This circuit was suggested by Signetics in 1980s documentation. The circuit makes use of the hard-to-obtain component of our day. It is for reference only.
This simple radio uses few components due the direct coupling of the transistors. Coil is formed...
Kemet offers by Mouser Electronics engineering kits containing capacitors, super capacitors,...
In the figure we have the way to obtain an adjustable 1 to 10 mAconstant current source. The...