This precision reference circuit was found in documentation from the 1980s. It applies to other operational amplifiers. The power supply must be symmetrical.
This sound effect circuit uses only one integrated. We found it in a 90's EDN. The effects can be...
This circuit was suggested in an article in Radio Electronics magazine in January 1992. Other...
The bipolar transistors can be the BC548 and the FET a BF245. This configuration has a time...