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.
In the figure we have the shot made by an interrupted light beam using a phototransistor or a...
Using a CA3130 operational amplifier, this circuit from a 1977 documentation can handle low...
This is the receiver for the CB1364E transmitter. Other receivers can be found in this section of...