Resonant Devices
Resonant circuits often consist of coils and capacitors in series or parallel, but there are other kinds of hardware that exhibit resonance. Some of these are as follows. Piezoelectric Crystals Pieces of quartz, when...
Category: Power and Resonance in Alternating-Current Circuits
Power and Resonance in Alternating-Current Circuits
Resonance
One of the most important phenomena in ac circuits, especially in RF engineering, is the property of resonance. This is a condition that occurs when capacitive and inductive reactance cancel each other out. Series...
Power Transmission
Consider how electricity gets to your home. Generators produce large voltages and currents at a power plant. The problem: getting the electricity from the plant to the homes, businesses, and other facilities that need...
True Power, VA Power, and Reactive Power
In an ac circuit or system containing nonzero resistance and nonzero reactance, the relationships among true power PT, apparent (VA) power PVA, and imaginary (reactive) power PX are as follows: PVA 2 = PT...
Forms of Power
What is power, exactly? Here is an all-encompassing definition: Power is the rate at which energy is expended, radiated, or dissipated. This definition can be applied to mechanical motion, chemical effects, dc and ac...