This untuned (aperiodic) amplifier circuit was found in the August 1974 Radio Electronics magazine. The transistors are period, and the board layout is critical.
This circuit fires at the touch of a sensor, passing its output from high to low in a time given by...
This 9 V amplifier has a gain of 20 and provides a power of a few hundred milliwatts. The circuit is...
This circuit in its original version was found in an 1975 English publication. It is a...