This circuit was found in an old documentation, being able to generate signals of frequencies in the range of 50 to 100 MHz. The components are of the time.
This circuit, from a 1988 documentation, consists of an automatic temperature control using an NTC...
This power supply, found in an Argentine publication from the 1970s, uses a wire potentiometer of 25 W or more...
With this type of circuit, it is possible to obtain high input impedances and, at the same time,...