This filter configuration used in telecommunications uses 4 Jaumnann crystals that are interesting for low and medium frequencies. The circuit is from an 80's documentation.
In a bistable circuit, as shown in the figure, we use two sensors. When one of them is touched, the...
This circuit, found in a publication of the year 1968, uses a transformer to drive two power...
This sequencer allows the use of switches or sensors to generate the steps of a bipolar stepper...