Based on an OTA LM3600 operational amplifier, this circuit was found in the July 1988 issue of Radio Electronics magazine. The range is 6 Hz to 6 kHz and can be changed.
This circuit was found in a 1960s General Electric unijunction transistor manual. The circuit can...
In the figure we have the configuration of a variable voltage regulator with two transistors and a...
This circuit was found in Raytheon's 1967 documentation. The circuit uses an operating of the era,...