This circuit was found in a Popular Electronics from the 90s. The circuit uses a general purpose JFET. The coils depend on the signal range that must be amplified.
This circuit provides a delay that depends on the components on the RC network. The formula for...
This circuit for professional telegraph handlers automatically produces points and dashes. The...
July 2017 - Diodes Incorporated's ultra low voltage drop voltage (ULDO) AP7380 regulators can now...