The Difference Between Single vs. Three-Phase AC Voltage Most of us are familiar with the single phase voltage in our homes provided by the local utility. For the US, this is typically 120V. For single phase voltage, the voltage is expressed as a Line to Neutral voltage between two power conductors (plus a safety ground). […]
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MIL-STD-704F Pre-Written Test Standard Available with AC Power Sources Latest Test Standard Revision F Provides Up to Date Test Sequences for Mil-Std-704, AC Power Compliance Testing for Defense Avionics. Pacific Power Source is pleased to announce the release of its latest suite of test routines specifically designed to test AC products for compliance with Department […]
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This blog discusses the AC source generator voltage rise and fall time requirements as covered by section 6.1.2, Table 4 of IEC test standard IEC61000-4-11 Ed. 3 and section 6.1.1, Table 4 of IEC61000-4-34. Also included is a review of IEC61000-4-11 Ed.3, Annex D, sections 3, 4 and 5 that address this requirement in more […]
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What is Inrush Current? While inrush current has a peak current value, the term “Inrush Current” is commonly used to describe the current that is required to energize an AC powered device or product when first applying voltage and power to it. This is especially true for inductive loads such as transformers, Inductors and electric […]
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Simplify MIL STD 704 Testing with Pre-Written Test Sequences Pacific Power Source provides a suite of test routines specifically designed to test AC products for compliance with Department of Defense Interface Standard MIL STD 704, “Aircraft Electric Power Characteristics”. This software option expands Pacific Power Source Inc.’s growing portfolio of Avionics Compliance Test options. The pre-written […]
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What Is Programmable Impedance (Prog. Z)? Hate to disappoint, but programmable Z on an AC power source has nothing to do with getting sufficient sleep. Instead, the Z refers to the output impedance of the power source. A low AC source output impedance means there is little or no voltage drop at the output of […]
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Irvine, California, February 2022 — Pacific Power Source is pleased to announce the release of its latest suite of test routines specifically designed to test AC products for compliance with Department of Defense Interface Standard Mil-Std-1399-300, “Aircraft Electric Power Characteristics”. This new software option expands Pacific Power Source Inc.’s growing portfolio of Defense related Power Compliance Test options. […]
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What is the AC Power Input for my Application? Programmable AC power sources used for development and test applications convert locally available utility power to specific precision AC or DC output formats needed to test or control units under test. This is called “solid state power conversion” as active electronic circuitry is used rather than […]
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Power Supplies and Output Power rating versus Voltage As a rule, power supplies are rated for maximum power output only at their maximum output voltage. That means that as the programmed output voltage is decreased, the power output capability decreases proportionally. For example, a 10kW rated power supply with a 0 to 100V voltage range […]
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Remote Control Computer control of test equipment – including AC and DC power sources – is a critical requirement for building automated test systems (ATE) and to a lesser extend engineering development lab experiments. Key requirements for this type of computer control are: Reliable communication to reduce or eliminate communication errors Data transfer speeds Industry […]
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