Output Coupling Inductors
Inductors on the output of an amplifer are used to isolate the amplifer from capacitive loads at HF and ensure stability. There has been quite some debate on DIYaudio.com as to whether they are audible, necessary, or just the result of designers being overly cautious. Some very well known designers in the field have decided against using […]
Oscillation Sniffer
No ‘scope? This simple circuit can help you quickly see if you have any oscillation problems on your opamp or amplifer circuit. Note, its NOT designed to be connected to high impedance nodes. Oscillation Sniffer by Bonsai
The Monolithic Op-Amp: A Tutorial Study
This was an invited paper at the ISSCC in 1974 by James Solomon, who at the time worked for National Semiconductor (acquired in 2011 by TI). Those were heady days in semiconductors, with major process and circuit design breakthroughs taking place at breakneck speed. The general purpose microprocessors’ pivotal role in powering the Apple II […]
12 point checklist for anyone using opamps in an audio design
Opamp User Guide V1.0.pdf