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FAQ# 26: How do I pick a voltage regulator that will be good for my circuit?
Steve Sandler Answers Your Voltage Regulator Questions (Power Electronics’ Q&A Series) Power Electronics received a question about how to...
Picotest
Sep 5, 20131 min read
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FAQ#25: How do you measure PSRR of a linear regulator circuit that powers an oscillator for an ADC?
Steve Sandler Answers Your PSRR Questions (Power Electronics’ Q&A Series Follow Up) Earlier this month Power Electronics received a...
Picotest
Aug 27, 20131 min read
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How to Solve 8 of 10 Design Issues
The vast majority of design issues are directly or indirectly attributable to control loop stability. The most common offenders: Linear...
Picotest
Aug 27, 20131 min read
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Inductors for the Uninitiated
What could be simpler than inductors? Pick one from a catalog based on saturation, inductance, DCR, etc, and you’re done. If you need...
Picotest
Aug 20, 20131 min read
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Target impedance based solutions for PDN may not provide realistic assessment
One of the more common design techniques for power distribution networks (PDN) is the determination of the peak impedance that will...
Picotest
May 1, 20131 min read
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How to Make Higher Voltage Power-Distribution-Network Measurements
Assuming the AC signals in the measurement are very small, the power ratings of the ports limit the absolute maximum DC voltage that can...
Picotest
Jan 23, 20131 min read
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Clock Power Optimization Depends On Jitter Control
Clock-jitter performance has become a top priority among clock, analog-to-digital controller (ADC), and power-supply manufacturers. Why?...
Picotest
Oct 23, 20121 min read
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Assessing Point-Of-Load Regulators Using Non-Invasive Techniques
Evaluating the stability of a Point-Of-Load (“POL”) regulator can be performed using both traditional Bode plot and output impedance...
Picotest
Sep 28, 20121 min read
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Making Ripple Measurements
Making ripple measurements has traditionally been using an oscilloscope. For a number of technical reasons, an oscilloscope, in general,...
Picotest
Sep 4, 20121 min read
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Sharpen Rising and Falling Edges
Wherever you find a digital control signal, you find sharp rising and falling edges that need characterization. These edges occur on...
Picotest
Aug 20, 20121 min read
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Use A Signal Analyzer To Measure Power Supply, Regulator, and Reference Noise
Oscilloscopes often are used to measure power supply, linear regulator, and reference noise. Since an oscilloscope has a sensitivity in...
Picotest
Aug 6, 20121 min read
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Making Sense of Two-Wire Current-Sense Resistors
Using a simple, but precise test set up, measurements are taken on a 1-m? 5% metal-foil current-sense resistor mounted to a small PCB....
Picotest
Aug 1, 20121 min read
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Low Power And High Efficiency Can Degrade Performance Significantly
The general industry trend is to make electronic products more efficient and, in general, consume less energy. One of the major...
Picotest
Jul 30, 20121 min read
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Understanding the Data Sheet Key to Effective Circuit Design
While the graph of Fig. 1 seems straightforward, there are several issues that become apparent when one tries to make sense of what the...
Picotest
Jun 26, 20121 min read
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Effectively Using the EM-6992 Near Field Probe Kit to Troubleshoot EMI Issues
The EM-6992 Probe Kit includes three magnetic (H) field and two electric (E) field passive, near-field probes and an extension handle...
Picotest
Jun 22, 20121 min read
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How To Measure Ultra-Low Impedances
Maintaining clean, regulated voltage requires more than a high-quality power supply. The power distribution network (PDN)—which, together...
Picotest
Jun 15, 20121 min read
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Making The Connection Key To Accurate Test Data
We often give even less thought to how we connect our circuits and systems to the test equipment that we use to power and measure the...
Picotest
May 31, 20121 min read
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Troubleshooting EMI: Use Versatile Instrument And Preamp To Search For Embedded Noise
Most engineers do not have convenient access to the equipment necessary for electromagnetic compliance (EMC) or electromagnetic...
Picotest
May 24, 20121 min read
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When Bode Plots Fail Us
It may come as a surprise to some that a control loop’s Bode plot does not always depict the loop stability and that the output impedance...
Picotest
May 22, 20121 min read
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Evaluate Feedback Stability When There’s No Test Point
Fortunately, a new technique permits non-invasive stability testing of such devices.1 Designers can evaluate stability by measuring (on...
Picotest
May 16, 20121 min read
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