This circuit was taken from an article in Electronics Now magazine in February 1995. The power supply must be dual and other operational amplifier can be used.
This excellent quality transistor amplifier using Darlington transistors was found in a 1980s...
We find this circuit in an American 1980s documentation. Modern equivalent integrated circuits can be...
This circuit is intended to manipulate a transmitter (CW) from coded audio signals recorded on a...