This circuit implements a 3-way control, with outputs in A, B and C, using CMOS integrated circuits. I found this circuit in an old publication from 1978.
This circuit shows how to trigger and shut down an SCR using common pressure switches. The circuit...
In the figure we have the way to add hysteresis to an operational amplifier. The relationship...
The range of this transceiver found in an old national publication is of the order of 1 km. The...