Posted in My library

Between Amplifier and Speaker - Ivor Brown, Electronics & Wireless World, Feb 1995

Making the Best of an Audio Transformer - Norman H. Crowhurst, Audio Engineering, 1953

A great little utility called ResCalc - that calculates series/parallel resistor values for you to get that non-standard value. Written by Mark Lovell and Morgan Jones.

Everything about RFI, ground loops, pin 1 problems etc for audio. An extensive library well worth perusing! Generated and/or collected by Jim Brown at Audio Systems Group

One of the best I/V stage design I ever saw is from Michael Smeedegaard, presented in his # 4326 AES preprint: "Low Input Impedance Current to Voltage conversion circuit for Current-Output DACs"

John Linsley Hoods' Linear AC amplifier Liniac - simple but high performance.

An 'ideal diode' - from Linear technology

A vintage (1963) AES paper by Langevin about IM in tape recorders.

Contribution by John Curl related to the LT1166 bias chip. The measurement circuit is here and the measurements are here.

By popular request: here is Barrie Gilberts (in)famous paper Are Opamps really Linear?

Forces in Capacitors: A study on the acoustic emissions due to mechanical vibrations in capacitors caused by magneto- and electrostriction.

Even if one million astronomers believe something, that doesn't make it true - a remarkable story about the human condition. An excerpt from Carl Sagan's "The varieties of scientific experience".

Extensive treatise by Kendall Castor-Perry about decoupling and bypassing. This is very detailed, covering a lot of angles and well-documented. A gem: Part 1; Part 2; Part 3; Part 4; Part 5; Part 6

Want to build one of my designs?

I am flattered but would also like us to agree on a few rules.

My designs are the best I can make them, including reliability and safety. A lot of effort, time and money goes into them, and I enjoy doing it.

Nevertheless, I have obviously no control over how, where or when somebody would use a design of me. Therefore, I cannot guarantee that it will do as advertised in all cases and circumstances. I also have to decline any and all responsibility for any damages, direct or consequential, resulting from the use of my designs. Sorry about that, but that's how my lawyer wants it...

If you want to build one for your own use, go ahead. It would be nice if you would let me know how it all works out.

If you like to use one of my designs for a commercial product, we can discuss the terms of such use. If you plan to make money out of them, I would like to have some compensation for my work and effort as well. Or, if you are in need of a design consultant for a project, let me know. I’m sure we can work something out to mutual benefit.