Found in American documentation from the 1990s, this circuit uses coils with multiple outlets to get the best reception, the diode is a general-purpose crystal diode.
Found in old documentation, this circuit makes use of amplifiers of the time, uncommon today. Next...
Although quite simple, the usefulness of this circuit is great. It can even mean gains for those...
This circuit converts inductances on two scales into voltages. The circuit was obtained from a...