Author Archives: HardWired

Germanium transistors : Black Glass models

They were thus nicknamed in allusion of their very particular black glass case. Glass technology had been selected because at that time plastics were still unable to ensure a perfect seal between case and terminals. They have been the first transistors … Continue reading

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Dallas Rangemaster Treble Booster Analysis

The Dallas Rangemaster Treble Booster is a booster guitar pedal that especially emphasizes the upper mid and treble frequencies (coloring the signal). It was designed in London (UK) by Dallas Musical Ltd in 1965.  At that time, the British tube amplifiers such … Continue reading

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Mullard Semiconductors

Probably the largest manufacturer of early semiconductors in Europe was Philips of the Netherlands. As well as their own laboratory and manufacturing facilities in Eindhoven, Philips had three overseas subsidiaries: Mullard Ltd. in England. Valvo Gmbh. in Germany. La Radiotechnique … Continue reading

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1971 Simple Fuzz Box Article

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Marshall Supa Fuzz

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the AC128 transistor

31 January 2019 / by Jacques Charbit INTRODUCTION: The nanotube Silicium might be an endangered species. Progress around carbon electronics (nanotube and tripods) and nanotech are going so fast that a well-known Japanese TV brand is issuing next year a … Continue reading

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“5F” – The FAQ For Fuzz Face Fanatics

By Steve Daniels, Small Bear Electronics LLC © 2018 By Small Bear Electronics LLC This article answers some common questions about the transistors used in cloning and modifying the Fuzz Face and similar pedals. It is meant for beginners who … Continue reading

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Ultra Simple 9v VCF

This VCF (Voltage Controlled Filter) is made from a tl071 op amp chip, 6 resistors, 3 capacitors, 2 pots and a diode. The schematic is very simple, and takes about an hour to build (less if you’re good at this … Continue reading

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Lunetta based cd40106 NoiseBox

cd4049/cd40106 hex invert oscillators used for heart of custom noise pedal…

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Lunetta based cd40106 SharkWave VCo

https://www.schmitzbits.de/vco4069.html

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