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Scott Bernardi PT2399 Echo Delay
- Category
- Delay· Delay Echo and Samplers
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- see vendor
- Tags
- Delay Echo and Samplers
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 60 rows
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Check before you build · 1 value the reader of this schematic was not sure of
- ×1 100K pot: drawn beside RV3 (Delay) with no designator of its own; the RV3 label sits between the two pots, so which is RV3 is not certain
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 31 | ||||
| R1 | 100K | 100k | read from the schematic by eye | |
| R2 | 100K | 100k | read from the schematic by eye | |
| R3 | 100K | 100k | read from the schematic by eye | |
| R4 | 100K | 100k | read from the schematic by eye | |
| R5 | 100K | 100k | read from the schematic by eye | |
| R6 | 2.7K | 2.7k | read from the schematic by eye | |
| R7 | 15K | 15k | read from the schematic by eye | |
| R8 | 10K | 10k | read from the schematic by eye | |
| R9 | 15K | 15k | read from the schematic by eye | |
| R11 | 100K | 100k | read from the schematic by eye | |
| R12 | 100K | 100k | read from the schematic by eye | |
| R13 | 47K | 47k | read from the schematic by eye | |
| R14 | 27K | 27k | read from the schematic by eye | |
| R15 | 100K | 100k | read from the schematic by eye | |
| R16 | 1K | 1k | read from the schematic by eye | |
| R17 | 10K | 10k | read from the schematic by eye | |
| R18 | 15K | 15k | read from the schematic by eye | |
| R19 | 15K | 15k | read from the schematic by eye | |
| R20 | 20K | 20k | read from the schematic by eye | |
| R21 | 47K | 47k | read from the schematic by eye | |
| R22 | 1K | 1k | R22 is marked R22* on the drawing (select to taste); read from the schematic by eye | |
| R23 | 470 | 470 | read from the schematic by eye | |
| R24 | 1M | 1M | read from the schematic by eye | |
| R25 | 100K | 100k | read from the schematic by eye | |
| R26 | 470 | 470 | read from the schematic by eye | |
| R30 | 100 | 100 | read from the schematic by eye | |
| R31 | 1M | 1M | read from the schematic by eye | |
| R32 | 1M | 1M | read from the schematic by eye | |
| R33 | 4.7M | 4.7M | read from the schematic by eye | |
| R34 | 360 | 360 | read from the schematic by eye | |
| R35 | 220K | 220k | read from the schematic by eye | |
| Capacitors 14 | ||||
| C1 | 560pF | 560p | read from the schematic by eye | |
| C2 | 4.7uF | 4.7u | read from the schematic by eye | |
| C3 | 5600pF | 5.6n | read from the schematic by eye | |
| C4 | 10uF | 10u | read from the schematic by eye | |
| C5 | .01uF | 10n | read from the schematic by eye | |
| C6 | .1uF | 100n | read from the schematic by eye | |
| C7 | .1uF | 100n | read from the schematic by eye | |
| C8 | 5600pF | 5.6n | read from the schematic by eye | |
| C9 | 560pF | 560p | read from the schematic by eye | |
| C10 | .1uF | 100n | read from the schematic by eye | |
| C11 | .1uF | 100n | read from the schematic by eye | |
| C12 | 4.7uF | 4.7u | read from the schematic by eye | |
| C13 | .1uF | 100n | read from the schematic by eye | |
| C14 | 100uF | 100u | read from the schematic by eye | |
| Diodes 2 | ||||
| D1 | Diode | DIODE | no part number given; read from the schematic by eye | |
| D2 | Diode | DIODE | no part number given; read from the schematic by eye | |
| Transistors 2 | ||||
| Q1 | 2N3904 | 2N3904 | read from the schematic by eye | |
| Q2 | 2N3906 | 2N3906 | read from the schematic by eye | |
| ICs 4 | ||||
| U1 | TL074 | TL074 | read from the schematic by eye | |
| U2 | TL072 | TL072 | read from the schematic by eye | |
| U3 | CA3080 | CA3080 | OTA recirculation VCA (page 2); page 1 also shows a loose CA3080 symbol labeled U4, apparently the same chip; read from the schematic by eye | |
| U4 | PT2399 | PT2399 | read from the schematic by eye | |
| Opto 1 | ||||
| LDR1 | LED/LDR | LED/LDR | LED and LDR pair (vactrol) driven by Q1; LDR goes to PT2399 pin 6; read from the schematic by eye | |
| Potentiometers 5 | ||||
| Mix | B10K | B10k | Potentiometer | 10K lin; read from the schematic by eye |
| Delay | 100K | 100k | Potentiometer | RV3; read from the schematic by eye |
| ×1 | 100K | 100k | Potentiometer | second 100K pot in series with Delay (RV3) between R34 and R35, no designator; range set; read from the schematic by eye |
| RV1 | B10K | B10k | Potentiometer | 10K lin, CV input level; read from the schematic by eye |
| Recirculation | 10K | 10k | Potentiometer | no designator; read from the schematic by eye |
| Trimmers 1 | ||||
| RV2 | 100K | 100k | CA3080 bias/offset trim; read from the schematic by eye | |