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.
We found this simple timer in a Raytheon documentation from the 60s. The transistor is made of...
This amplifier uses common transistors and provides a power of 2 watts in a speaker of 4 to 8...
Published in Radio Electronics magazine in May 1963, the purpose of this circuit is to visualize the...