Impedance is an important parameter used to evaluate components/circuits/materials. An impedance vector includes real part - resistance R and imaginary part - reactance X, which is the resistance of a component or circuit to the AC current of a given frequency flowing through it.
The automatic balancing bridge method can be used to measure the impedance. Since the measurement of impedance will be affected by the frequency, the level of measuring signals, or the incorrect calibration procedure, the value measured would be affected as well. MICROTEST would like to share some basic electronic measurement techniques with the students.
Impedance is an important parameter used to evaluate components/circuits/materials. An impedance vector includes real part - resistance R and imaginary part - reactance X, which is the resistance of a component or circuit to the AC current of a given frequency flowing through it.
The automatic balancing bridge method can be used to measure the impedance. Since the measurement of impedance will be affected by the frequency, the level of measuring signals, or the incorrect calibration procedure, the value measured would be affected as well. MICROTEST would like to share some basic electronic measurement techniques with the students.
The health status of a human body can often be deduced through the measurement of human body impedance. From the electricity point of view, the electrolyte solution inside and outside the cell is acting as a conductor. At the same time, bones and fat are poor conductors, reflecting the different conductive characteristics of different tissues in the human body.
Bioimpedance is a complex number composed of an imaginary number (reactance value Xc) and a real number (resistance value R). Briefly speaking, the reactance value is mainly caused by the capacitance produced by the cell membrane, and the resistance value is caused by the total water content of the human body.
It is possible to measure the bioimpedance by using the 6632 Impedance Analyzer with the 2-electrodes method. The frequency scanning feature provided by the 6632 can be used to draw the Bode Plot to analyze the changes in the relationship between the impedance value (Z) and the capacitance value (C).
Organic light-emitting diodes (OLED) are currently one of the preferred technologies for displays in consumer electronics. The application of OLEDs in the general lighting market is limited due to the high manufacturing costs. In contrast, the light-emitting electrochemical cells (LEC) can use the stable electrodes in the air together with their single-layer component structure, leading to a lower manufacturing cost.
Using the combined movement of ions and electrons, it can be charged like a capacitor, and it can exhibit luminescence performance similar to a light-emitting diode. The key parameter affecting such interactions among the charges is the dielectric constant ε, and the low dielectric constant facilitates a maximized light output. MICROTEST shares a series of measurement solutions for electrochemical applications.
Organic light-emitting diodes (OLED) are currently one of the preferred technologies for displays in consumer electronics. The application of OLEDs in the general lighting market is limited due to the high manufacturing costs. In contrast, the light-emitting electrochemical cells (LEC) can use the stable electrodes in the air together with their single-layer component structure, leading to a lower manufacturing cost.
Using the combined movement of ions and electrons, it can be charged like a capacitor, and it can exhibit luminescence performance similar to a light-emitting diode. The key parameter affecting such interactions among the charges is the dielectric constant ε, and the low dielectric constant facilitates a maximized light output. MICROTEST shares a series of measurement solutions for electrochemical applications.