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How Can You Measure a HUGE Inductance with DC Bias?
by Steve Sandler Published by Signal Integrity Journal, May 19, 2022 Most DC/DC converters and switching voltage regulators use filter...
Picotest
May 18, 20223 min read
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The Ultimate Power Rail Noise Measurement
by Steve Sandler Published by Signal Integrity Journal, May 5, 2022 I receive many questions about measuring power rail noise: Do I...
Picotest
May 4, 20221 min read
28 views
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Why EM Is Replacing SPICE For Simulation of Board-Level Power Delivery
How2Power.com - November 2021 by Heidi Barnes, Keysight Technologies, Santa Rosa, Calif. and Steve Sandler, Picotest, Phoenix, Ariz....
Picotest
Dec 2, 20212 min read
168 views
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Measuring pH and fF With a TDR Using a Cursor Measurement
"The time domain reflectometer (TDR) is an instrument that is often used to measure printed circuit board (PCB) test coupons and cable...
Picotest
Jan 14, 20211 min read
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Just How Fast is GaN Fast?
By Steve Sandler | March 12, 2020 “I recently designed an ultra-high speed, low-impedance pulse generator (Figure 1). I wanted it for...
Picotest
Apr 8, 20201 min read
22 views
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Measuring a Scope Probe Requires Two Oscilloscope Channels and a Very Flat Signal Source
Oscilloscope users can also calibrate their passive oscilloscope probes, though the process is much less sophisticated and for lack of a...
Picotest
Jun 27, 20191 min read
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Designing Power for Sensitive Circuits
What is a sensitive circuit? Sensitive circuits are those that can easily be degraded by power supply noise. These circuits generally...
Picotest
Apr 28, 20171 min read
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Top Three EMI and Power Integrity Problems with On-Board DC-DC Converters and LDO Regulators
Kenneth Wyatt Wyatt Technical Services, LLC ken@emc-seminars.comSteve Sandler Picotest steve@picotest.com Modern devices are...
Picotest
Apr 26, 20171 min read
33 views
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Optimizing Arduino and the AD9851 DDS signal generator
Arduino has taken the product “maker” world by storm and one of the more popular Arduino modules is the Analog Devices AD9851 DDS...
Picotest
Feb 12, 20161 min read
31 views
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Power Integrity: It’s not just decoupling caps
Read more here #vrm #design #flatimpedance #powerintegrity #articles #roguewaves #capacitors #picotest #pdn #regulator #targetimpedance
Picotest
Feb 12, 20161 min read
10 views
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How to measure the world’s fastest power switch
Gallium Nitride (GaN) FETS are poised to replace silicon power devices in voltage regulators and DC-DC power supplies. Their switching...
Picotest
Nov 13, 20152 min read
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Simple trick to measure plane impedance with a VNA
Having said all of this, the measurement of a PCB plane using a VNA may not be as straightforward as you might expect. One simple trick...
Picotest
Oct 8, 20141 min read
52 views
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Match impedances when making measurements
Recently, I used a shielded coaxial cable to measure power supply ripple and the results were even noisier than using an oscilloscope...
Picotest
Aug 15, 20142 min read
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Improve Performance And Reduce Cost
Engineers are under constant pressure to improve the performance of their products while reducing product cost. The key to doing so is a...
Picotest
Jun 19, 20141 min read
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SPICE models need correlation to measurements
Many SPICE models are available online that were created by IC and semiconductor manufacturers. Unfortunately, availability doesn’t...
Picotest
Jun 4, 20141 min read
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Software Enables Accurate Stability Test, Improves Non-Invasive Phase Margin Measurement Accuracy
The mathematics behind the non-invasive measurement was incorporated into the OMICRON Lab Bode 100 VNA software, sold by Picotest.com,...
Picotest
Apr 23, 20141 min read
37 views
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PCB characteristics affect PDN performance
Since no impedance path is perfectly flat, we need to make some design adjustments. This article aims to help you make compromises that...
Picotest
Mar 31, 20141 min read
19 views
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Measure PDN on a budget
There are many good analyzers available for measuring PDN High performance VNAs are available from all of the major test equipment...
Picotest
Mar 19, 20141 min read
19 views
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Understanding Voltage Response Of An LC Circuit
For an undamped LC circuit excited by an AC voltage source through simple phaser equations, we come to see that the circuit becomes short...
Picotest
Mar 18, 20142 min read
12 views
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Measure small impedances with Rogowski current probes
You’re probably familiar with clamp on current probes, but chances are you don’t know much about the Rogowski current probe. A Rogowski...
Picotest
Feb 5, 20141 min read
40 views
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