This circuit is from an old Popular Electronics. The circuit is based on a 555 and a 5V voltage regulator.
May 2016 - It can be obtained from Mouser Electronics new microcontrollers from Texas MSP430...
This circuit is from a 1986 Revista Española de Electrónica. It consists of an amplifier with...
This differential amplifier with high input impedance is used in instrumentation. Other...