Found in an Electronic Design from the 90s, this circuit makes use of integrated regulators of the time. These components must be provided with heat sinks.
This circuit was found in a Mullard transistor manual from 1960. Note the symmetrical power...
This amplifier step with a transistor has an input impedance of 100k to 10 M. The transistor can be any...
I found this little signaling transmitter in old American documentation. The circuit has a good...