This is a commercial circuit from the year 1958. Transistors are germanium types and transformers and coils are hard to fild today. The circuit is destinated to the reception of medium wave stations.
Factor Q measures the selectivirty of a resonant circuit and also receivers. This circuits cen...
This circuit was suggested by Popular Electronics from the 90s. The circuit is quite simple using...
Found in a 1969 neon lamp publication, this circuit provides two voltages under very-low currents....