Posts in Category MFIA

Thickness-dependent dielectric measurements with the MFIA

on 30.09.2020 at 08:52 by Meng on Blog of Meng Li
Introduction A dielectric is traditionally defined as an electrical insulator, with very poor conductivity at DC [1]. However, because of its polarizability, charges can be stored in a dielectric material, typically in the format of dipoles, in the low and […]

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 […]

Multiplexed Impedance Measurements with the MFIA

on 17.06.2020 at 13:43 by Meng on Blog of Meng Li
Introduction Having more impedance measurement channels is often desirable in many applications. For instance, in electrical impedance tomography (EIT), it is common to have many channels to achieve enough spatial resolution (144 electrodes on the thorax) [1]. Naturally, this can […]

Humidity Sensors: Resistive or Capacitive? The MFIA can tell the Answer.

on 15.06.2020 at 15:31 by Meng on Blog of Meng Li
Introduction Humidity sensors (also known as hygrometers) are commonly used in applications ranging from everyday sensing to lab research [1]. They are typically placed in an enclosed chamber, such as a car or a glovebox, where they are used to […]

Sensor Characterization and Control

on 25.05.2020 at 08:00 by kivanc on Blog of Kivanç Esat
Sensors come with different flavors. They can be inertial devices for motion detection; can be based on photosensitive materials; can be absorbing surrounding molecules to detect their concentration, and so on. Developments in micromachining and micro/nanoelectromechanical system (MEMS/NEMS) technologies lead to miniaturization and low power consumption. Hence, multiple sensors […]

5个优化您的阻抗测量的小技巧

on 11.05.2020 at 09:25 by Meng on Blog of Meng Li
阻抗测量可能有诸多不同的要求,但是最终共同的目标都一致,即获得最高的准度,精度和可重复性。本篇博文将指导您如何通过最佳的设置来提升您的阻抗测量结果。5个小技巧包括:1.确保仪器和待测器件之间的接线最佳; 2.使用用户补偿功能提升测量准度;3.选择正确的检测端子配置; 4.尽可能的使用自动输入量程模式; 5.优化平衡测量的速度和精度。

5-tips to Improve Your Impedance Measurement

on 02.04.2020 at 07:45 by Meng on Blog of Meng Li
Introduction Impedance applications often have different requirements, but the common goals are similar; get the best possible accuracy, precision, and repeatability. This blog post will guide you to the best measurement settings to improve your impedance measurements. It will help […]

DC I-V Sweeps on the MFIA

on 10.01.2020 at 09:07 by Tim Ashworth on Blog of Tim Ashworth
Characterizing the impedance of components and materials with the MFIA is done by necessity with an AC signal. However, the MFIA and MFLI can also take DC measurements. This blog post shows how easy it is to take DC measurements, […]

Bioimpedance of a Muscle Contraction with the MFIA

on 22.11.2019 at 09:20 by Tim Ashworth on Blog of Tim Ashworth
Impedance measurements of biological tissue are commonly used in bio-engineering and life sciences to assess the condition and composition of tissue in a non-invasive, reproducible way.  In addition, bio-impedance measurements, also known as bioelectrical impedance analysis (BIA) or electrical impedance […]

Synchronization of Multiple MFLI Lock-in Amplifiers by MDS

on 16.09.2019 at 00:00 by Mehdi on Blog of Mehdi Alem
Introduction  Multi-channel signal generation and detection are indispensable in many applications such as multi-qubit quantum computing and multi-sensor systems. Synchronization of signal channels comes to the equation when the temporal sequence of events is of interest, especially for fast physical […]

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 […]

Automated 2D Impedance Sweep on the MFIA

on 28.08.2019 at 15:43 by Meng on Blog of Meng Li
Many devices and materials exhibit an impedance which depends on both frequency and other parameters such as bias voltage. To fully characterize the impedance of these samples requires an impedance analyzer with the ability to sweep in two dimensions. The MFIA (and MFLI with MF-IA option) can be easily controlled via any of the five included APIs to open up the full parameter space of impedance analysis.This blog details a short script for Python 3.7 which demonstrates the ease in which multi-dimension impedance sweeps can be carried out.

Measuring low ESL and low ESR of a DC-Link Capacitor with the MFIA Impedance Analyzer

on 10.06.2019 at 09:25 by Tim Ashworth on Blog of Tim Ashworth
Introduction: This blog post describes how the MFIA (and MFLI with MF-IA option), can characterize the equivalent series inductance (ESL) and equivalent series resistance (ESR) of a DC-Link capacitor typically used in power inverters for electric vehicles. The ESR and […]

Frequency-Domain Response of Lock-in Filters

on 19.03.2019 at 18:10 by Mehdi on Blog of Mehdi Alem
Introduction  The response of a lock-in amplifier is characterized by the parameters of its low-pass filter (LPF), i.e. time constant and filter order. The temporal response of the LPF demonstrates the latency of measurement while its spectral response shows the […]

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 […]

Categories