By Reza Bahadur, October 02, 2008
DIGITALLY CONTROLLED POTENTIOMETERS (DCPS) find uses in a wide variety of systems for setting bias currents, variable reference voltages, and calibration settings. In industrial control and automation applications, high accuracy is a must. DCPs w
By Tamara Papalias, June 07, 2007
Systems requiring power conversion and level detection employ full-wave rectification, traditionally provided by a diode bridge. But diode bridges consume a significant amount of board space and reduce signal amplitude. An alternative solution involv
By Tamara Papalias, February 01, 2007
The standard way to measure the peak of a signal involves the use of a diode. But if the diode is used alone, the input voltage must be significantly larger than the diode's turn-on voltage to obtain acceptable accuracy. Because turn-on voltages rang
By Tamara Papalias, April 27, 2006
Communication systems often require large ac output coupling to remove dc voltage on the transmission line and to isolate ground connections between transmit and receive systems. Generally, a feedback network is used to minimize the output capacitance. Ye
By Mike Wong, March 31, 2003
A TFT LCD panel requires three voltages: VDD, VON, and VOFF. VDD, typically 13 V, powers the video signal path. VON, usually 25 V, supplies the turn-on gate drive bias voltage for the TFT cell....