Enclosure not stated
Paia 4720a
- Category
- Ring Mod / Synth· Oscillators LFOs and Signal Generators
- 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 84 rows
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Check before you build · 4 values the reader of this schematic was not sure of
- C1: tiny smudged label, read as 15pF
- R24: 18K, could be 10K
- R30: 3900, smudged
- R6/R7/R37/R51: adjusters drawn as pots (Pitch Zero, Init Pitch, Init PW, Pitch Range); classed as trimmers, may be panel controls
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 47 | ||||
| R1 | 270K | 270k | read from the schematic by eye | |
| R2 | 270K | 270k | read from the schematic by eye | |
| R3 | 270K | 270k | read from the schematic by eye | |
| R4 | 100K | 100k | read from the schematic by eye | |
| R5 | 2.2MEG | 2.2M | read from the schematic by eye | |
| R8 | 2700 | 2.7k | read from the schematic by eye | |
| R9 | 15K | 15k | read from the schematic by eye | |
| R10 | 1MEG | 1M | read from the schematic by eye | |
| R12 | 1MEG | 1M | read from the schematic by eye | |
| R13 | 330 | 330 | read from the schematic by eye | |
| R14 | 330 | 330 | read from the schematic by eye | |
| R15 | 2200 | 2.2k | read from the schematic by eye | |
| R16 | 2200 | 2.2k | read from the schematic by eye | |
| R17 | 270 | 270 | read from the schematic by eye | |
| R18 | 68K | 68k | read from the schematic by eye | |
| R19 | 150K | 150k | read from the schematic by eye | |
| R20 | 68K | 68k | read from the schematic by eye | |
| R22 | 4700 | 4.7k | read from the schematic by eye | |
| R23 | 680 | 680 | read from the schematic by eye | |
| R24 | 18K | 18k | read from the schematic by eye | |
| R25 | 33K | 33k | read from the schematic by eye | |
| R26 | 4700 | 4.7k | read from the schematic by eye | |
| R27 | 10K | 10k | read from the schematic by eye | |
| R28 | 10K | 10k | read from the schematic by eye | |
| R29 | 82K | 82k | read from the schematic by eye | |
| R30 | 3900 | 3.9k | read from the schematic by eye | |
| R31 | 1K | 1k | read from the schematic by eye | |
| R32 | 68K | 68k | read from the schematic by eye | |
| R33 | 150K | 150k | read from the schematic by eye | |
| R34 | 150K | 150k | read from the schematic by eye | |
| R36 | 39K | 39k | read from the schematic by eye | |
| R38 | 150K | 150k | read from the schematic by eye | |
| R39 | 68K | 68k | read from the schematic by eye | |
| R40 | 68K | 68k | read from the schematic by eye | |
| R41 | 22K | 22k | read from the schematic by eye | |
| R42 | 4700 | 4.7k | read from the schematic by eye | |
| R43 | 470 | 470 | read from the schematic by eye | |
| R44 | 100K | 100k | read from the schematic by eye | |
| R45 | 100 | 100 | read from the schematic by eye | |
| R46 | 100K | 100k | read from the schematic by eye | |
| R47 | 4700 | 4.7k | read from the schematic by eye | |
| R48 | 1K | 1k | read from the schematic by eye | |
| R50 | 6800 | 6.8k | read from the schematic by eye | |
| R52 | 10K | 10k | read from the schematic by eye | |
| R53 | 100 | 100 | read from the schematic by eye | |
| R54 | 100 | 100 | read from the schematic by eye | |
| R55 | 1K | 1k | read from the schematic by eye | |
| Capacitors 10 | ||||
| C1 | 15pF | 15p | value drawn small, read as 15pf; read from the schematic by eye | |
| C2 | .01uF | 10n | read from the schematic by eye | |
| C3 | 47pF | 47p | read from the schematic by eye | |
| C4 | 2.2uF | 2.2u | 10V, ramp out; read from the schematic by eye | |
| C5 | 2.2uF | 2.2u | 10V, triangle out; read from the schematic by eye | |
| C6 | 2.2uF | 2.2u | 10V, sine out; read from the schematic by eye | |
| C7 | 15pF | 15p | read from the schematic by eye | |
| C8 | 2.2uF | 2.2u | 10V, pulse out; read from the schematic by eye | |
| C9 | 100uF | 100u | 16V; read from the schematic by eye | |
| C10 | 100uF | 100u | 16V; read from the schematic by eye | |
| Diodes 7 | ||||
| D1 | 1N914 | 1N914 | per note: diodes D1 thru D6 1N914; read from the schematic by eye | |
| D2 | 1N914 | 1N914 | per note: diodes D1 thru D6 1N914; read from the schematic by eye | |
| D3 | 1N914 | 1N914 | per note: diodes D1 thru D6 1N914; read from the schematic by eye | |
| D4 | 1N914 | 1N914 | per note: diodes D1 thru D6 1N914; read from the schematic by eye | |
| D5 | 1N914 | 1N914 | per note: diodes D1 thru D6 1N914; read from the schematic by eye | |
| D6 | 1N914 | 1N914 | per note: diodes D1 thru D6 1N914; read from the schematic by eye | |
| D7 | 5.6V zener | 5V6 | 5.6V zener, no part number; read from the schematic by eye | |
| Transistors 10 | ||||
| Q1 | 2N5139 | 2N5139 | PNP, selected; read from the schematic by eye | |
| Q2 | 2N5139 | 2N5139 | PNP, selected; read from the schematic by eye | |
| Q3 | 2N5129 | 2N5129 | read from the schematic by eye | |
| Q4 | 2N4871 | 2N4871 | UJT; read from the schematic by eye | |
| Q5 | 2N3391 | 2N3391 | read from the schematic by eye | |
| Q6 | 2N2712 | 2N2712 | read from the schematic by eye | |
| Q7 | 2N5129 | 2N5129 | read from the schematic by eye | |
| Q8 | 2N5129 | 2N5129 | read from the schematic by eye | |
| Q9 | 2N5129 | 2N5129 | read from the schematic by eye | |
| Q10 | 2N5129 | 2N5129 | read from the schematic by eye | |
| ICs 2 | ||||
| IC1 | 748 | 748 | op amp; read from the schematic by eye | |
| IC2 | ? | ? | quad op amp, sections A-D (pins 1-12 suggest a 4136-type); no part number on sheet; read from the schematic by eye | |
| Trimmers 8 | ||||
| R6 | 50K | 50k | Pitch Zero; read from the schematic by eye | |
| R7 | 100K | 100k | Init Pitch; read from the schematic by eye | |
| R11 | 500K | 500k | Int Trim; read from the schematic by eye | |
| R21 | 50K | 50k | Sine Sym; read from the schematic by eye | |
| R35 | 50K | 50k | PW Trim; read from the schematic by eye | |
| R37 | 75K | 75k | Init PW; read from the schematic by eye | |
| R49 | 10K | 10k | Tri Sym; read from the schematic by eye | |
| R51 | 10K | 10k | Pitch Range; read from the schematic by eye | |