J. Jayapandian, senior scientific engineer, received a master's in both physics and philosophy in solid-state physics from the University of Madras and Barathidasan, Tamil Nadu, India. Email address: jjp@igcar.ernet.in
4 results found for J. Jayapandian, displaying items 1 - 4
December 11, 2008[Ideas For Design] Micro-Structured Transducer Accurately Measures Pressure
Today’s micro- and nano-structured sensors boast excellent linearity, resolution, and wide measurement ranges. As a result, microelectromechanical systems (MEMS) are playing an increasing role in many more applications. This design describes a novel use of such a sensor—a non-contact differential variable-reluctance transducer (NCDVRT)—in the pressure port of a system. The application involves the selection of a stainless-steel membrane and...
February 17, 2005[Ideas For Design] LPT Port Drives Programmable Slewing-Voltage Control
This design modifies a simple first-order, low-pass filter into a slewing-voltage control that is programmable for its slope and amplitude through a PC's LPT port. These control parameters are typically required for metallurgy studies like corrosion of materials using a potentiostat. (A potentiostat, which is a standalone device, sets the required potential/second for the electrode under corrosion studies.) Figure 1 shows a circuit that supplies...
