Electronic Design and Family Site

A MAX038-Based Function Generator

Front view of the MAX038-based Function Generator

My bench function Generator is a homebrew MAX038-based unit featuring about 6Vpk-pk output, a low-Z speaker output, Sine/Triangle/Square outputs, and a frequency counter for frequency accuracy.

The frequency counter is simply the Weeder counter slightly modified for my application. See the above link for details.

The Schematic

Schematic of the MAX038-Based Electronic Function Generator

PCB Layout - Bottom Side

Bottom view of the PCB for the MAX038-based Function Generator

PCB Layout - Top Side

Top view of the PCB for the MAX038-based Function Generator

Faceplate Artwork

Faceplate artwork for the MAX038-based Function Generator

The Frequency Counter

 

The frequency counter that I use for all of my projects (BitX20 Xcvr and MAX038-based Function Generator) is simply the Weeder Technologies counter using my own PCB Layout (shown below) and modified preamp section.

PCB Bottom View

Bottom view of the PCB for the Frequency Counter used on the MAX038-based Function Generator

PCB Top View

Top view of the PCB for the Frequency Counter used in the MAX038-based Function Generator