We found this circuit in a 1967 Electronic design. However, it can be easily implemented even today as it uses only common diodes.
This circuit, which uses only common transistors, was obtained from a 1988 publication, but can be...
This circuit was found in a 1980s documentation. Modern general purpose transistors can be used....
We found this circuit in a publication for radio amateurs of 1976. The operational amplifier is a...