Found in the July 1994 Electronics Now magazine, this circuit drives a relay up to 12 V depending on the power supply. The transistor can be general purpose.
This circuit is the transmitter for the previous project and also for what will come next. It is a...
This circuit was suggested by General Electric in 1969 documentation. It provides a maximum output of...
Found in an English documentation, this circuit provides a 50 Hz signal according to the local...