Latching relay (CB25722E)

The figure shows how to connect a relay to obtain the latch effect. The circuit is from an Electronics Now from June 1994.

15V x 1A Symmetrical Regulator (CB15896E)
This circuit is suggested by National Semiconductor and can serve as a basis for an excellent...
Addicted Data (CB18782E)
This is a circuit that should not be used for readers interested in a fair game. The circuit...
VCO 4049 (CB15463E)
A simple version of VCO CMOS using 4049 inverters is shown in the figure. This circuit can be...