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titantitan
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I wiki'd it and I am still having some trouble understanding it. Is it basically like resistance for AC circuits? Then why is resistance still mentioned when talking about AC?
So then why is a transformers impedance information so important? does it affect its effeciency?
titantitan said:I wiki'd it and I am still having some trouble understanding it. Is it basically like resistance for AC circuits? Then why is resistance still mentioned when talking about AC?
Impedance is a measure of the opposition to the flow of an alternating current (AC) in a circuit. It is a combination of resistance, capacitance, and inductance and is measured in ohms.
Resistance is a measure of the opposition to the flow of direct current (DC) in a circuit, while impedance takes into account the additional factors of capacitance and inductance that affect the flow of AC. In other words, resistance only considers the physical properties of a conductor, while impedance takes into account both the physical and electrical properties of a circuit.
Impedance is caused by the combined effects of resistance, capacitance, and inductance in a circuit. These factors can be present in different amounts depending on the components used and the layout of the circuit.
Impedance is measured using an ohmmeter, which applies a small AC voltage to the circuit and measures the resulting current. The measured value is then converted to ohms, the unit of impedance.
Impedance is important in circuits because it affects the flow of AC current and can have a significant impact on the performance and stability of electronic devices. Understanding and managing impedance is crucial in designing and troubleshooting complex circuits.