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Grady Keeton

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Calculate voltage drop to prevent system problems

Posted by Grady Keeton on Jan 20, 2017 3:24:54 PM

One of the problems we frequently encounter in the field is that power supply users fail to take into account the voltage drop in the wires connecting a power supply to a device under test (DUT) or other electronic system. When a load draws a high current, the voltage drop across the power leads could be high enough to cause a device under test to fail or cause a system to malfunction.

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Topics: AC Power Sources, calculate voltage drop, DC Power-Supplies, voltage drop

Know your power supply jargon: resolution and accuracy

Posted by Grady Keeton on Jan 10, 2017 10:35:41 AM

Two terms that often get bandied about when describing automated test systems are resolution and accuracy. To get the best results from your power supplies, it is important to understand the difference between these two specifications and how they affect your system.

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Topics: AC Power Sources, accuracy, DC Power-Supplies, resolution

Analog control for a power supply still a good choice for many applications

Posted by Grady Keeton on Nov 2, 2016 9:33:58 AM

While these days, computer control is usually the preferred method of controlling a power supply, many AMETEK Programmable Power products, such as the Sorensen SGA Series still offer analog control. Analog control is still used in many industrial applications, and it's also a good choice if you have fairly simple control needs.

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Topics: analog control, Analog control for a power supply, DC Power-Supplies

Power Source Multi-Box Configurations Meet a Variety of Needs

Posted by Grady Keeton on Oct 25, 2016 2:17:19 PM

Many of AMETEK Programmable Power's AC power sources are designed to work as both standalone units and in multi-box configurations. The California Instruments iX Series AC/DC power sources, for example, includes independent 5 kVA power modules that can be combined into a number of configurations. You might use a single unit as a high-power, single-phase system or configure three units to form a medium-power, three-phase system. This modularity allows you to build a power system that meets your specific needs.

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Topics: AC Power Sources, iX Series, multi-box, Power source multi-box configurations

Introduction to IEC 61000-4-11, Part II - AC source requirements

Posted by Grady Keeton on Aug 2, 2016 10:04:39 AM

In Part I, we introduced you to the concept of testing equipment for immunity to voltage dips and short power interruptions in accordance with IEC 61000-4-111. In addition to specifying the test waveforms, the standard also specifies AC source requirements for full compliance testing.

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Topics: AC Power Sources, Compliance Testing

Introduction to IEC-61000-4, Part I

Posted by Grady Keeton on Jul 25, 2016 4:14:32 PM

Mains voltage dips and short interruptions can be caused by a wide variety of phenomena and can cause equipment to operate unreliability, and in some cases, can damage the equipment. Faulty loads on an adjacent branch circuit, for example, can cause a circuit breaker to trip, and high-power loads such as welders, motors and electric heaters can cause voltage variations. Natural events, such as power lines downed by storms or lightning strikes, may also disrupt mains power.

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Topics: AC Power Sources, Compliance Testing, voltage dip, voltage interruption, voltage variation, IEC-61000, IEC-61000-4, IEC 61000-4-11

Understanding AC Power Source Measurements, Part 4: Analog or Digital?

Posted by Grady Keeton on Jun 23, 2016 11:27:09 AM

I-IX_SII_Main_Image The California Instruments iX Series are AC sources that use a digital measurement system.
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Topics: AC measurement, AC Power Sources, iX Series

Understanding AC Power Source Measurement, Part 3: Power Factor and Crest Factor

Posted by Grady Keeton on Apr 26, 2016 10:19:33 AM

Programmable AC power sources are primarily used to provide a low distortion, precisely controlled sinusoidal voltage to a unit under test, but some AC sources, such as the California Instruments I-iX Series II, perform measurements as well. Part 1 describes the benefits of using sources for measurement and how to make voltage and current measurements. Part 2 describes how to make frequency and power measurements. In Part 3, we'll discuss how to make power factor and crest factor measurements using an AC power source.

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Topics: AC power measurement, AC Power Sources

Understanding AC Power Source Measurements, Part 2: Frequency and Power

Posted by Grady Keeton on Mar 31, 2016 10:23:32 AM

Programmable AC power sources are primarily used to provide a low distortion, precisely controlled sinusoidal voltage to a unit under test, but some AC sources, such as the California Instruments I-iX Series II, perform measurements as well. Part 1 describes the benefits of using sources for measurement and how to make voltage and current measurements. In Part 2, we'll discuss how to make frequency and power measurements.

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Topics: AC Power Sources, Frequency and power

Use the California Instruments' iX Series to Test at 800 Hz

Posted by Grady Keeton on Mar 16, 2016 3:47:49 PM

The California Instruments iX Series AC/DC Power Source / Analyzer delivers AC, DC, and AC+DC, transient waveforms and performs complex power measurements. While the standard frequency range of the iX Series is 16-500 Hz, it can deliver AC power at up to 1,000 Hz. Many applications, including commercial and military avionics testing, require an output frequency of 800 Hz. The avionics test standards that specify tests at this frequency include:

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Topics: 800 Hz, AC Power Sources

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