Enclosure not stated · 5 knobs
Digitech PDS2020 (PDF)
Based on the DigiTech PDS2020· 1 other board clones it
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 241 rows
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Check before you build · 4 values the reader of this schematic was not sure of
- C48: drawn '15 NP', read as 15uF non-polar; could be 15pF
- R75: reads 18K, could be 10K
- BP1-BP27: bypass caps with no value printed
- pot taper codes W and C are DOD codes, not mapped to A/B
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 98 | ||||
| R1 | 10K | 10k | read from the schematic by eye | |
| R2 | 10K | 10k | read from the schematic by eye | |
| R3 | 33K | 33k | read from the schematic by eye | |
| R4 | 22K | 22k | read from the schematic by eye | |
| R5 | 10K | 10k | read from the schematic by eye | |
| R6 | 22K | 22k | read from the schematic by eye | |
| R7 | 10K | 10k | read from the schematic by eye | |
| R8 | 10K | 10k | read from the schematic by eye | |
| R9 | 10K | 10k | read from the schematic by eye | |
| R10 | 33K | 33k | read from the schematic by eye | |
| R11 | 10K | 10k | read from the schematic by eye | |
| R12 | 10K | 10k | read from the schematic by eye | |
| R13 | 20K | 20k | read from the schematic by eye | |
| R14 | 20K | 20k | read from the schematic by eye | |
| R15 | 10K | 10k | read from the schematic by eye | |
| R16 | 1K | 1k | read from the schematic by eye | |
| R17 | 470K | 470k | 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 | 3.3K | 3.3k | read from the schematic by eye | |
| R21 | 2M | 2M | read from the schematic by eye | |
| R22 | 10K | 10k | read from the schematic by eye | |
| R23 | 3.3K | 3.3k | read from the schematic by eye | |
| R24 | 1K | 1k | read from the schematic by eye | |
| R25 | 470K | 470k | read from the schematic by eye | |
| R26 | 10K | 10k | 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 | 10K | 10k | read from the schematic by eye | |
| R30 | 10K | 10k | read from the schematic by eye | |
| R31 | 220K | 220k | read from the schematic by eye | |
| R32 | 3.3K | 3.3k | read from the schematic by eye | |
| R33 | 10K | 10k | read from the schematic by eye | |
| R34 | 33K | 33k | read from the schematic by eye | |
| R35 | 10K | 10k | read from the schematic by eye | |
| R36 | 10K | 10k | read from the schematic by eye | |
| R37 | 10K | 10k | read from the schematic by eye | |
| R38 | 3.3K | 3.3k | read from the schematic by eye | |
| R39 | 10K | 10k | read from the schematic by eye | |
| R40 | 10K | 10k | read from the schematic by eye | |
| R41 | 10K | 10k | read from the schematic by eye | |
| R42 | 3.3K | 3.3k | read from the schematic by eye | |
| R43 | 22K | 22k | read from the schematic by eye | |
| R44 | 22K | 22k | read from the schematic by eye | |
| R45 | 22K | 22k | read from the schematic by eye | |
| R46 | 22K | 22k | read from the schematic by eye | |
| R47 | 20K | 20k | read from the schematic by eye | |
| R48 | 20K | 20k | read from the schematic by eye | |
| R49 | 20K | 20k | read from the schematic by eye | |
| R50 | 20K | 20k | read from the schematic by eye | |
| R51 | 33K | 33k | read from the schematic by eye | |
| R52 | 3.3K | 3.3k | read from the schematic by eye | |
| R53 | 1K | 1k | read from the schematic by eye | |
| R54 | 470K | 470k | read from the schematic by eye | |
| R55 | 150K | 150k | read from the schematic by eye | |
| R56 | 10K | 10k | read from the schematic by eye | |
| R57 | 100K | 100k | read from the schematic by eye | |
| R58 | 1M | 1M | read from the schematic by eye | |
| R59 | 1M | 1M | read from the schematic by eye | |
| R60 | 100K | 100k | read from the schematic by eye | |
| R61 | 3.3K | 3.3k | read from the schematic by eye | |
| R62 | 100K | 100k | read from the schematic by eye | |
| R63 | 100K | 100k | read from the schematic by eye | |
| R64 | 100K | 100k | read from the schematic by eye | |
| R65 | 1M | 1M | read from the schematic by eye | |
| R66 | 1M | 1M | read from the schematic by eye | |
| R67 | 10K | 10k | on the jack board (page 1); listed as not used on the main board; read from the schematic by eye | |
| R68 | 1M | 1M | read from the schematic by eye | |
| R69 | 100K | 100k | read from the schematic by eye | |
| R70 | 3.3K | 3.3k | read from the schematic by eye | |
| R71 | 22K | 22k | read from the schematic by eye | |
| R72 | 100K | 100k | read from the schematic by eye | |
| R73 | 120K | 120k | read from the schematic by eye | |
| R74 | 10K | 10k | read from the schematic by eye | |
| R75 | 18K | 18k | Vbias divider; reads 18K (could be 10K); read from the schematic by eye | |
| R76 | 22K | 22k | read from the schematic by eye | |
| R77 | 200 | 200 | read from the schematic by eye | |
| R78 | 4.7K | 4.7k | read from the schematic by eye | |
| R79 | 2K | 2k | read from the schematic by eye | |
| R80 | 47K | 47k | read from the schematic by eye | |
| R81 | 12K | 12k | read from the schematic by eye | |
| R82 | 10K | 10k | read from the schematic by eye | |
| R83 | 220K | 220k | read from the schematic by eye | |
| R84 | 47K | 47k | read from the schematic by eye | |
| R85 | 100K | 100k | read from the schematic by eye | |
| R86 | 2K | 2k | read from the schematic by eye | |
| R87 | 4.7K | 4.7k | read from the schematic by eye | |
| R88 | 75K | 75k | read from the schematic by eye | |
| R89 | 75K | 75k | read from the schematic by eye | |
| R90 | 22K | 22k | read from the schematic by eye | |
| R91 | 2M | 2M | read from the schematic by eye | |
| R92 | 10K | 10k | read from the schematic by eye | |
| R93 | 10K | 10k | read from the schematic by eye | |
| R94 | 1K | 1k | read from the schematic by eye | |
| R95 | 10 | 10 | read from the schematic by eye | |
| R96 | 22K | 22k | read from the schematic by eye | |
| R97 | 22K | 22k | read from the schematic by eye | |
| R98 | 10K | 10k | on the jack board (page 1); read from the schematic by eye | |
| Capacitors 81 | ||||
| C1 | .018uF | 18n | read from the schematic by eye | |
| C2 | .0027uF | 2.7n | read from the schematic by eye | |
| C3 | .001uF | 1n | read from the schematic by eye | |
| C4 | 120pF | 120p | read from the schematic by eye | |
| C5 | .0056uF | 5.6n | read from the schematic by eye | |
| C6 | 10uF | 10u | read from the schematic by eye | |
| C7 | 25pF | 25p | read from the schematic by eye | |
| C8 | .01uF | 10n | read from the schematic by eye | |
| C9 | .47uF | 470n | tantalum (T); read from the schematic by eye | |
| C10 | 1uF | 1u | read from the schematic by eye | |
| C11 | 1uF | 1u | read from the schematic by eye | |
| C12 | 10uF | 10u | read from the schematic by eye | |
| C13 | 120pF | 120p | read from the schematic by eye | |
| C14 | .033uF | 33n | read from the schematic by eye | |
| C15 | 1uF | 1u | non-polar (NP); read from the schematic by eye | |
| C16 | .027uF | 27n | read from the schematic by eye | |
| C17 | .56uF | 560n | low leakage (LL); read from the schematic by eye | |
| C18 | 1uF | 1u | read from the schematic by eye | |
| C19 | 1uF | 1u | read from the schematic by eye | |
| C20 | .033uF | 33n | read from the schematic by eye | |
| C21 | 120pF | 120p | read from the schematic by eye | |
| C22 | .47uF | 470n | tantalum (T); read from the schematic by eye | |
| C23 | 25pF | 25p | read from the schematic by eye | |
| C24 | .01uF | 10n | read from the schematic by eye | |
| C25 | .001uF | 1n | read from the schematic by eye | |
| C26 | 120pF | 120p | read from the schematic by eye | |
| C27 | .0056uF | 5.6n | read from the schematic by eye | |
| C28 | .047uF | 47n | read from the schematic by eye | |
| C29 | .001uF | 1n | read from the schematic by eye | |
| C30 | 120pF | 120p | read from the schematic by eye | |
| C31 | .0056uF | 5.6n | read from the schematic by eye | |
| C32 | .56uF | 560n | low leakage (LL); read from the schematic by eye | |
| C33 | 1uF | 1u | non-polar (NP); read from the schematic by eye | |
| C34 | .027uF | 27n | read from the schematic by eye | |
| C35 | 4.7uF | 4.7u | read from the schematic by eye | |
| C36 | 4.7uF | 4.7u | read from the schematic by eye | |
| C37 | 4.7uF | 4.7u | read from the schematic by eye | |
| C38 | .01uF | 10n | read from the schematic by eye | |
| C39 | .047uF | 47n | read from the schematic by eye | |
| C40 | .047uF | 47n | read from the schematic by eye | |
| C41 | .047uF | 47n | read from the schematic by eye | |
| C42 | 10uF | 10u | read from the schematic by eye | |
| C43 | 330uF | 330u | read from the schematic by eye | |
| C44 | .0015uF | 1.5n | read from the schematic by eye | |
| C45 | .047uF | 47n | on the jack board (page 1); listed as not used on the main board; read from the schematic by eye | |
| C46 | 330uF | 330u | read from the schematic by eye | |
| C47 | 10uF | 10u | read from the schematic by eye | |
| C48 | 15uF | 15u | drawn '15 NP': read as 15uF non-polar (LFO integrator); could be 15pF NPO; read from the schematic by eye | |
| C49 | 33uF | 33u | low leakage (LL); read from the schematic by eye | |
| C50 | 10uF | 10u | read from the schematic by eye | |
| C51 | 10uF | 10u | read from the schematic by eye | |
| C52 | .1uF | 100n | read from the schematic by eye | |
| C53 | 120pF | 120p | read from the schematic by eye | |
| C54 | 1uF | 1u | non-polar (NP); read from the schematic by eye | |
| BP1 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP2 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP3 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP4 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP5 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP6 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP7 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP8 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP9 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP10 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP11 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP12 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP13 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP14 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP15 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP16 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP17 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP18 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP19 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP20 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP21 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP22 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP23 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP24 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP25 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP26 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| BP27 | ? | ? | supply bypass cap, drawn 'BP' with no value; read from the schematic by eye | |
| Diodes 15 | ||||
| D1 | 1N4001 | 1N4001 | 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 | |
| D7 | 1N4148 | 1N4148 | read from the schematic by eye | |
| D8 | 1N4148 | 1N4148 | read from the schematic by eye | |
| D9 | 1N4148 | 1N4148 | read from the schematic by eye | |
| D10 | 1N4148 | 1N4148 | read from the schematic by eye | |
| D11 | 1N4148 | 1N4148 | read from the schematic by eye | |
| D12 | 1N4148 | 1N4148 | read from the schematic by eye | |
| D13 | 1N4148 | 1N4148 | read from the schematic by eye | |
| D14 | 1N4148 | 1N4148 | read from the schematic by eye | |
| D15 | 1N4148 | 1N4148 | read from the schematic by eye | |
| D16 | 1N4148 | 1N4148 | read from the schematic by eye | |
| D17 | 1N4148 | 1N4148 | read from the schematic by eye | |
| Transistors 11 | ||||
| Q1 | J111 | J111 | read from the schematic by eye | |
| Q2 | 2N5088 | 2N5088 | read from the schematic by eye | |
| Q3 | 2N5088 | 2N5088 | read from the schematic by eye | |
| Q5 | 2N5088 | 2N5088 | read from the schematic by eye | |
| Q6 | 2N5088 | 2N5088 | read from the schematic by eye | |
| Q7 | 2N4125 | 2N4125 | read from the schematic by eye | |
| Q8 | J113 | J113 | read from the schematic by eye | |
| Q9 | 2N5088 | 2N5088 | read from the schematic by eye | |
| Q10 | 2N5088 | 2N5088 | read from the schematic by eye | |
| Q11 | 2N5088 | 2N5088 | read from the schematic by eye | |
| Q12 | 2N5088 | 2N5088 | read from the schematic by eye | |
| ICs 23 | ||||
| U1 | TL062 | TL062 | read from the schematic by eye | |
| U2 | TL062 | TL062 | read from the schematic by eye | |
| U3 | 4007A | 4007A | CD4007; read from the schematic by eye | |
| U4 | 4007A | 4007A | CD4007; read from the schematic by eye | |
| U5 | TL062 | TL062 | read from the schematic by eye | |
| U6 | 74HC195 | 74HC195 | read from the schematic by eye | |
| U7 | 74HC195 | 74HC195 | read from the schematic by eye | |
| U8 | 74HC00 | 74HC00 | read from the schematic by eye | |
| U9 | TL062 | TL062 | read from the schematic by eye | |
| U10 | TL062 | TL062 | read from the schematic by eye | |
| U11 | TL062 | TL062 | read from the schematic by eye | |
| U12 | 74HC374 | 74HC374 | read from the schematic by eye | |
| U13 | 4464-120 | 4464-120 | 64Kx4 DRAM; read from the schematic by eye | |
| U14 | 74HC157 | 74HC157 | read from the schematic by eye | |
| U15 | 4024 | 4024 | read from the schematic by eye | |
| U16 | 74AC04 | 74AC04 | read from the schematic by eye | |
| U17 | NE570 | NE570 | compander; read from the schematic by eye | |
| U18 | ADC0820 | ADC0820 | 8-bit ADC; read from the schematic by eye | |
| U19 | 4464-120 | 4464-120 | 64Kx4 DRAM; read from the schematic by eye | |
| U20 | 74HC157 | 74HC157 | read from the schematic by eye | |
| U21 | 74HC4040 | 74HC4040 | read from the schematic by eye | |
| U22 | LM358 | LM358 | read from the schematic by eye | |
| U23 | 78L05 | 78L05 | 5V regulator; read from the schematic by eye | |
| Potentiometers 5 | ||||
| Delay Time | 100K | 100k | Potentiometer | P4, drawn P100K W FX (W taper code); read from the schematic by eye |
| Regen | 100K | 100k | Potentiometer | P5, drawn P100K W FX (W taper code); read from the schematic by eye |
| Speed | 500K | 500k | Potentiometer | P6, drawn P500K C FX (C taper code); read from the schematic by eye |
| Width | 100K | 100k | Potentiometer | P7, drawn P100K W FX (W taper code); read from the schematic by eye |
| Mix | 500K | 500k | Potentiometer | P8, drawn P500K C FX (C taper code); read from the schematic by eye |
| Trimmers 3 | ||||
| P1 | 50K | 50k | TP50K, regen trim; read from the schematic by eye | |
| P2 | 50K | 50k | TP50K, bias trim; read from the schematic by eye | |
| P3 | 50K | 50k | TP50K, clock/ADC trim (unnamed); read from the schematic by eye | |
| Switches 2 | ||||
| SW2 | SPST | SPST | Repeat Hold, momentary 'touch' pushbutton (jack board, page 1); read from the schematic by eye | |
| SW3 | DPDT | DPDT | slide, delay range .125/.500/2 sec (jack board, page 1); read from the schematic by eye | |
| LEDs 2 | ||||
| D2 | LED | LED | drawn LDLR (DOD code for the LED); read from the schematic by eye | |
| D3 | LED | LED | drawn LDLR (DOD code for the LED); read from the schematic by eye | |
| Other 1 | ||||
| RN1 | LA10502 | LA10502 | resistor ladder network used as the 8-bit DAC; read from the schematic by eye | |
Other boards based on the DigiTech PDS2020
- Digitech PDS2020 Experimentalists Anonymous