In ion analysers, which of the following serve the dual purpose of controlling the operating current of FET and providing current gain?
A. FET itself does it
B. SCR
C. Op-amp
D. Diode
Answer:C
In ion analysers, which of the following serve the dual purpose of controlling the operating current of FET and providing current gain?
A. FET itself does it B. SCR C. Op-amp D. Diode
Explanation: In ion analysers, op-amp serves the dual purpose of controlling the operating current of FET and providing current gain. Two FETs are operated as source followers.