PC Assembly Combines The Functions Of Three Boards In One

Combining the functions of three separate boards commonly used in a variety of three-phase power control applications, the FRS300 circuit, regulator and snubber assembly combines a half-controlled, three-thyristor/three-diode bridge rectifier to provide voltage and current regulation as well as snubber circuits for the three thyristors. The board's thyristor firing control circuitry achieves a voltage/current regulation capability that conventional six-pulse diode bridges cannot provide. And because of simplified gate trigger and snubber circuits, the board offers OEMs a low cost, compact solution. Its proprietary CMOS circuitry also features phase reference sensing without transformers, equidistant gate delay, transformer-coupled gate drive, phase-loss sensing, 50/60 Hz operation and soft-start capability. Pricing is $194 each in OEM qty.