DC-DC Converters are circuits designed to match loads to the power sources available. Generally, they accept power input at one voltage and supply one or more loads requiring power at different voltage levels.

The majority of modern printers use steppermotors and solenoids for driving the various transport and print mechanisms. These applications usually involve using drive signals directly from the control logic; and handling high-pulsed currents and voltages.

This Application Note describes the product range, important package characteristics (including construction and thermal characteristics) and typical applications of the Zetex Semiconductors range of Centre Collector E-Line transistors.