Phill Levya is an engineering manager with Maxim Integrated Solutions Inc., Sunnyvale, Calif. He holds a BSEE from San Jose State University, Calif. Email address: Phill.Leyva@maxim-ic.com
7 results found for Phill Leyva, displaying items 1 - 7
August 14, 2008[Ideas For Design] Driver Offers Proportional Solenoid Control Without PLC, Microcontroller
The proportional-control solenoids used in some industrial hydraulic systems are usually driven by microcontrollers or programmable logic controllers (PLCs). Such complex drivers typically require several different supply voltages for logic and control. (The purpose of proportional control is to move the solenoid plunger to an arbitrary position and leave it there.) A set-and-leave solenoid driver, however, should not require a costly PLC or the...
February 3, 2003[Design View / Design Solution] Feedback Encoder Types
To attain accurate positioning, a servo system requires a feedback signal to close its feedback loop. Instruments that typically supply the feedback signal include optical encoders, resolvers, and quadrature magnetostrictive linear-displacement...
February 3, 2003[Design View / Design Solution] Fault Types
Opens, shorts, and a condition in between the two are the faults most obvious at the system level. Motors and feedback encoders are usually located tens to hundreds of feet from the servo-system controller/amplifier. Connectors terminate these long...
June 24, 2002[Ideas For Design] Low Voltage Powers Parallel-Port Interface
For portable-sensing and data- acquisition applications, a laptop computer and its parallel port (LPT) make good bedfellows. Yet in the effort to extend battery life, many microprocessors and entire systems operate with logic levels down to 1.8 V. The...
October 1, 2001[Ideas For Design] Switch-Debouncer IC Creates A Long-Period Timer
One major application for long-period timers is in remote weather-data stations. These stations measure environmental conditions at regular time intervals and transmit the results to a central collecting facility. Since these small weather stations...
July 9, 2001[Ideas For Design] Low-Cost, 24-V Industrial Controller Is ESD-Protected
To validate a new process before its full-scale deployment, developers first test it in a small-scale pilot plant. Although controlling this plant with programmable logic controllers (PLCs) would allow maximum flexibility, PLCs are too large and...
