1590J · 3 knobs
Freq Tweq V.2
Based on the Guyatone PS-022 Para EQ
- Category
- EQ / Filter· Eq
- Controls
- Level · Hig · Hif
- Price
- $15.00in stock
From the vendor
Clone of the Guyatone PS-022 Para EQ. Parametric EQ, for all your tone shaping needs. Need to fill out a certain frequency segment? No problem. Cocked wah tone? Go for it. All at the twist of a knob... or two... or three. Also designed for silent relay switching, so thunderous switching POP not included.
The v.2 version supersedes the original board, which used the MV-57B chip for the bypass. This new board uses the Coda bypass scheme. The preprogrammed PIC chip is available here; http://www.deadendfx.com/product/coda-bypass-pic
Schematic
The schematic is in the vendor's build document, page 6. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 76 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
ocr read from an image · sch paired from the schematic · fixed corrected by hand. Check marked values against the build document.
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 44 | ||||
| R9 | 33ksch | 33k | ||
| R10 | 10ksch | 10k | ||
| R11 | 10ksch | 10k | ||
| R12 | 10ksch | 10k | ||
| R13 | 10ksch | 10k | ||
| R14 | 3k3sch | 3.3k | ||
| R15 | 3k3sch | 3.3k | ||
| R16 | 3k3sch | 3.3k | ||
| R17 | 1msch | 1M | ||
| R18 | 10ksch | 10k | ||
| R19 | 470rsch | 470 | ||
| R20 | 100ksch | 100k | ||
| R29 | 47ksch | 47k | ||
| R30 | 47ksch | 47k | ||
| R31 | 1msch | 1M | ||
| R32 | 1ksch | 1k | ||
| R33 | 47ksch | 47k | ||
| R34 | 47ksch | 47k | ||
| R35 | 1ksch | 1k | ||
| R36 | 47ksch | 47k | ||
| R37 | 47ksch | 47k | ||
| R38 | 1msch | 1M | ||
| R39 | 1ksch | 1k | ||
| R40 | 47ksch | 47k | ||
| R41 | 47ksch | 47k | ||
| R42 | 10ksch | 10k | ||
| R43 | 10ksch | 10k | ||
| R1 | 47ksch | 47k | ||
| R2 | 1ksch | 1k | ||
| R3 | 47ksch | 47k | ||
| R7 | 1msch | 1M | ||
| R8 | 220ksch | 220k | ||
| R21 | 1ksch | 1k | ||
| R22 | 47ksch | 47k | ||
| R23 | 47ksch | 47k | ||
| R24 | 1msch | 1M | ||
| R26 | 47ksch | 47k | ||
| R27 | 47ksch | 47k | ||
| R28 | 1ksch | 1k | ||
| R44 | 1ksch | 1k | ||
| R45 | 1k5sch | 1.5k | ||
| R46 | 10ksch | 10k | ||
| R47 | 10ksch | 10k | ||
| R25 | 1ocr | 1 | ||
| Capacitors 20 | ||||
| C4 | 100psch | 100p | ||
| C5 | 100nsch | 100n | ||
| C8 | 47nsch | 47n | ||
| C9 | 1usch | 1u | ||
| C14 | 33nsch | 33n | ||
| C16 | 82nsch | 82n | ||
| C17 | 82nsch | 82n | ||
| C18 | 33usch | 33u | ||
| C19 | 100psch | 100p | ||
| C1 | 47nsch | 47n | ||
| C2 | 100usch | 100u | ||
| C3 | 47usch | 47u | ||
| C6 | 10usch | 10u | ||
| C10 | 8n2sch | 8.2n | ||
| C11 | 8n2sch | 8.2n | ||
| C12 | 33usch | 33u | ||
| C13 | 33nsch | 33n | ||
| C15 | 33usch | 33u | ||
| C20 | 100psch | 100p | ||
| C23 | 100psch | 100p | ||
| Diodes 2 | ||||
| D2 | 1n4001sch | 1N4001 | ||
| D5 | 1N4148ocr | 1N4148 | ||
| Transistors 1 | ||||
| Q1 | 2SC1571-Focr | 2SC1571-F | ||
| ICs 5 | ||||
| IC11 | TLP222Gocr | TLP222G | ||
| IC3 | TL072ocr | TL072 | ||
| IC4 | 4558ocr | 4558 | ||
| IC6 | 4558ocr | 4558 | ||
| IC9 | 4558ocr | 4558 | ||
| Potentiometers 3 | ||||
| Level | A100Ksch | A100k | Potentiometer | |
| HIG | B10Kocr | B10k | Potentiometer | |
| HIF | C100Kocr | C100k | Potentiometer | |
| Switches 1 | ||||
| Momentary | SPSTocr | SPST | ||