Anthony H. Smith is a consultant engineer with Scitech, Bedfordshire, U.K. He received a BSc (Hon) in electronics from Salford University, Greater Manchester, U.K. Email address: tony.scitek@tiscali.co.uk
5 results found for Anthony H. Smith, displaying items 1 - 5
August 3, 2006[Ideas For Design] Control A High-Power Load With A Low-Power Microcontroller
Many microcontrollers feature a pulse-width-modulated (PWM) output that can be low-pass filtered to produce a variable dc voltage. Without additional circuitry, however, this technique is limited to controlling very low-power loads. The circuit here illustrates a scheme that lets this dc voltage control a high-power load, such as a motor, actuator, or heating element (see the figure). Furthermore, the load voltage may be higher...
July 22, 2002[Ideas For Design] Simple Technique Generates Precise HART Waveforms
Designed to complement conventional 4- to 20-mA analog signaling, the Highway Addressable Remote Transducer (HART) protocol supports two-way digital communications for process measurement and control devices. The protocol uses frequency-shift keying...
