Interactive

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# Interactive - PowerPoint PPT Presentation

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

Engineering

Interactive

Workshop

Eng. Mageda Al-Moubarak

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

Current source: produces a current in a conductor

Voltage source: produces a potential difference between two points.

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: 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
• 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

Series

Parallel

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.

Series

Parallel

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.

Series

Parallel

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.

TRUE

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.

82000Ω with ±5%

5. How can you discharge a capacitor?

Connecting it with a resistor

LED stands for

……………………

Light Emitting Diode

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

Resistance

Voltage

Current

Function Generator

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

……………………………….

Function Generator

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