Enclosure not stated
From the vendor
The PT2399 chip slightly dirty the sound with longer delay times, which some consider a disadvantage. Thanks to the use of the NE570 compandor, the delay is devoid of the above-mentioned distortions, which ensures great sound. Also added a section to control the total volume of the effect, allowing e.g. a solo volume boost.
PCB. Dimensions: 60mm x 60mm
Files to download:
•
delay PT80 plus ENG.pdf
Schematic
The schematic is in the vendor's build document, page 1. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 78 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 21 | ||||
| R3 | 1k | 1k | ||
| R9 | 1k | 1k | ||
| R10 | 1k | 1k | ||
| R25 | 1k | 1k | ||
| R28 | 6k8 | 6.8k | ||
| R6 | 22k | 22k | ||
| R13 | 22k | 22k | ||
| R15 | 22k | 22k | ||
| R16 | 22k | 22k | ||
| R18 | 22k | 22k | ||
| R7 | 36k | 36k | ||
| R8 | 36k | 36k | ||
| R12 | 100k | 100k | ||
| R19 | 100k | 100k | ||
| R1 | 1M | 1M | ||
| R2 | 1M | 1M | ||
| R17 | 10k | 10k | C17 10u | |
| R23 | 10k | 10k | C23 100n | |
| R24 | 10k | 10k | C24 100n | |
| R26 | 10k | 10k | C26 10n | |
| R27 | 10k | 10k | ||
| Capacitors 42 | ||||
| C11 | 47p | 47p | ||
| C9 | 100p | 100p | ||
| C39 | 100p | 100p | ||
| C3 | 470p | 470p | ||
| C28 | 1n | 1n | ||
| C38 | 1n | 1n | ||
| C27 | 2n2 | 2.2n | ||
| C36 | 2n2 | 2.2n | ||
| C37 | 3n3 | 3.3n | ||
| C26 | 10n | 10n | ||
| C32 | 10n | 10n | ||
| C2 | 15n | 15n | ||
| C10 | 15n | 15n | ||
| C1 | 47n | 47n | ||
| C15 | 100n | 100n | ||
| C19 | 100n | 100n | ||
| C20 | 100n | 100n | ||
| C23 | 100n | 100n | ||
| C24 | 100n | 100n | ||
| C29 | 100n | 100n | ||
| C30 | 100n | 100n | ||
| C34 | 100n | 100n | ||
| C35 | 100n | 100n | ||
| C8 | 470n | 470n | ||
| C40 | 470n | 470n | ||
| C4 | 1u | 1u | ||
| C5 | 1u | 1u | ||
| C6 | 1u | 1u | ||
| C7 | 1u | 1u | ||
| C12 | 1u | 1u | ||
| C13 | 1u | 1u | ||
| C14 | 1u | 1u | ||
| C31 | 1u | 1u | ||
| C41 | 1u | 1u | ||
| C42 | 1u | 1u | ||
| C17 | 10u | 10u | ||
| C18 | 10u | 10u | ||
| C22 | 22u | 22u | ||
| C21 | 47u | 47u | ||
| C25 | 47u | 47u | ||
| C33 | 47u | 47u | ||
| C16 | 100u | 100u | ||
| Diodes 4 | ||||
| D1 | 1N914 | 1N914 | ||
| D2 | 1N914 | 1N914 | ||
| D3 | 1N914 | 1N914 | ||
| D4 | 1N914 | 1N914 | ||
| Transistors 1 | ||||
| Q1 | 2N5088 | 2N5088 | ||
| ICs 6 | ||||
| U2 | NE570/1 | NE570/1 | ||
| U1 | TL072 | TL072 | ||
| U3 | ICL7660S | ICL7660S | ||
| U4 | 78L12 | 78L12 | ||
| U5 | 78L05 | 78L05 | ||
| U6 | PT2399 | PT2399 | ||
| Potentiometers 4 | ||||
| RV1 | B50k | B50k | ||
| RV2 | B50k | B50k | ||
| RV3 | B50k | B50k | ||
| RV4 | A20k | A20k | ||