This Schmitt trigger that converts rectangular signals to square signals was found in the January 1994 issue of Electronics Now magazine. The circuit uses common general-purpose transistors.
This 1992 circuit operates in the range of cordless phones used at the time. The circuit is based...
This different circuit uses a relay as an oscillator, whose frequency is determined by C1, and to...
This antenna or booster amplifier operates with signals from the midband (MW) range up to the VHF...