Transcript Slide 1

Common Lamps
Commercially Available Lamps and
Their Features
Benjamin W. Kidd - ENGR-162/12
Lamp Features and Specifications
Lamp Life – Average lifetime (usually in
hours) of the lamp
 Wattage – Electrical Power that the
Lamp consumes (Unit: Watts - duh!)
 Voltage – Rated Voltage to be used at.
Usually incandescent/halogen lamps can
run on either AC or DC. Do NOT Exceed
the rated voltage.

Benjamin W. Kidd - ENGR-162/12
Lamp Features and Specifications

Beam Spread – The angle of coverage
that most of the light is focused in.
Benjamin W. Kidd - ENGR-162/12
Base Types

Different Lamps use different types of
bases. It is important to know which one
you want.
The “Medium” base is the most common, used in most residential
Incandescent fixtures.
Benjamin W. Kidd - ENGR-162/12
Types of Lamps:

Type A – “Standard” type of lamp, used
in most desk lamps, general purpose
residential lighting.
Type “A” Lamp (120V)
Courtesy of www.mcmaster.com
Benjamin W. Kidd - ENGR-162/12
Types of Lamps:

PAR Type – Parabolic Aluminized
Reflector, Reflecting/optical mechanisms
are contained within the lamp. Often
used for outdoor security lights.
PAR 38 (120V) Lamp
Courtesy of www.mcmaster.com
PAR 36 (12V) Lamp
Courtesy of www.mcmaster.com
Benjamin W. Kidd - ENGR-162/12
Types of Lamps:

R Type – “Reflector” lamp, typically used
in Track lighting. More directional than
“A” lamp but not as directional as PAR
lamp.
R40 (120V) Lamp
Courtesy of www.mcmaster.com
R20 (120V) Lamp
Courtesy of www.mcmaster.com
Benjamin W. Kidd - ENGR-162/12
Types of Lamps:

MR 16 – A “contemporary” lamp used in
decorative track lighting. Note this is a 12V
lamp and CANNOT be used on 120V Systems
directly. These are usually available in very
directional models.
MR16 (12V) Lamp
Courtesy of www.mcmaster.com
Benjamin W. Kidd - ENGR-162/12
Dining Room Dimmers
How to Build a Portable
Incandescent Lamp Dimmer
Benjamin W. Kidd - ENGR-162/12
Building a Portable Dimmer Pack

Materials
Pictures from www.lowes.com and www.allelectronics.com
Benjamin W. Kidd - ENGR-162/12
Cost Estimate
Portable Incandescent Lamp Dimmer
Parts List/Cost Estimate
Vendor
Part No.
Description
Price Ea.
Lowe's
70784
600-Watt White Slide Dimmer
$
7.83
1
$
7.83
Lowe's
70669
Switch/Receptacle Wallplate
$
0.59
1
$
0.59
Lowe's
10005
PVC Two Gang Box
$
1.61
1
$
1.61
Lowe's
70684
Residential Duplex Receptacle
$
0.46
1
$
0.46
All Electronics
FHP-2
In-line AGC (3AG) Fuse Holder
$
0.50
1
$
0.50
All Electronics
FS-5
5A 3AG Fuse (5 Pack)
$
0.75
1
$
0.75
--
3 Wire Appliance Cord
$
-
1
$
-
Personal
Subtotal
Overcharge
Qty
Subtotal
$ 11.74
(For tax, unexpected costs, etc.)
Total Estimate
30%
$
3.52
$ 15.26
Benjamin W. Kidd - ENGR-162/12
Schematic Diagram
Benjamin W. Kidd - ENGR-162/12
Fusing the Dimmer
It is important to fuse the dimmer to
protect against overloads and short
circuits.
 To properly size the fuse, you need to
know the power rating of the dimmer.
Then use P = V x I to calculate the fuse
amperage.
600W/120V = 5A

Benjamin W. Kidd - ENGR-162/12
Wiring Diagram
Benjamin W. Kidd - ENGR-162/12
Final Product
Benjamin W. Kidd - ENGR-162/12
Korean 101 - 한국말 101
Let’s Learn to say Hello (formal tone)
An-nyung-ha-se-yo
안녕하세요
Benjamin W. Kidd - ENGR-162/12