you for the future.
The kit includes all parts and instructions to
give you experience on working with surface mount
components.
The finished project is a decision maker with
6 flashing LEDs to help you make vital decisions.
Requires a 9V battery.
282461
Kit
......................$21.95
or
$19.95
ea./3+
Electronic Components I.D. Course
Over 50 PARTS Included with the Course! 28
page manual with dozens of illustrations includes
detailed descriptions of all parts, their functions
in a circuit, color codes, and five self tests.
282432 ............................$9.95
or
$9.45
ea./3+
Resistors
Capacitors
Coils
Semiconductors
Others
Transformers
Practical Soldering Project I Kit
Working with printed circuit boards is in the future
of every electronic technician. Almost every
electronic device today has a printed circuit board
and whether you are assembling a PC board or
repairing it, you must understand the basics of
working with these boards.
Good soldering requires practice and an
understanding of soldering principles. This solder
practice project will help you achieve good soldering
techniques, help you become familiar with a variety
of electronic components, and provide you with
dynamic results. Kit comes with a soldering iron
and side cutters. Requires a 9V battery.
Practical Soldering Project I Kit
282459
Kit
....................$13.95
or
$12.95
ea./10+
Practical Soldering Project II Kit
282460
Kit
..........................$9.95
or
$8.95
ea./3+
Telephone Kit with Training Course
Build a pushbutton telephone equipped with the
following features: Pulse/tone dialing, automatic
redial, a ringer turn off switch, [4] neon bulbs for
visual ringing indicator, and a clear see-through
case to show the total inner workings of the phone.
Clear see-through case and wall mounting cradle
included.
280111
No Soldering Kit
..$21.95
or
$19.95
ea./3+
282428
Soldering Kit
........$23.95
or
$22.95
ea./3+
Remote Control Car Kit
Build a R/C car from the
ground up! Use
this system
to learn
about gears,
motors and
more. "No
soldering" version
includes preassembled circuit board. "Soldering
required" version needs assembly and soldering
of printed circuit board (kit includes detailed
assembly instructions).
Features include: Remote Control with seven
Functions, Flashing Top Light, Single Channel, and
detailed Assembly Manual. Ages 10 and up.
280511
No Soldering Kit ....
$29.95
or
$27.95
ea./3+
280512
Soldering Kit
........$29.95
or
$27.95
ea./3+
AM Radio Kits
An Easy-to-Build complete radio on a single printed
circuit board. Unique design allows you to place parts
over its corresponding symbol on the PC board. Teaches
the basic theory of AM radio operation. Detailed
instructions and illustrations make it an easy and
educationally sound project. Kits require Soldering and
a 9V DC Battery.
280642
2 IC AM Radio
Kit
........
$13.95
or
$12.95
ea./6+
840262
AM Radio Kit
................$19.95
or
$18.95
ea./6+
AM/FM Radio Kit
Before You Learn Electronics,
Learn About Electronic Parts
AM Radio Kits with Training Course
Learn & Have Fun! A Selection of Kits & Courses for Your Students
AM/FM Radio Kit with Training Course
This radio kit now includes Integrated Circuit
technology. Superheterodyne designed to receive
standard AM (amplitude modulation) and FM
(frequency modulation) broadcast frequencies.
Includes radio mounting stand. The PC Board
measures 5-1/4 H x 11-5/8 W. Kit Requires
Soldering and a 9V DC Battery.
840479
Kit
......................$29.95
or
$28.95
ea./6+ KELVIN
®
ECONOMY KITS
E L E C T R O N I C S
Copyright © Kelvin L.P.
264
www.kelvin.com
KELVIN
®
280 ADAMS BLVD. FARMINGDALE, NY 11735 USA
Light Activated Circuit This kit uses a light to activate a
relay that will trigger your alarm
or your robotic system to operate. It
has a built-in photocell, plus a relay
and a potentiometer for sensitivity
adjustment.
841129
Kit
....$5.95
or
$4.95
ea./10+
Blinking LEDs When you want the attention, put this
kit on your shirtbut first, you have
to assemble and test it! This kit
demonstrates how to blink two LEDs
with common electronic components
such as capacitors and resistors.
841123
Kit
....$2.95
or
$1.95
ea./10+
Touch Control Circuit
Ideal for use with your alarm or
automation projects.This kit will
demonstrate how to activate a relay
just by touching the ON probe. By
touching the OFF probe, the relay is
deactivated.
841130
Kit
....$4.95
or
$3.95
ea./10+
Bicycle Safety Light
Build this kit and connect it to your
bicycle or place it on your table top
or on the wall for a conversation
piece. Use with #430201 enclosure
on page 306.
841596
Kit
..$9.95
or
$8.95
ea./10+
Hollywood
Marquee Kit
Includes a PC board, components
and instructions. Use with enclosure
#430202 on page 306.
840556
Kit
..$12.95
or
$9.95
ea./10+
Strobe
Light This popular kit flashes at a
rate you control; from 120
to 300 times per minute. AC
operated. Kit includes a pre-
drilled PC board, components
and instructions.
840662
Kit
......$13.95
or
$11.95
ea./10+ Requires a 9V DC
Battery (#220019). Requires [2] 'AA'
Batteries (#220016). Does not include
enclosure shown.
Micro-Mazer
The layout of components gives this
kit a robotic face. Blinking LED eyes
give it a personality. The kit has [2]
blinking LEDs for eyes, and a jumbo
LED for a nose.
841124
Kit
....$6.45
or
$5.45
ea./10+
Speed Control
Use Pulse-Width Modulation (PWM)
to vary the speed of a DC motor from
0 to 100%. Can be used for any DC
motors from 3 to 25 Volt with 3 Amp
maximum current draw. It is ideal to
control the speed of a fan, toy motor,
model train and so on.
841732 ....$15.95
or
$14.95
ea./10+
Sound Activated Circuit Ideal kit for robotic and automation
projects. By using sound or voice
sources, a relay is energized. Increase
or decrease the microphone level with
the sensitivity adjustment.
841128
Kit
....$9.95
or
$8.95
ea./10+
AS
LOW AS
$
1
95
Temperature Control Circuit
General purpose thermostat with a NTC
temperature sensor with a range of (41° F 86°F).
A relay output controls high power load with
a 30 second hysteresis. Use with #430202
enclosure on page 306.
841591
Kit
..................$9.75
or
$9.45
ea./10+
SENSING & CONTROL KITS
LIGHT KITS E L E C T R O N I C S
KELVIN
®
ECONOMY KITS
Copyright © Kelvin L.P.
1-800-535-8469 (9AM to 5PM E.S.T.) FAX: 1-800-756-1025 OR 1-631-756-1763
www.kelvin.com
265
Audio Level
Meter Uses an
LM3915 Bar
Graph IC and
audio pre-
amplifier stage
to measure
an audio level.
The Meter
includes a
sensitivity
adjuster to
increase and decrease the mics sensitivity level.
841127
Kit
........................$9.95
or
$8.95
ea./10+
Continuity
Tester This is a real test
instrument! When
trouble-shooting, it
is a great tool to
test for continuity
in a circuit. It has
a built-in buzzer
for a clear audible
sound. PC board
measures 1-1/2x
1-1/2.
841241
Kit
........................$6.45
or
$5.95
ea./10+
Water
Level
Meter How much fluid
is left in your
tank? This kit is
a great tool to
determine the
liquid level in
a container. PC
board measures
2-1/2x2.
841126
Kit
........................$5.95
or
$4.95
ea./10+
Dual Power Supply
This kit contains all parts necessary to build a dual
adjustable power supply to power your projects.
Outputs positive-negative voltages from +/-1.25
to +/-15VDC at 700mA per supply.
841590
Kit
....................$23.95
or
$22.45
ea./10+
220136
Wall Adapter
..................................$12.95
Moisture Sensor Use this kit to check the soil moisture of plants
and keep them alive! By placing probes in the
potting soil of the plant, the moisture level is tested
and a buzzer sounds if the level is low.
841132
Kit
........................$6.95
or
$5.95
ea./10+
Kel-Function Generator Real test equipment for an electronic technician
or hobbyist. Produces sine, triangle and square
waveforms with frequency range between 100Hz
to 100KHz. Includes an amplitude adjustment. Use
with #430202 enclosure on page 306.
841571
Kit
....................$12.75
or
$12.45
ea./10+
20 Watt Audio Amplifier
All the parts necessary to build a 20W Mono
Hi-Fi Amplifier using a LM1875. Amplify any small
signal and drive an 8 ohm speaker with 1% THD.
Requires a 12-30 V DC power supply.
841570
Kit
....................$15.95
or
$14.95
ea./10+
20+20 W
Stereo Audio Amplifier
A high quality stereo audio amplifier which operates
from a 12-30 Volt DC power supply. This kit
contains all the parts necessary to build a 20+20
Watt stereo Hi-Fi Amplifier using a LM1875 to
amplify any small signal and to drive an 8 ohm
speaker with 1% THD.
841593
Kit
....................$21.95
or
$20.95
ea./10+ - Requires a 9V DC Battery (#220019). - Requires [2] 'AA' Batteries (#220016). - Does include enclosure shown.
AUDIO KITS
Booster Audio Amplifier Amplifies music from a portable CD player, audio
project or any audio signal up to 1W and relays it
to a speaker with volume control (speaker included).
841133
Kit
........................$5.45
or
$4.45
ea./10+
TESTING KITS KELVIN
®
ECONOMY KITS
E L E C T R O N I C S
Copyright © Kelvin L.P.
266
www.kelvin.com
KELVIN
®
280 ADAMS BLVD. FARMINGDALE, NY 11735 USA
Big Ear
Amplify sounds from different sources (far away,
birds, conversations. Add a parabolic reflector
and hear blocks away. This kit contains all parts
ne