This circuit is from a factory manual from the 80s. The circuit can be implemented with modern operationals. The supply must be symmetrical, and the diode is general-purpose.
Using a new Maxim integrated circuit (www.maxim-ic.com) the amplifier shown in the figure can be...
This modulator can be used in a data link or other signals up to 200 kHz. Range can be achieced...
Found in a 90s 73 magazine, this circuit uses an unusual component today which is the XR2206. |...