Found in a Motorola documentation from the 70s, this circuit makes use of transistors of the time. Modern equivalents can be used. The diode also supports an equivalent.
This circuit, from a 1998 documentation, allows to obtain more power for the radios and amplifiers of...
This simple basic circuit that appears in several places on this site from various sources is from...
This simulation shows how can we test a capacitor using a function generator and oscilloscope. The...