OpAmp Booster SMD

This op-amp booster PCB is based on the Micro Amp circuit and includes several tone settings. All components are pre-assembled, only the potentiometer and DIP switch need to be mounted to complete the build.
Steps
  1. Overview
  2. PCB
  3. Enclosure and wiring
  4. Drilling template
Categories
Tayda Electronics Kits, DIY Projects, DIY Guitar Effects
Created by DHEA
Status: Active
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PCB Step 2 of 4

COMPONENTS

PCB
PCB                     OPAMP BOOSTER SMD PCB

Potentiometer        
GAIN    500k-C    500KC ANTI-LOG TAPER POTENTIOMETER

DIP Switch
DIP SWITCH 2 POSITIONS (Optional)

Connector
4 PINS XH-2.54 MALE CONNECTOR (Optional)

 

PCB

SCHEMATIC

 

DIP SWITCH SETTINGS

Use a DIP switch for versatility, or wire jumpers to create a fixed configuration. With the switch in the "ON" position, the circuit is closed (shorted), which is the same as creating a permanent connection with a wire jumper.

  S1 ON, S2 OFF: Linear frequency response (original setting).

  S1 OFF, S2 OFF: High shelf filter with 6dB bass attenuation. 

  S1 ON, S2 ON: Low shelf filter with 6dB treble attenuation.

  S1 OFF, S2 ON: Band filter with 6dB mids attenuation and 6dB overall gain attenuation.

 

The figure below shows the frequency response of the tone circuit for each configuration

 

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