With this circuit from the September 1989 issue of Radio Electronics magazine, it is possible to receive VLF band signals on a common radio, just like the signals emitted by the previous receiver.
We find this conventional amplifier with complementary transistors in a 1987 documentation. The circuit...
The circuit is a multivibrator version using two NPN general purpose transistor. This circuit can...
The circuit shown in the figure is suggested by Intersil (www.intersil.com) and makes use of the...