This circuit was found in a Popular Electronics documentation from the 90s. It is possible to switch the frequency of an oscillator by voltage. The circuit can act as a shield.
The circuit shown enables dynamic diode testing with an oscilloscope. We found this configuration in a...
The circuit shown in the figure is quite interesting in control and alarm applications. This...
This different power control circuit with SCR was obtained from a 1967 magazine. The SCR can be...