The use of field effect transistors in this circuit improves its performance. This configuration is from a 1975 circuit manual. The transistor can be any general-purpose FET such as MPF102 or BF245.
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. |...