Posts tagged impedance

Webinar Summary with Q&A: Fast Electrical Impedance Spectroscopy for Characterization and Counting

on 23.03.2021 at 09:57 by Meng on Blog of Meng Li
This blog summarizes the webinar that Fluigent and Zurich Instruments presented together our solution for fast electric impedance spectroscopy (EIS) in microfluidics. The system consisted of an HF2LI lock-in amplifier from Zurich Instruments and the LineUp series microfluidic flow controllers […]

Sensing finger movements via impedance measurements

on 19.01.2021 at 12:22 by magda on Blog of Magdalena Marszalek
Smart clothes, wearables and biosensors do not sound as futuristic as they used to. The development in this field of science and engineering is rapid and it is no longer a niche – as seen in the first or even […]

Proximity sensors: inductive or capacitive? Using the MFIA to measure the sensitivity and response time of both sensing regimes

on 07.01.2021 at 17:36 by Meng on Blog of Meng Li
Introduction A proximity sensor is a sensor that detects nearby objects without physical contact [1]. They are commonly used, in applications ranging from production lines to modern mobile devices, mainly thanks to their non-contact configuration and the accompanying long lifetime. […]

Webinar Q&A- Impedance Analysis; Measuring Fast and Low

on 23.06.2020 at 08:01 by Tim Ashworth on Blog of Tim Ashworth
This blog post answers the many welcome questions from the audience during the recent webinar “Impedance Analysis; Measuring Fast and Low”. This webinar covered two distinct and equally important impedance measurement challenges. The first involves measuring the low equivalent series […]

What is the Basic Accuracy of an Impedance Analyzer?

on 29.08.2019 at 11:09 by Tim Ashworth on Blog of Tim Ashworth
This blog explains the meaning of basic accuracy when referring to impedance analyzers. The accuracy of an impedance analyzer is a critical parameter that allows the user to know how close the measured impedance will be to the true impedance […]

Gated data transfer for increased data sampling rate on the MFIA and MFLI

on 19.12.2018 at 14:42 by Tim Ashworth on Blog of Tim Ashworth
Introduction For measurements of signals which are rapidly changing, for example, when measuring capacitance transients in Deep Level Transient Spectroscopy (DLTS), high temporal resolution is required. In its standard operating configuration, the MFIA (or MFLI with MF-IA option) can sample […]

Square pulses for DLTS measurements on the MFIA

on 22.08.2018 at 16:00 by Tim Ashworth on Blog of Tim Ashworth
Producing square voltage pulses and capturing capacitance transients This blog post shows how to produce square voltage pulses and capture the resulting capacitance transients on a short timescale (20 us) for example, for Deep-level Transient Spectroscopy (DLTS) measurements. Using the LabOne Threshold Unit […]

Rapid and Accurate C-V Measurements on the MFIA

on 19.08.2018 at 15:50 by Tim Ashworth on Blog of Tim Ashworth
Fast C-V measurements up to 3000 V/s This blog post demonstrates the ability of the MFIA (also MFLI with MF-IA option) to measure capacitance on a short timescale (20 us) as a function of DC bias voltage, for example, for […]

Displaying Nyquist Plots on the MFIA Impedance Analyzer

on 27.09.2017 at 13:45 by Tim Ashworth on Blog of Tim Ashworth
A short guide to displaying impedance data as Nyquist plots on the LabOne Sweeper of the MFIA. Nyquist plots are a key tool when displaying complex impedance data. They display the real part of the signal on the X-axis against […]

Kramers–Kronig Test Applied to Impedance Measurements of Electrical Circuits

on 25.09.2017 at 06:57 by Mehdi on Blog of Mehdi Alem
Introduction  In this post, the Kramers-Kronig relations are used to verify the results of an impedance measurement experiment performed by the Zurich Instruments MFIA Impedance Analyzer or MFLI Lock-in Amplifier equipped with the MF-IA option. The Kramers-Kronig relations state that the real […]

LCR Meter vs Impedance Analyzer

on 11.08.2017 at 14:52 by Tim Ashworth on Blog of Tim Ashworth
We are often asked about the difference between LCR Meters and Impedance Analyzers, especially since the MFIA offers the functionality of both instruments. LCR-meters and impedance analyzers are fundamentally similar, in that they both measure impedance parameters such as capacitance, […]

Teraohm Impedance measurements with the MFIA Impedance Analyzer

on 29.05.2017 at 11:45 by Tim Ashworth on Blog of Tim Ashworth
Introduction This blog post describes impedance measurements of a 1 TΩ commercially-available resistor using the MFIA impedance Analyzer. This further demonstrates the performance of the MFIA to accurately measure challenging components with very high impedance.  Thanks to a clear reactance […]

Characterizing High-Q 100 pF Capacitors with the Zurich Instruments MFIA

on 30.01.2017 at 09:30 by Tim Ashworth on Blog of Tim Ashworth
Introduction In the last impedance blog post we discussed how the MFIA could be used to investigate 3000 F capacitors, here we turn to the other end of the spectrum to investigate 100 pF capacitors. Specifically, this blog post looks at […]

The Nyquist Diagram for Electrical Circuits

on 11.01.2017 at 07:10 by Mehdi on Blog of Mehdi Alem
Introduction The Nyquist diagram of a transfer function is a parametric plot of its imaginary part versus real part as the frequency sweeps in a certain range [1]. When dealing with electric circuits, the transfer function is the immittance [2] of the […]

Using the MFIA Impedance Analyzer to characterize the ESR of a Super-capacitor

on 01.11.2016 at 10:14 by Tim Ashworth on Blog of Tim Ashworth
Introduction Super-capacitors are very useful devices providing power for applications ranging from SRAM to high-speed trains. The energy density is 10 – 100 times higher than that of standard (electrolytic) capacitors. And although they have a lower energy density than […]