Suggested by Motorola in 1968 documentation, this circuit has an efficiency of 70%. Power transistors are types of the time as are transformers.
Suggested by Texas Instruments in 1980s documentation, this circuit uses a component of the era....
In the figure we have an amplification stage with FET in the source follower configuration. The circuit is...
New Series is Supported by START to Optimize Software Support and Includes Rich Features in 4 KB...