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Inductance and Capacitance

Inductance and Capacitance. INEL 4075 –Chapter 7 Dr. Sandra Cruz-Pol Professor Electrical & Computer Engineering UPRM. Capacitors. Capacitors store electrons in form of separated charge or E field. http://www.kpsec.freeuk.com/components/led.htm. Capacitance, in Farads [F].

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Inductance and Capacitance

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  1. Inductance and Capacitance INEL 4075 –Chapter 7 Dr. Sandra Cruz-Pol Professor Electrical & Computer Engineering UPRM

  2. Capacitors Capacitors store electrons in form of separated charge or E field. http://www.kpsec.freeuk.com/components/led.htm

  3. Capacitance, in Farads [F] • The capacitance is • The charge • The current in a capacitor • The voltage, cannot change instantaneously

  4. Capacitors • Energy stored in capacitor • Parallel and Series capacitors

  5. Electric Circuit

  6. Discharging a capacitor

  7. Charge/discharge Capacitor Piezo-electric material

  8. Chip – (integrated circuits) The 555 timer regulator pin layout (from http://www.doctronics.co.uk/555.htm)

  9. 1k

  10. What is a circuit Board? Nodes?

  11. Myth: Why is the Ocean Blue? FALSE: The ocean is blue because the sky reflection on its surface. TRUE:Water is blue. • frequency spectra • But you need a huge amount of it to really see its color. • Look at a swimming pool as it gets deeper; even on cloudy days. http://ece.uprm.edu/~pol/OceanBlue.html

  12. Myth #2 • FALSE: Thomas Edison, greatest contributor to Electricity and systems used today. • TRUE: Nikola Tesla – greatest contributor to Electricity. • Invented ac motor, • perfected dc motor, • invented radio transmission, (wireless) • designed Niagara Falls generator, • distribution systems, • fluorescence lamps, • remote control, wireless, • logic circuits, • 3 phasic and many others.

  13. Inductors • Store magnetic fields Symbol

  14. Inductors • Energy storage – inductors store energy in the form of a magnetic field • Series and parallel inductance • Initial conditions of switch circuits solenoid

  15. Inductance, in Henries [H] • The inductance is • The voltage in an inductor • The current, cannot change instantaneously

  16. Inductors • Energy stored in inductor • Series and Parallel inductors

  17. Electro-magnet ***Warning!! It can get HOT.

  18. Where to find this material? • http://ece.uprm.edu/~pol/cursos

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