Tag: preamplifier
Simple jFet preamplifier – jBoZ – July 2024 progress
I have finalized my project with some minor inclusions. The biggest change is that I decided to follow the H2 v2 schematics published by Nelson Pass on diyaudio as an alternative setup. This uses the cheap and available J113 jfet instead of the 2SK170. And uses a potentiometer in series with the loading resistor to…
Simple jFet Preamplifier – jBoZ – Progress June 2024
I made a few changes to the schematic and PCB. The biggest one was to create a jfet footprint that supports both DGS and DSG packages. The idea came from the PCBs designed by Passworks for the 2022 DIY front-end, published at diyaudio. Basically, it allows a plain 3-pin symbol for the schematics, and defines…
Simple jFet Preamplifier – jBoZ – New Project
Catching up with my numerous projects, it’s time that I revisited my version of what became popular in diyaudio and pass labs circles as the jBoZ preamp. There is nothing particularly critical about the circuit. It’s pretty much a simple jfet circuit, very close to what one can find in electronics tutorials. Below you can…