This circuit for the 3 to 6 MHz band was found in a 90s Popular Electronics. The components of the network formed by C6 depend on the frequency range to be covered.
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,...