Testing of a printed circuit board (PCB) impedance measurement region is performed using time domain reflectometry (TDR) that measures reflections and time delays of pulses injected into an impedance measurement region (impedance coupon). Timing markers are used to give both visual and electrical indi...
Control circuit has impedance high to a circuit for adjusting the power expended in a set of lamps has discharge
Of course, we have fed the engine with the appropriate impedance equations to give the correct results, but we have also "taught" the calculator what variables you need for each cable type. I might add that if you're looking to calculate the electrical impedance of a circuit, they have a...
In electrical and electronic circuit design, the main goal of a designer is to achieve maximum power that can deliver from the source to load. In almost all applications, impedance matching is necessary. We have discussed a few applications of impedance matching. Impedance Matching Transformer The...
Environmental conditions change the impedance of the antenna, which reduces output power, efficiency and linearity. A circuit is provided which is designed to detect the impedance of the antenna. With the measured impedance, impedance matching can be accomplished. The circuit for detecting the ...
In this paper, we present a more exact expression for the output impedance of a BJT Wilson current source, which gives a much better accuracy (with typical error ja:math , which may give an error of as much as 63%. Also, the expression developed in this work underestimates the actual ou...
An Implementation of Electrothermal Component Models in a General Purpose Circuit Simulation Program We present an implementation of electrothermal component models in the circuit simulation program APLAC. These models share a common electrother- mal inter... T Veijola,M Valtonen 被引量: 22发表: 1997...
This is the impedance matching calculator - a great tool that helps you solve problems with matching electronic elements within a circuit. In the article, you can find a short explanation of the concept of impedance matching and learn three basic impedance matching topologies (L-match, Pi-match...
The conduction mechanism for pure orthochromite and orthocobaltite was defined and two types of conduction were observed in the investigated temperature range for the complex perovskites. In order to explain the results, an equivalent circuit with fitted values of circuit components was proposed. 展开...
3) winding short-circuit 绕组短路 1. The model was used to simulate stator winding short-circuit. 运用该模型对定子绕组短路故障进行了仿真研究,通过对定子起动电流的频谱分析发现,定子绕组短路时,三次、五次、七次谐波增加较多。 更多例句>>