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1590J · 1 knobs

Dead End FX

Freq Tweq V.2

Based on the Guyatone PS-022 Para EQ

Category
EQ / Filter· Eq
Controls
Level
Price
$15.00in stock
Buy the PCB at Dead End FX Build document

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 68 rows

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RefValueNormalizedTypeNotes
Resistors 43
R933k33kfrom schematic
R1010k10kfrom schematic
R1110k10kfrom schematic
R1210k10kfrom schematic
R1310k10kfrom schematic
R143k33.3kfrom schematic
R153k33.3kfrom schematic
R163k33.3kfrom schematic
R171m1Mfrom schematic
R1810k10kfrom schematic
R19470r470from schematic
R20100k100kfrom schematic
R2947k47kfrom schematic
R3047k47kfrom schematic
R311m1Mfrom schematic
R321k1kfrom schematic
R3347k47kfrom schematic
R3447k47kfrom schematic
R351k1kfrom schematic
R3647k47kfrom schematic
R3747k47kfrom schematic
R381m1Mfrom schematic
R391k1kfrom schematic
R4047k47kfrom schematic
R4147k47kfrom schematic
R4210k10kfrom schematic
R4310k10kfrom schematic
R147k47kfrom schematic
R21k1kfrom schematic
R347k47kfrom schematic
R71m1Mfrom schematic
R8220k220kfrom schematic
R211k1kfrom schematic
R2247k47kfrom schematic
R2347k47kfrom schematic
R241m1Mfrom schematic
R2647k47kfrom schematic
R2747k47kfrom schematic
R281k1kfrom schematic
R441k1kfrom schematic
R451k51.5kfrom schematic
R4610k10kfrom schematic
R4710k10kfrom schematic
Capacitors 20
C4100p100pfrom schematic
C5100n100nfrom schematic
C847n47nfrom schematic
C91u1ufrom schematic
C1433n33nfrom schematic
C1682n82nfrom schematic
C1782n82nfrom schematic
C1833u33ufrom schematic
C19100p100pfrom schematic
C147n47nfrom schematic
C2100u100ufrom schematic
C347u47ufrom schematic
C610u10ufrom schematic
C108n28.2nfrom schematic
C118n28.2nfrom schematic
C1233u33ufrom schematic
C1333n33nfrom schematic
C1533u33ufrom schematic
C20100p100pfrom schematic
C23100p100pfrom schematic
Diodes 2
D21n40011N4001from schematic
D51N41481N4148OCR
ICs 2
IC3TL072TL072OCR
IC6A558A558OCR
Potentiometers 1
LEVELA100KA100kPotentiometerOCR