This power control circuit was found in General Electric documentation from 1969. The table provides the components for different types of loads. The integrated circuit is uncommon today.
This transmitter operates with a voltage of only 1.4 V, and can then be powered by a single...
Found in an Electronic Design of 1964 this circuit has a control for the frequency and another for the...
This old circuit, from the 80s, was found in American documentation. The circuit uses dual gate...