I've been looking around at the various MOSFET based circuits out there, mainly from "What can I build? (https://dvhx.github.io/what-can-i-build/search.html)", and came across some things, all probably old news and deep lore™
I ducked out of DIY in 2012/3 and came back about a decade later, for reference. I found a couple of posts here, but wondered if anyone can share light on who made the MOSFET boost first, because the circuits are looking rather similar. Obviously, only a few components can constitute a big difference, and maybe I'm nuts.
(https://i.imgur.com/WckVGLr.jpg)
I was looking at the Firecracker, Landgraff Clean Boost, and z*ex SHO, and wondered if one came before the other. I tried backtracing the Firecracker from mirosol's tagboard, before finding what appears to be the original schematic, with a "this is for DIY only" disclaimer. I'm out of it enough not to know when John debuted his boost. And I only know that, like many others, if you use the brand or circuit name on a Reverb ad, you get a takedown from the ghost of Randy Savage.
Firecracker has a different biasing method, from what I see, but some of the bits look very similar.
The true answer is that the original design from which all these came is the Jack Orman Mosfet Boost circa 2001.
In fact, if you Google this text
Jack Orman Mosfet Boost
you will find a hidden portion of the mbp website!
Quote from: madbean on December 14, 2025, 03:40:08 AMa hidden portion of the mbp website!
Seriously.
Great bit of history there! But man, what can't we trace back to Jack? Thanks, Brian.
Quote from: madbean on December 14, 2025, 03:40:08 AMThe true answer is that the original design from which all these came is the Jack Orman Mosfet Boost circa 2001.
In fact, if you Google this text
Jack Orman Mosfet Boost
you will find a hidden portion of the mbp website!
Well of course I had to go check it out! Very cool bit of how the ol beanster got started.
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