This stage was found in a 1964 Electronic Design. The transistors are of the time and the shape of the signal obtained is shown in the diagram.
We found this circuit in a 1980s American documentation. The operational amplifiers of the...
This circuit is intended to manipulate a transmitter (CW) from coded audio signals recorded on a...
This amplifier can be powered with voltages between 2 and 5 V with power up to 100 mW. The minimum...