Found in an Electronic Design of 1964 this circuit has a control for the frequency and another for the active cycle the signal. The bipolar transistor can be a general-purpose type.
This circuit was found in a publication of the year 1968. It uses complementary transistor to...
Found in a 1980s documentation, this circuit uses as base a component of the era. The formula for...
This loader has configuration already explored in other articles on the site. This is from an old...