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Sorry to interrupt, but I'm in EE too, this topic is getting me excited !!!
more stuff about capacitor.
The most important role of capacitor in low voltage analog circuits is that it can be used to make high pass and low pass filter and oscillator.
It has an impedance of 1/jwC
(C is the capacitance, w is the freqency in rad/sec, j is the imaginary number)
Knowing the impedance, you can incorporate to any circuits and perform phasor analysis.
About electromagnetism, the component that's related to it is an inductor. It has an impedance of jwL
(w is the frequency in rad/sec, L is the inductance, j is the imaginary number)
Similar to a capacitance, you can also use it in a phasor analysis.
Similarities between inductor and capacitor.
1. They both have complex impedance (strictly speaking, resistance of a resistor is a real impedance)
2. They are both used in analog electronics.
3. They both can be used in signal processing and amplifiers (like LNA and power amplifier)
Differences
1. Capacitor impedance is lagging by 90 degree
2. Inductor impedance is leading by 90 degree
Capacitor and Inductor together?
if you put them together in parallel, they'll become a resonator pool.
The complex part of their impedance will cancel out and they'll have a REAL impedance (resistance). At resonance frequency, their resistance (idealistically) is infinite.
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