We found this circuit in the 1964 RCA transistors manual. The transistors used are uncommon today, but they can be used equivalent. The circuit controls the operation of a heating element.
This circuit converts sinusoidal signals into squares and can be powered by voltages from 1.5 to 5...
Found in a 1969 Electronic Design, this circuit is intended to power a load up to 300 mA....
This amplifier was published in the July 1961 Radio Electronics magazine. It announced the release of...