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Engineering. Interactive. Workshop. Eng. Mageda Al- Moubarak Eng. Fadia El- ssa. Contents. Electric Elements Instruments. Active Elements. Active elements are capable of providing an average power greater than zero to external devices , over an infinite period of time. Examples.

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Presentation Transcript
slide1

Engineering

Interactive

Workshop

Eng. Mageda Al-Moubarak

Eng. Fadia El-ssa

contents
Contents
  • Electric Elements
  • Instruments
active elements
Active Elements
  • Active elements are capable of providing an average power greater than zero to external devices, over an infinite period of time.
  • Examples

Current source: produces a current in a conductor

Voltage source: produces a potential difference between two points.

passive elements
Passive Elements
  • Passive element is an element of the electrical circuit that Does Not create Power.

Resistors, Capacitors, Inductors and diodes are examples of passive elements.

voltage and current
Voltage and Current
  • Voltage: A measure of the work to move a charge.

Voltage= Energy/ Charge.

  • Current: Charge in motion

Current= Charge/ Time.

  • Power = V*I= Energy * Charge = Energy

Charge Time Time

resistor
Resistor
  • When a voltage V is applied across the terminals of a resistor, a current I will flow through the resistor.
  • The current is directly proportional to the voltage using ohm’s law I=1*V
  • R
  • Where the slope of the line = 1/R
slide8

Series

Parallel

capacitor
Capacitor
  • Capacitance C, measured in Farads - is an electronic component consisting of a pair of conductors separated by adielectric(insulator).
  • When there is a voltage across the conductors, a static electric field develops, that stores finite amount of energy.
  • Impedance Zc= 1/jωc, Where ω = 2πf.
slide16

Series

Parallel

inductor
Inductor
  • Inductance L, measured in Henries –Typically an inductor is a conducting wire shaped as a coil.
  • electric current passing through the inductor creates a magnetic field and thus stores energy.
  • Impedance ZL= jωL , where ω = 2πf.
slide19

Series

Parallel

diode
Diode
  • A diode is a two-terminal electronic component that conducts electric current in only one direction.
  • The most common function of a diode is to allow an electric current to pass in one direction while blocking current in the opposite direction.
slide36

1. Give 3 ways in which you can have an Equivalent Resistance of 60 KΩ. Given the following resistances,

Two 1.2 * 105Ω

20 K Ω

12 K Ω

50 K Ω potentiometer.

47 K Ω

1 K Ω

  • Two 1.2 * 105Ω in parallel
  • 20 K Ω and 40 from the 50 K Ω potentiometer in series.
  • 12 K Ω, 47 K Ω, and 1 K Ω in Series.
slide39

5. How can you discharge a capacitor?

Connecting it with a resistor

slide41

LED stands for

……………………

Light Emitting Diode

slide42

B. Digital Multi-meter is used to measure ……………………………, …………………………, and ………………………

Resistance

Voltage

Current

slide43

C. DC offset Knob is found in an instrument which is …………………………

Function Generator

slide44

E. To generate a Square Wave. We Should use a(n)

……………………………….

Function Generator

slide45

Given a 10K Potentiometer, and a fixed power supply of 5 V. Draw a circuit to show how you can get 3 V output.

5* R2 = 3V

10K

R2= 6KΩ

R1=10K-6K=4K Ω