We found this circuit in an old General Electric documentation. In fact, PUTs are not common components today. The circuit is valid as a reference.
This circuit can be used to measure the frequency of a low frequency square signal. The signal can be...
This low power audio amplifier was found at 1992s Popular Electronics. Transistors are general...
This circuit is used to test an inductor (coil) allowing the observation of its opration in an R-L...