Download Electronics Powerpoint

Introduction to Electronics
Photonics Leaders Summer
Session July 6 2006
Mr. Conover [Available Thursday 1pm-3pm]
[email protected]
AIM: golfpittblc
Cell: 919-740-5130
WRITE ALL ANSWERS ON SEPARATE PAPER!
What Is Electronics?
What Is Electronics?

A branch of physics that deals with the
emission, behavior, and effects of
electrons (as in electron tubes and
transistors) and with electronic devices
What Is Electronics?

A branch of physics that deals with the
emission, behavior, and effects of
electrons (as in electron tubes and
transistors) and with electronic devices

The science and technology of
electronic phenomena
How is Electronics related to Photonics?

Write your own definition of the
relationship:

List several devices that use both
electronics and photonics:
Using Circuits with Photonics
Circuitry Components

Provide a definition for a circuit:

List several components that are used
to build a circuit:
Circuitry Components

What happens when we flip on a light
switch? Use details such as wire,
current, light bulb, switch, voltage,
resistance:
Circuitry Components

What word do all of these have in common?
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
Circuitry Components

What word do all of these have in common?
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
Circuitry Components
RESISTORS: restrict the passage of
current through a circuit.
 Resistance is measured in OHMS.
 Commonly look like this:

QuickTime™ and a
TIFF (LZW) decompressor
are needed to see this picture.

What do the colored bands represent?
Circuitry Components

We use the colored bands to represent
the value of resistance:
QuickTi me™ and a
TIFF ( Uncompressed) decompr essor
are needed to see thi s picture.
Each color has a number associated
with it as shown in the table below.
There is an example on the next two slides.
QuickTime™ and a
TIFF (LZW) decompressor
are needed to see this picture.
Circuitry Components
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
Circuitry Components
QuickTime™ and a
TIFF (LZW) decompressor
are needed to see this picture.
Red = 2
Orange = 3
Green = 5
Gold = +/- 5%
So we have:
23.0 E 5 OHMS with a +/- 5%
TOLERANCE
23E5 OHMS is also equivalent
to saying 2300 kOHMS (kilo-ohms)
or 2.3 MOHMS (mega-ohms)
Circuitry Components
QuickTime™ and a
TIFF (LZW) decompressor
are needed to see this picture.
Your turn to figure out the value of resistance!
1st Color is _______ whose value =
2nd Color is _______ whose value =
3rd Color is _______ whose value =
This resistor = _______________ OHMS
Circuitry Components
QuickTime™ and a
TIFF (LZW) decompressor
are needed to see this picture.
Try one more!
Resistance = ___________________ OHMS
Circuitry Components

Light Emitting Diodes (LEDs)
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
Circuitry Components

List some places where you have seen
LEDs:

Describe to someone not in Photonics
what a LED is:
Circuitry Components

Use the internet or some other
resource to answer these questions:
 What
is meant by the “turn-on voltage” of
an LED?
 What
 List
colors of LEDs can you buy?
3 ways that LEDs and LASERs are
different.
Building a Circuit
Use the following components to light up an LED.
Draw the diagram and SHOW THE FLOW OF CURRENT.
(You may not have to use everything!)
Intro to Photonics and Circuits
I’ll see you all after the break when we will build our own
circuits including Electric Dice and a Line Tracking Mouse!
Enjoy the rest of your holiday!