This circuit for a simple alarm system was suggested in an article in Electronics Now magazine. The circuit has a small power stage that can be changed.
In the figure we have a way of using a solar cell as a source for circuits with tunnel diodes. The solar...
This circuit for decoding QUAM AM stereo signals, a system that was little developed, was found in the...
This configuration is from an old Motorola publication from the 70s. In it we have the way to...