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Designing Energy Meters with the PIC16F873A
electric utility companies desire to implement them. In this application note, we will discuss the implementation of a basic watthour meter using PICmicro(R) Flash microcontrollers. In the process, we will show how one ADC with a single sample-and-hold circuit can effectively measure both voltage
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Pipelined Analog-to-digital Converters (ADCs)
Analog-to-digital converters (ADCs) that use pipeline architecture effectively overcome the limitations of flash architecture. Pipelined ADCs divide the conversion task into several consecutive stages. Each of these stages consists of a sample and hold circuit, an m-bit ADC (e.g., a flash converter
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Subranging Architecture
), and a gain block to amplify and to restore the residue to an appropriate level for further estimation by the next stage. Basically, a subranging converter is similar to a pipelined converter, but without the sample-and-hold circuit.
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Brushless DC Motor Control Using PIC18FXX31 MCUs
Analog-to-Digital Converter (ADC). In this application note, the switch SW1 is used to. - Two sample and hold circuits. toggle between motor Run and Stop and SW2 is used. - Single/Multichannel selection. to toggle between the direction of motor rotation. Each. press of these buttons will change
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PMT Applications: An Overview
. In other words process the signals digitally. As the rate increases above this level, it is necessary to use analogue method such as integrators or sample and hold circuits to process the electrical signal. Even with analogue signal processing, the dynamic range of the photomultiplier can be as large
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Comparing analog and digital drives
a user's perspective, the main difference is in how the signals are obtained. Both the current and torque signals need to be converted to digital representations. This is done by a sample and hold (S/H) circuit and an analog-to-digital converter (ADC). The sample and hold circuit takes the value
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Getting To Know You
of tiny metal electrodes. Each column is linked to a pair of sample-and-hold circuits. The fingerprint image is recorded in sequence, row by row. Each metal electrode acts as a single capacitor plate, and the contacting finger acts as the second plate. A passivation layer on the surface forms
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Controlling 3-Phase AC Induction Motors Using the PIC18F4431
): It is assumed that the reader is already familiar with the. theory and nomenclature of AC induction motors. For an. · Two independent sample-and-hold circuits. excellent introduction to the basic concepts of induction. · Single or multi-channel selection. motors control, please refer to Microchip's