This circuit was found in an Electronics Now from the 90's. See the previous article for the assembly of the detector head.
This amplifier must be supplied with a voltage of 24 V and the resting current is of the order of 4...
This circuit is from a magazine 73 for radio amateurs of the 90s. The circuit generates the high...
This circuit generates quadrature signals in frequency that depend on the 18 pF capacitors. These...