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INEL 4075

INEL 4075. Electrical Circuits Dr. Sandra Cruz-Pol Professor Electrical & Computer Engineering UPRM. Basic Concepts. Current Voltage Power. Flujo de cargas. Energía necesaria para que fluya. Razón de tiempo a la que se consume o provee energía. Example.

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INEL 4075

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  1. INEL 4075 Electrical Circuits Dr. Sandra Cruz-Pol Professor Electrical & Computer Engineering UPRM

  2. Basic Concepts • Current • Voltage • Power Flujo de cargas Energía necesaria para que fluya Razón de tiempo a la que se consume o provee energía

  3. Example The battery of a flashlight develops 3V, and the current through the bulb is 200mA. What power is absorbed by the bulb? Find the energy absorbed by the bulb in a 5-minunte period. Answers: p= 0.6W, w= 180J

  4. Electrical Circuits • We will take a look at several electricity components & concepts: • Resistors • Series & Parallel Connections • Independent (e.g. Batteries) and Dependent Sources • Capacitors, Inductors • LED • Nodes • Chips (IC) It most have a closed loop

  5. Meet the Concepts: Resistor Resistors- reduce or resist the flow of electrons

  6. v= Ri p= + v - i

  7. Series Connection Ley de Ohm V= I R

  8. Parallel Connection Elements connect on both legs. I = V / R

  9. Fuentes independientes • Es un generador de corriente o voltaje cuyo valor no depende de los componentes u otras variables en el circuito. + - v2= 3 (V)

  10. Fuentes Dependientes • Modelan comportamiento que depende de otro voltaje o corriente. • Se usan para modelar transistores y amplificadores. + - v = 5i

  11. Metros • Voltímetro – se conecta en paralelo • Amperímetro- se conecta en serie

  12. Otros elementos • Transducers - Convierten cantidades físicas en cantidades eléctricas • Interruptores (switches) – conectan o abren el circuito

  13. What is a Node? How many nodes are in this circuit?

  14. LED • Light emitting diodes (LED) like regular light bulbs but that are actually semiconductors that shine when an electrical current passes through them in a specific direction. • Low Power consumption!  + http://www.kpsec.freeuk.com/components/led.htm

  15. What is a circuit Board? Nodes?

  16. Electronic Doorbell Switch Speaker

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

  18. Where to find this material? • http://ece.uprm.edu/~pol Also look at: • http://casa.ece.uprm.edu • http://ece.uprm.edu/climmate

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