Tech Note

TECH NOTE: Adding Protection when Switching Inductive Loads

This technical paper will explain the importance of adding protection to the load terminals in all inductive load switching applications by reviewing important inductor behaviors.   Topics Discussed: Inductor Behavior Using Simplified Low-Side Switched Inductor or Relay Coil (Sinking) Examples RL Charging (Storage) Cycle RL Steady State (Fully Charged) Traditional RL Discharge Cycle without Protection but…

TECH NOTE: PMC and XMC Modular I/O

PMC and XMC Modular I/O – Established Standards in High Performance Systems The IEEE standard for PCI Mezzanine Cards (PMCs) initiated the first successful approach to truly modular I/O devices. Subsequent development has presented system integrators with the XMC modules, introducing support for switched interconnect protocols, adding contacts serial lanes for high-speed data transfer, and providing better…

TECH NOTE: i2o Peer-to-Peer Communication

Acromag i2o® Peer-to-Peer Communication Technology The easiest way to link remote inputs to output devices without a controller Many BusWorks XT, BusWorks 900EN, and EtherStax I/O modules have the ability to operate like a long-distance transmitter using i2o technology. Reproduce your sensor inputs at Point A as 4-20mA control signals at Point B. Or, monitor a discrete device at…

TECH NOTE: Speed for A/D Converters

In this article, we will consider the basic conversion methods that are commonly implemented on commercially available boards and how these methods affect the throughput and accuracy of the data. Some Important Terms Resolution – The number of discrete values that a converter can produce over the range of analog values. A 12-bit A/D converter…

TECH NOTE: A to D Digital Converter

Inside a Multiple Channel Analog to Digital Converter We will look at a common technique to implement A/D conversion in a Commercial Off-The-Shelf (COTS) board. The information is helpful in determining how to wire a system with multiple A/D sources. A/D Sampling Techniques Multiplexing Inputs A very cost-effective way to implement an A/D conversion board…

TECH NOTE: Building A/D Applications

Building A/D Applications from a Simple Base Can Minimize Problems Downstream A common task of real-time systems is to extract information from the real world in a form that can be manipulated by a computer to make logical decisions. Converting real world phenomena like music, earthquakes or air temperature to a proportional voltage is a…

TECH NOTE: FPGA Modules with an Integrated Processor Drive Real-Time Applications

FPGA Modules with an Integrated Processor Drive Real-Time Applications Engineers developing DSP and high speed logic applications are now well-aware that FPGAs can help them create an integrated, sophisticated solution. The availability of commercial off-the-shelf (COTS) FPGA boards can make these solutions viable and do so in reduced development times. Today, with systems architected to…