by eye | |
| R3 | 330k | 330k | read from the schematic by eye | |
| R4 | 100k | 100k | read from the schematic by eye | |
| R5 | 10k | 10k | Q2 emitter; designator R5 is printed twice; read from the schematic by eye | |
| R5b | 1M | 1M | drawn as a second R5 (Q1 drain side); R6 otherwise missing; read from the schematic by eye | |
| R7 | 1M | 1M | read from the schematic by eye | |
| R8 | 100k | 100k | read from the schematic by eye | |
| R9 | 10k | 10k | read from the schematic by eye | |
| R10 | 1M | 1M | read from the schematic by eye | |
| R11 | 10k | 10k | read from the schematic by eye | |
| R12 | 22k | 22k | 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 | 10k | 10k | input series; designator R15 is printed twice; read from the schematic by eye | |
| R15b | 1M | 1M | drawn as a second R15 (Q4 gate to bias); R16 otherwise missing; read from the schematic by eye | |
| R17 | 1.2k | 1.2k | read from the schematic by eye | |
| R18 | 100 | 100 | 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 | 10k | 10k | read from the schematic by eye | |
| R22 | 1M | 1M | read from the schematic by eye | |
| R23 | 56k | 56k | read from the schematic by eye | |
| R24 | 1M | 1M | read from the schematic by eye | |
| R25 | 56k | 56k | Q7 collector; designator R25 is printed twice; read from the schematic by eye | |
| R25b | 1M | 1M | drawn as a second R25 (switch input); R26 otherwise missing; read from the schematic by eye | |
| R27 | 1.5k | 1.5k | read from the schematic by eye | |
| R28 | 10k | 10k | read from the schematic by eye | |
| R29 | 33k | 33k | read from the schematic by eye | |
| R30 | 56k | 56k | read from the schematic by eye | |
| R31 | 56k | 56k | read from the schematic by eye | |
| R32 | 15k | 15k | read from the schematic by eye | |
| R33 | 100k | 100k | read from the schematic by eye | |
| R34 | 10k | 10k | read from the schematic by eye | |
| R35 | 4.7k | 4.7k | read from the schematic by eye | |
| R36 | 330k | 330k | read from the schematic by eye | |
| R37 | 47k | 47k | read from the schematic by eye | |
| R38 | 12k | 12k | read from the schematic by eye | |
| R39 | 100k | 100k | read from the schematic by eye | |
| R40 | 56k | 56k | read from the schematic by eye | |
| R41 | 4.7k | 4.7k | read from the schematic by eye | |
| R42 | 5.6k | 5.6k | read from the schematic by eye | |
| R43 | 10k | 10k | read from the schematic by eye | |
| R44 | 100k | 100k | read from the schematic by eye | |
| R45 | 100k | 100k | read from the schematic by eye | |
| Capacitors 25 | ||||
| C1 | 0.027uF | 27n | IC2A out to Q1; designator C1 is printed twice; read from the schematic by eye | |
| C1b | 1uF | 1u | drawn as a second C1 (Q1 to Q2), electrolytic 50V; C3 otherwise missing; read from the schematic by eye | |
| C2 | 10uF | 10u | electrolytic 16V; read from the schematic by eye | |
| C4 | 10uF | 10u | electrolytic 16V (by IC1A; designator C4 also on 0.1uF below); read from the schematic by eye | |
| C4b | 0.1uF | 100n | drawn as a second C4 (R8/R10 node); C14 otherwise missing; read from the schematic by eye | |
| C5 | 1uF | 1u | electrolytic 50V; read from the schematic by eye | |
| C6 | 10uF | 10u | electrolytic 16V; read from the schematic by eye | |
| C7 | 10pF | 10p | read from the schematic by eye | |
| C8 | 0.047uF | 47n | read from the schematic by eye | |
| C9 | 100uF | 100u | electrolytic 16V; read from the schematic by eye | |
| C10 | 4.7uF | 4.7u | electrolytic 6.3V; read from the schematic by eye | |
| C11 | 10uF | 10u | electrolytic 16V; read from the schematic by eye | |
| C12 | 0.047uF | 47n | read from the schematic by eye | |
| C13 | 0.047uF | 47n | read from the schematic by eye | |
| C15 | 0.01uF | 10n | read from the schematic by eye | |
| C16 | 220pF | 220p | read from the schematic by eye | |
| C17 | 470pF | 470p | read from the schematic by eye | |
| C18 | 0.011uF | 11n | read from the schematic by eye | |
| C19 | 47uF | 47u | electrolytic 6.3V; read from the schematic by eye | |
| C20 | 1uF | 1u | electrolytic 50V, back to back with C21; read from the schematic by eye | |
| C21 | 1uF | 1u | electrolytic 50V; read from the schematic by eye | |
| C22 | 220pF | 220p | read from the schematic by eye | |
| C23 | 470pF | 470p | read from the schematic by eye | |
| C24 | 47uF | 47u | electrolytic 6.3V; read from the schematic by eye | |
| C25 | 47uF | 47u | electrolytic 6.3V; read from the schematic by eye | |
| Diodes 5 | ||||
| D1 | 1N4004 | 1N4004 | read from the schematic by eye | |
| D2 | 1SS133 | 1SS133 | drawn '155133'; read from the schematic by eye | |
| D3 | 1SS133 | 1SS133 | drawn '155133'; read from the schematic by eye | |
| D4 | 1N4004 | 1N4004 | read from the schematic by eye | |
| D5 | MTZ5.6B | MTZ5.6B | 5.6V zener; read from the schematic by eye | |
| Transistors 7 | ||||
| Q1 | 2SK118Y | 2SK118Y | JFET; read from the schematic by eye | |
| Q2 | 2SC2458GR | 2SC2458GR | NPN; read from the schematic by eye | |
| Q3 | 2SK118Y | 2SK118Y | JFET; read from the schematic by eye | |
| Q4 | 2SK184 | 2SK184 | JFET input buffer; drawn '25K1845R'; read from the schematic by eye | |
| Q5 | 2SC2458GR | 2SC2458GR | NPN, flip-flop; read from the schematic by eye | |
| Q6 | 2SA1048GR | 2SA1048GR | PNP, 5.5V supply; read from the schematic by eye | |
| Q7 | 2SC2458GR | 2SC2458GR | NPN, flip-flop; read from the schematic by eye | |
| ICs 4 | ||||
| IC1 | M5207L01 | M5207L01 | dual (IC1A/IC1B); read from the schematic by eye | |
| IC2 | M5281AL | M5281AL | IC2B/IC2C drawn M5281AL, but IC2A labeled M5216AL; read from the schematic by eye | |
| IC3 | M5281AL | M5281AL | read from the schematic by eye | |
| IC4 | M5281AL | M5281AL | read from the schematic by eye | |
| Potentiometers 3 | ||||
| Rate | B100K | B100k | Potentiometer | VR2; read from the schematic by eye |
| Wave | A100K | A100k | Potentiometer | VR1; read from the schematic by eye |
| Depth | B100K | B100k | Potentiometer | VR3; read from the schematic by eye |
| LEDs 1 | ||||
| D6 | LN-28RP | LN-28RP | Check LED; read from the schematic by eye | |