Using an impedance analyzer is a great way to identify problems and diagnose problems in electronic systems. The analyzer is an electronic test equipment which measures complex electrical impedance as a function of test frequency.
Bioelectrical impedance analysis
BIA is a non-invasive technique that measures electrical characteristics of the body. Bioelectrical impedance analysis is used to measure body water and to estimate body fat. It is a relatively inexpensive and accurate technique. It has become a widely used method for body composition measurement. However, it is not yet fully validated for use in critically ill patients.
Bioelectrical impedance analysis is a non-invasive technique that uses weak electric current to measure the electrical resistance of the human body. The technique was developed in the 1970s and is considered a measure of body water content. The method was also popular with researchers because it was noninvasive and inexpensive. However, there are still several discrepancies in bioelectrical impedance measurements. These uncertainties could have significant clinical and therapeutic consequences.
InBody makes innovative technology that uses a direct segmental measurement method to measure bioelectrical impedance. This method identifies each body cylinder independently and accounts for contact resistance. This technique is not affected by age or ethnicity.
Measurement of opposition to current in AC systems
During the design and analysis of ac circuits, one of the most important concepts to understand is the measurement of the opposition to current in ac systems. There are many different concepts that can be used to measure the opposition to current in ac systems, such as resistance, reactance, and impedance. In the end, it is the combination of these elements that makes the ac system function.
The most obvious measure of opposition to current in ac systems is the angular velocity of an ac circuit. This is a number that is mathematically calculated by multiplying the frequency of the alternating current by a factor of two. In addition, the angular velocity is also a measure of the magnitude of the alternating current.
The other significant measure of opposition to current in ac circuits is the inductive reactance. This is a property of the inductor and is not only an opposition to current, but it is also a measure of the combined effect of the inductor and the voltage source.
Identify and diagnose problems in electronic systems
Using an impedance analyzer to identify and diagnose problems in electronic systems can be a very effective tool. Although a multimeter is generally the most common tool, other tools may be required depending on the complexity of the PCB.
For instance, a thermal camera may be used to identify hot spots on the PCB. This may indicate a solder joint overheating or a power-to-ground short.
Additionally, an impedance analyzer may be used to locate a short circuit. A short circuit would display as a vertical line on the display. If this is the case, you would need to remove the coating at the critical test points. A new technique is being developed to penetrate PCB coating.
Measuring the impedance of lead conductors is one way to find out if there is a short circuit. If a conductor fracture is present, an additional impedance will be introduced in series with the circuit.
When an electronic circuit fails, the result can be catastrophic. Identifying the root cause of the failure is the most difficult part of troubleshooting. But, by methodically using relevant test tools, you can identify the root cause of the failure and begin the repair process as quickly as possible.
