Actually, any conductor has inductance, whether it is an ionized channel blasted across the sky by a lightning bolt or a nerve cell axon within your brain. However, usually we are talking about a segment of copper wire. Winding it to form a coil multiplies the inductance, and if these windings encircle a core made of a magnetically permeable material such as soft iron, the effect is increased dramatically. All materials are to some extent permeable to magnetic flux, and a vacuum is as well. (Permeability in a magnetic circuit is like conductivity, the reciprocal of resistance, in an electrical circuit. Magnetic flux is like electrical current.)
Any coil or conductor has inductance, and this is a fixed value, whether the coil is on the warehouse shelf or connected to a live circuit. There are some complex formulas used for calculating this value. It is not necessary to perform these calculations because we are not in the business of designing and building inductors, or designing and building long electrical or telecom distribution lines. The inductance will be marked on the device by the manufacturer, and we may take this as a given when ordering replacement parts. Remember that inductance is a property of the device and remains unchanged under normal conditions, that is, regardless of frequency, voltage, current, or any other circuit parameters.
In contrast, inductive reactance is a property of the device that is dependent upon both the inherent inductance of the coil or conductor, and how it is deployed in the circuit—specifically the frequency of the current passing through the conductor. Inductive reactance, like the capacitive reactance that we discussed earlier, is a measure of opposition to the flow of current. It is likewise measured in ohms, and conforms to Ohm’s law. The way inductive reactance differs from resistance is that it is frequency dependent.
Inductance may be said to be a mirror image of capacitance, and like any reflected image, certain elements of the reflection are reversed. Specifically, in a capacitor or capacitive load, the capacitive reactance is greater at lower frequencies (maximum at dc, 0 Hz) and less at higher frequencies, whereas in a coil or inductive load, the inductive reactance is just the opposite. It is greatest at high frequencies and less at low frequencies. At dc, or 0 Hz, there is no inductive reactance except at the instant when power is applied and when it is disconnected, at which times the current behaves like a high frequency, with fast rise time and fall time of the waveform.
How EG Appliance Repair Inc Professionals In Los Angeles Can Help You Today!
Los Angeles appliance repair supports various neighborhoods in the Los Angeles with proper and reliable service. As soon as all repair work is complete, residents return to their daily errands and routine and continue their lives without inconveniences caused by faulty appliances. The company provides repair service for various appliance brands, models and types, including Viking, Jenn Air, KitchenAid, Maytag, Whirlpool and many others. Don’t hesitate inquire about your appliance model type and brand to see yourself what can be done to improve the situation.