R. Jayapal, senior deputy GM of Bharat Heavy Electricals in Trichirappalli, India, received a a BE (Hons.) from Annamalai University, India, an M Tech from IIT, Madras, and a PhD from Regional Engineering College, Trichirappalli. Email address: try_kannajay@sancharnet.in
4 results found for R. Jayapal, displaying items 1 - 4
October 25, 2007[Ideas For Design] Microcontroller Interface Delivers Standard 4- To 20-mA Output
Voltage-to-current converters that feed grounded loads are common in industrial measurement and control applications. The conventional "textbook" circuit uses both positive and negative supply rails. An earlier article by this author titled "Voltage-To-Current Converter Works From A Single Supply Rail" (Electronic Design, Feb. 17, 2003, ED Online 2985) described a circuit that could power grounded loads and needed only a positive ...
July 6, 2006[Ideas For Design] Drive Multiple Displays With A Single Microcontroller Port Line
Seven-segment displays are needed in many instrument designs. In conventional microcontroller-based designs, four output port lines are allocated for one seven-segment display. Figure 1 shows the conventional design for four seven-segment LED displays. In this case, two eight-bit output ports are needed for four seven-segment displays. Figure 2 shows another popular...
