This circuit detects changes in magnetic flux in a coil as an external magnetic field moves. The circuit is from Electronics Now magazine, October 1996.
This conventional series reducer circuit reduces the voltage of a 12 V battery to the selected value...
In the figure we have a converter that generates a negative voltage from a positive voltage...
This circuit covers the bands from 1.8 to 150 MHz, with plug-in coils whose characteristics are...