Enclosure not stated · 2 knobs
PAIA 2720-5 Control Oscillator and Noise Source
- Category
- Ring Mod / Synth· Oscillators LFOs and Signal Generators
- Controls
- Freq · Output Attenuation
- Price
- see vendor
- Tags
- Oscillators LFOs and Signal Generators
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 41 rows
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Check before you build · 1 value the reader of this schematic was not sure of
- C13: value reads 20 or 30 (uF, 10V)
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 18 | ||||
| R1 | 82K | 82k | read from the schematic by eye | |
| R2 | 3.9MEG | 3.9M | read from the schematic by eye | |
| R3 | 1K | 1k | read from the schematic by eye | |
| R4 | 15K | 15k | read from the schematic by eye | |
| R5 | 15K | 15k | read from the schematic by eye | |
| R6 | 680 | 680 | read from the schematic by eye | |
| R8 | 1MEG | 1M | read from the schematic by eye | |
| R9 | 1MEG | 1M | read from the schematic by eye | |
| R10 | 100K | 100k | read from the schematic by eye | |
| R11 | 4.7K | 4.7k | read from the schematic by eye | |
| R12 | 150K | 150k | read from the schematic by eye | |
| R13 | 27K | 27k | read from the schematic by eye | |
| R14 | 6.8K | 6.8k | read from the schematic by eye | |
| R15 | 2.2K | 2.2k | read from the schematic by eye | |
| R16 | 470 | 470 | read from the schematic by eye | |
| R18 | 470K | 470k | read from the schematic by eye | |
| R19 | 470K | 470k | read from the schematic by eye | |
| R20 | 100 | 100 | read from the schematic by eye | |
| Capacitors 15 | ||||
| C1 | .56uF | 560n | read from the schematic by eye | |
| C2 | .22uF | 220n | read from the schematic by eye | |
| C3 | .1uF | 100n | read from the schematic by eye | |
| C4 | .56uF | 560n | read from the schematic by eye | |
| C5 | .22uF | 220n | read from the schematic by eye | |
| C6 | .1uF | 100n | read from the schematic by eye | |
| C7 | .56uF | 560n | read from the schematic by eye | |
| C8 | .22uF | 220n | read from the schematic by eye | |
| C9 | .1uF | 100n | read from the schematic by eye | |
| C10 | .05uF | 50n | read from the schematic by eye | |
| C11 | .05uF | 50n | read from the schematic by eye | |
| C12 | .05uF | 50n | read from the schematic by eye | |
| C13 | 20uF | 20u | electrolytic, 10V; could be 30; read from the schematic by eye | |
| C14 | 100uF | 100u | electrolytic, 16V; read from the schematic by eye | |
| C15 | 1000uF | 1m | electrolytic, 16V; read from the schematic by eye | |
| Transistors 5 | ||||
| Q1 | ? | ? | NPN, no part number given; read from the schematic by eye | |
| Q2 | ? | ? | NPN emitter follower, no part number given; read from the schematic by eye | |
| Q3 | ? | ? | NPN used as a noise source (base-emitter junction, collector N.C.), no part number given; read from the schematic by eye | |
| Q4 | ? | ? | NPN noise amplifier, no part number given; read from the schematic by eye | |
| Q5 | ? | ? | NPN noise amplifier, no part number given; read from the schematic by eye | |
| Potentiometers 2 | ||||
| Freq | 100K | 100k | Potentiometer | R17A/R17B dual-gang; read from the schematic by eye |
| Output Attenuation | 5K | 5k | Potentiometer | R7; read from the schematic by eye |
| Switches 1 | ||||
| S1 | 3P3T | 3P3T | range: 1-3Hz / 3-9Hz / 9-25Hz, sections S1A-S1C; read from the schematic by eye | |