In this paper, a new Low-Cost Radio Frequency
system (LCRF) for auxiliary heating of confined plasma in
Tokamak machine is proposed and simulated. This system
consist of a switch mode power amplifier (PA) with output power
about 10kW, consists of a tetrode with the grounded cathode and
a FET switching circuit. The proposed switch circuit provides the
desired voltage level to drive the high power amplifier. This
design because of reduction the components and the numbers of
the movable tuning elements is more flexible and more reliable
than the common ones. With above discussion, the proposed
circuit can be applied as sufficient radio frequency heating
system for auxiliary heating in small Tokamaks.
کلید واژگان :
Power amplifier, Radio frequency heating, Tetrode, Tokamak.
