ST. LOUIS, Nov. 24, 2010 — Portable Power Systems Inc. has introduced the PPS series high-power touch screen laser diode drivers. They are user friendly and offer a large, vibrant 5.7-in. 262,000 color thin-film transistor LCD touch screen graphical user interface display and offer “save” and “recall” configurations for voltage, current, pulse width and frequency. The units are available in either continuous-wave or quasi-continuous-wave formats. Voltage of up to 250 V and currents of up to 400 A can be realized. The operator can enter parameters via the touch screen by using a displayed key pad or an iPOD type control that is displayed. The units also can be controlled by a supplied RS-232 interface or an optional general-purpose interface bus.