Profile: TREK, INC. designs & manufactures electrostatic measurement instruments, sensors & monitors, and high voltage amplifiers, power supplies & generators. Our high-voltage amplifiers include an automatic crossover compliance limit or current trip feature for protective shut-down. These amplifiers are protected against output short circuits and over voltages. These amplifiers are used as high-voltage power supplies in some applications. Our charged plate monitors can be used for ionizer testing, ionizer maintenance and other ESD applications.