With this circuit found in a 1965 Electronic Design, it is possible to read a peak voltage of up to 250 MHz signals.
This circuit produces a warning signal with the programmed current that can reach 4 A. The circuit is...
Found in an old American documentation this FM modulator makes use of a varactor diode. The...
This circuit was obtained in Motorola documentation from 1969. The transistors are from the time...