Re: 2N3819 Junction gate field-effect transistor (JFET)
There are soe designs of HF transceiver where the same IF and IF filters and diode-ring mixers are used in one direction for receiving, and in the other direction for transmitting. These need 'bilateral' amplifiers which can be switched to amplify in one direction or the other. One design used for this, and which avoids lots of RF switches is to use a carefully chosen symmetric J-Fet and to switch the DC power feed from one end to the other.
David
__________________
Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done
|