

PhilmoreDo-It Yourself or DIY kits are well documented circuits that have been carefully engineered and tested by experts. Designed to have an educational value for students that are in the beginner-intermediate range of learning electronics. Most have functions that can be handy in various day-to day usages; or perhaps just fun to play with. Each kit is supplied with all components (unless stated otherwise and a professionally made printed circuit board. The PCB is silk-screened with component placement patterns for easy parts location and assembly. Very clear documentation helps with assembly applications and understanding the theory behind the electronics being used.Schematics provided with all DIY kits.
You will need a few tools, such as a side-cutter and a long-nose plier, a soldering iron and solder.
This is a basic low cost counter module. Two or more may be plugged
together with 6-pin sockets and harness provided. Excellent use as
event counter. Uses a singe 3-digit display. Uses the 14553 and 14551
chips. Has count and reset switches with debounce built in to
eliminate problems with from noisy switches. Two or more may be joined
to make 6 or 9 digit unit. Display may be located remotely. Plastic
case included, 9 volt battery operated.
No. 80-020 LCDTemperature Meter
The temperature meter uses the Harris 7106 IC as the heart of a low
cost, accurate temperature meter. LCD 3-1/2 digit readout. All of the
active circuit is in this one, versatile chip. In addition
to temperature functions, the board includes an area for building
your own voltmeter, ammeter, resistance or extended range
temperature meter. Takes the mystery out how multimeters work.
Includes all parts for temperature meter and case. 9 volt
battery operation.
No. 80-030 LED Dice with Slowdown
This is a excellent kit for use as an introduction to
electronics and circuit analysis. Seven LEDs arranged like a real die
face. Push the switch and the die rolls and then slows down, stops.
Ingenious circuit design used to minimize components. Uses 14017 &
555 timer. Includes plastic case; 9V battery operation.
No. 80-040
This is a practical battery eliminator for your projects. This is a
bank power supply using two 7305 regulators; input up to 20V AC from a
transformer. Two regulated outputs-5V fixed, the other variable.
Includes plastic case. A good introduction to power supplies,
electronics.
No. 80-070 3 Volt FM Transmitter (bug)
The most powerful bug available for operation on a 3 volt
supply, considering the low component count. Will easily transmit over
100 yards inside building and 500 yards in the open. Easily tunable
in the FM band. Greater range at higher voltage and
better aerial.
No. 80-080 Light Alarm
Detects very small amounts of light and sounds a Piezo alarm.
Put it in your cash box or cupboard. Uses Darlington photo
transistor MEL12 and 14011 IC. A very education kit.
No. 80-040
An educational learning module. Build and experiment with
the astable, monostable and RS flip-flop multivibrators on the one
PC board with six LED's. See and understand exactly how each works.
An excellent introduction to electronics. 9 volt
battery powered.
No. 80-100 Touch and/or Contact Switch
Both a touch switch and contact switch are built onto the one
PC board so that you can see and explore how each type works. A
battery can power the touch switch (2 contacts) but an AC power supply
(like No. 80-040) twist be used for the touch part to work properly.
High quality 12 volt relay rated at switching 240 volts, 3 Amps
is included.
No. 80-120 Audio to Light Modulator
Introduces the Optocoupler-triac MOC3010 and Triac.
Complete electrical isolation between input audio signal (low voltage
circuit)and output light modulation is achieved.
No. 80- 130 Sound Activated Switch for Tape Recorder
May be adjusted to run on your tape recorder via its REMOTE
plug. Has feedback and delay circuit for robust operation. Very
sensitive; proven circuit. Needs 6 Volt supply. (NOTE: Does not
improve sensitivity of tape recorder itself.
No. 80- 160 FM Telephone Transmitter
Miniature transmitter attaches in series to your telephone
line, transmits the conversation. Transmits over 200 yards to an
FM receiver. (Much further it your FM receiver is close to a
related telephone wire.) Tunable to clear spot in the FM band. Uses
the phone line as an antenna and as a power source; parasitic: needs
no battery. Not intended for illegal use.
No. 80-170 Audio Amplifier Module
This kit uses the National Semiconductor LM386 IC and is
intended for use with other projects where a good, battery powered
and variable gain audio amp is needed. Includes the data sheets
from National Semiconductor. Designed to be used as a building block
in other projects where a battery powered, variable gain audio
amplifier is needed. For example, radio amplifiers, ultrasonic &
serverdrivers, voltage converters. May be operated with batteries
from 4V to 12 V DC.
No. 80-200
A matched pair of 40 KHz transmitter and receiver
transducer elements detect movement at over 22 feet. Separate PC
boards for mounting active units. Latch/reset PCB mounted switch on
board. Sensitivity is set via control. Crystal locked circuit for
maximum stability. A good circuit for detecting intruders, pets, etc.
and then turning on light alarm bell, etc. 9 volt
battery operation.
No. 80-210 Two Station Intercom/Hard-wired Bug
The is a basic "hard-wired" intercom that requires you to run
a pair of wires between the two stations. Each unit has its
own speaker, mike and amplifier (LM386). Can be modified to act as
a hard-wired "bug". It you use a four strand wire, the power may
be sent to the Bug unit from the monitoring unit.
No. 80-220 Xenon Tube Flasher (9volt)
A bright, variable flash rate strobe light. This is a 9
Volt battery powered xenon tube flasher. The transformer is supplied.
Wire is pre-wound on the bobbin but you must do the final winding of
the two outer coils. This can be a useful and educational kit; such as
in photography.
No. 80-230 OpAMP Function Generator
A very low cost and simple circuit to generate
square, pseudo-sinewave and triangular waveforms in the Audio
frequency range. Uses a quad opamp LM348. Good educational
kit.
No. 80-240 Logic Probe
An indispensable piece of equipment tor testing and
measuring digital equipment. Normally used for fault finding and
testing but can also be a great help in design work and to see how
digital equipment works. Switch for use in TTL or CMOS. Our own modern
design using a PUT. Includes detection circuit for very fast pulses.
Gives visual indication via 3 LED's and audio indication via
piezo sounder.
No. 80-260 Fiber Optic Audio Link
Uses a matched transmitter/receiver pair from Motorola. Allows
you to send sound through plastic 1mm fibre optic cable. Two
circuitboards with a microphone at one end and a speaker at the
other. Includes 14 feet of fibre optic cable. Will work over
220 yards.
No. 80-270 One Watt Audio Amplifier
This circuit is intended to be a building block for use with
other kits, your own circuits, etc. where a battery powered monaural
amp is needed. This is a Phillips TDA7052 IC based, 1 watt power
amplifier. Battery operated from 3 to 15 volts, 6 is optimum. Output
to an 8 ohm speaker. The circuit board is very small, just 1-3/16"
square (tallest component stands about 5/8" tall). Few components are
needed and no heat sink required. Frequency response 20 Hz to 20
Khz. Complete data sheet included.
No. 80-280 Sound Activated FM Transmitter
A sound activated switch and FM transmitter hybrid; sound turns
on the transmitter. Sound switch activation level is user set able.
Two state transmitter has excellent range. When no sounds are
present, the transmitter is powered down to save power.
No. 80-290 Electronic Combination Lock
This is an excellent introduction to security devices. Set your own
four digit code; any wrong key in sequence resets the lock; correct
sequence activates the relay (up to 240VAC contacts). A 9-digit key
pad circuit board is separate and connects via ribbon cable, 30'
supplied. Requires 12 VDC battery or supply.
No. 80-300 PIR MovementDetector
This is an excellent security device, sees infra-red heat
of intruder in field of view. This is a recent design for a
PIR detector. It should not be underestimated. Rather than the
usual opamps, amps, and amplifiers, this kit uses a movement IC. Has
PCboard mounted Fresnel lens. IC has circuits to turn off detector
in day light. Two levels of sensitivity.
No. 80-310 9 Volt Siren
A simple siren circuit and a surprisingly loud output. Uses voltage
controlled oscillator and comes with a half watt 8 ohm speaker. Good
as a sound module to attach to an alarm system, etc. 9 volt DC
operation.
No. 80-320 Two-Stage FM Transmitter
This is an extremely sensitive and powerful FM bug that
transmits to the upper part of FM band. A two stage, three transistor
FM transmitter, that operates on a 9-volt battery. The most
sensitive and powerful that you can legally buy. The circuit employs
an electret microphone for added sensitivity. Unit can run on six
volts, with the greatest output at 12 volts, but uses 9 volts and the
short antenna, included, to stay legal in U.S. PCB is only 3/4" wide
by 2-3/4" long.
No. 80-330 Low Voltage Phone Recorder Switch
This circuit is intended to switch on a miniature tape
recorder when the telephone is used. It will switch some of the
smallest units that operate on voltages as low as 1.5 volts, which
many older circuits cannot handle. Plugs into the REMOTE and MIC jacks
of recorder.
No. 80-340 General Purpose 3-1/2 Digit Panel Meter
This LCD panel meter is a very fexible design that can
be customized to your own VOLT meter or AMP meter needs. It may
be customized to measure any voltage range, standard or not. It also
can be customize to measure input from a transducer; full details
are included. The LCD readout may be mounted away from the main
circuit if needed, interconnected with ribbon cable.
No. 80-680 Variable Power Supply
This is a basic adjustable voltage power supply with a range
of about 1.5 VDC to 35 VDC set by a potentiometer. It is capable of
2 amps if you add a simple heat sink. Circuit includes short
circuit protection.
No. 80-350 DC to DC Converter
This unique little circuit permits you to use one or two 1.5
volt batteries in place of a 9-volt battery; a real cost saver. An
easy introduction to switching power supplies. Generally it is far
less costly to use one or two 1.5V in place of a 9 volt. The circuit
uses the Texas Instruments TL496 IC and can handle circuits up to
100mA. Recomended for use in many miniature circuits in
this group.
No. 80-820 Movement Detector Components
A bit different from other kits. We supply the three
basic components for you to make your own movement detector. Included
is a PC8 mounted fresnel lens, a PIR movement sensor and the
latest movement IC just released. Eight pages of application notes
show you how to proceed.
No. 80-630 One Cute AM Radio
Complete AM radio on a PCB. Tuned radio frequency front-end,single chip RF amp and detector and two stages of ampilification for audio into a speaker. All components supplied. Coil prewound. Good for schools.
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No. 80-910 Four Train Sound Effects
This COB project will produce four very realistic, user selectable,
sound effects that are ideal for model railroads. Throw any of four
switches to produce: a train whistle blowing 3 times, a train chugging
along, a level crossing bell and the "clickety clack"of a train
crossing a bridge. The 80-910 may be cascaded with one or more
additional 80-910 so that one sound ending triggers the next unit for
another sound. Kit includes all parts including speaker. Easy
assembly; operates on 2.4 to 6 volts DC.
No. 80-920 Cellular Phone Sound Effects
The COB used here were designed for applications in fake
cellular phones, childrens' cellular phones, etc. This one is a lot
of fun to play with. It produces eight sounds typical of cellular
phones that can provide a youngster with a lot of entertainment.
Operates from 2.5 to 5 volts DC.
No. 80-930 16 Assorted Melodies
Talk about a circuit that would be great to build into a toy for
a little kid...This COB produces sixteen different melodies. When
the switch is pushed, the first mellody is triggered and plays
through. Each song is played in turn with each subsequent trigger. An
LED driver is available and its output synchronizes with the rhythm
of the tune. Some of the tunes are:
No. 80-940 Ambulance, Fire and Police, and Machine Gun Sounds.
This COB kit is another that is fun for children's toys.
Three different siren sound effects emulate fire and police. The
circuit may be set up to trigger the sound for about eight seconds, or
sound may be turned on continuously at your option. The fourth sound
is that of a machine gun firing.
No. 80-950 Happy Birthday COB (chip-on-board)
This one does not require any assembly, unless you want to
install it in a package or birthday card. When an insulator is moved
aside, the circuit plays the "happy birthday" melody, through a
tiny on-board speaker. This is kind of corny but boy can you get to
a girl's heart with this little device. A really nice surprise to
send to your Dad too. (Naturally, he'll feel certain that you're
a genius.)
No. 80-840 117 Volt AC Relay Bound
Many electronic projects use a low voltage circuit, such as a timer, light sensor, dark sensor, temperature sensor, and a movement detector, and output a signal when a certain predetermined event occurs. This signal is often a rising or falling 12 volt pulse: but then what do you do with it? You use it with this circuit to control a relay capable of handling up to ten amps (or 5 amps @ 240VAC).
The circuit includes a DPDT relay with a life expectancy of
about ten million cycles. Be sure to house this circuit in a suitable
case, well insulated and safe for every one that may ever be
around it.
No. 80-550 Suction Cup Phone Pickup with Amplifier
No electrical connection to the telephone is required. Attach
a suction cup to the hand set and turn on the amplifier. This
project permits group listening to phone calls, or you can monitor any
other oscillating electrical field. Dual IC's provide a good
quality amplifier. The circuit runs on 6 volts DC. Everything is
included except the batteries.
No. 80-580 Infrared Toggle Switch
Control about any device using the remote control from just
about any TV set. The circuit switches an on-board SPDT relay. Turn it
on with the remote, and turn it off with another signal. The
relay contacts are rated one amp at 125 volts AC. The circuit operates
on any DC supply from 8 to 15 volts. Use an old calculator supply,
etc. This circuit can have some very practical applications, such
as turning on a light by an invalid. Your imagination is
the limit.
No. 80-104 Stereo Preamplifier Kit
Amplify any tiny audio signals about fifty limes, and deliver
them to a power amplifier cleanly and undistorted. An AGC (automatic
gain control) eliminates pops or distortion. This circuit will be
useful in boosting the output from tape heads, microphones, or a
magnetic phone cartridge, etc. For input to an audio amplifier.
Requires a 12VDC power supply at about 100 mA peak.
No. 80-102 Universal Timer
Set timer for any where from a few seconds to about 15 minutes. Control AC appliances. It will beep and trigger a relay when it has timed down. May be used for darkroom or PC board exposure timer, exit room timer, etc. Turn anything on or off. Operates from 9 volt transistor battery.
No. 80-790 Three Light/DarkActivated Relay Switches
This kit has three separate circuits in one; three separate
PC boards, etc. This one will give you both useful circuits
and experience in different approaches, circuit-wise, to doing the
same thing; controlling a device with a change to either light
or darkness. Each kit is equipped with a relay rated up to 240VAC @
5Amps. You may either turn "on" or "off" the controlled device. A
good kit for student learning electronics.
No. 80-470 8 Watt Audio Amplifier
Low voltage operation does not mean low power. This amplifier can produce a full eight watts into a standard four or eight ohm "load" such as a speaker. Actually, it can deliver up to 11 watts if you use a 18 volt supply.
You may use this amplifier with a wide range of power
supplies, from 5 volts to 20 volts. The IC has built-in current
limiting and over-heating protection. An ideal building block for use
with many other projects. The audio quality is excellent.
No. 80-710 Programmable Dice
The idea on an electronic dice game of one kind or another
is almost as old as glaciers. But this one is very clever and
includes software on a floppy disk (for the IBM PC) plus a huge
manual describing how such things work, software for other projects,
etc. This may be the most educational kit in the line.
No. 80-101 Home/Car Alarm
This circuit in an alarm for the home or car door, and a lot
more. It employs a magnet and reed switch to trigger the circuit.
An integral piezo sounder produces the alarm sound (100dB). But, a
relay capable of handling up to 10 Amps AC may be connected to turn on
or off an appliance, external alarm sounder, etc. Therefore the
circuit could be used to turn on a light whenever a basement or garage
door is opened and so on.
No. 80-870 1 Watt Stereo Amplifier
An amplifier designed with portability in mind; ideal for
battery applications. A full watt from each channel, excellent
fidelity. Uses a Samsung KA2209 IC. Small size; the board is 1-3/8" by
2". All basic parts supplied, including PC board; you supply two 8-ohm
speakers. A six volt or nine volt battery pack is suggested using AA
cells. Use D cells if extra long battery life is required. Suggest
uses are for amplification of a CD or Walkman.
No. 80-060 FM Stereo Transmitter
This is a circuit that will broadcast CD quality sound to your
FM Walkman, home stereo or automobile radio. It produces a strong
signal that will generally cover the average home and yard. It is
stable enough to use even with digitally tuned FM receivers. Typical
uses include broadcasting your own music to a receiver at pool-side or
in a garden. Or, you could broadcast from a personal, portable CD
player to a car radio that has no CD player. School uses include
running a "broadcast station" from another room as a speech class
exercise. The unit is powered by a nine volt transistor battery, or an
AC wall adaptor.
No. 80-050 44 Watt Stereo Power Amplifier
The circuit is a gem; a TDA1554 IC is used to produce an
amplifier that will output up to 22 watts per channel with distortion
typically not in excess of 0.1% thd. Sound quality is very, very
high. Originally intended for use in an automobile, the kit could be
built for home use. If you build it to power-amplify your car stereo,
be sure that your speakers (4 ohms best, 8 ohms OK) are big enough
to handle the power. Special Note:
An automobile generally provides from 13.6V to 14.4V when engine
is running. Any thing between 12 volts and 14.4 volts DC will do but
the amplifier can draw as much as 5 amps, so the average "wall
adaptor" is not going to work. If you do use an AC operated power
supply; get a clean one with very low ripple.
No. 80-740 Portable Port Relay Board, for the IBM PC (software included)
With each advance in personal computers, a surplus of unwanted older machines increases, either at give-away prices or you may have one sitting on a shelf. Thus you can have a low cost, sophisticated "dedicated controller" to turn on or off devices in the home, lab, or radio shack, etc.
The circuit includes eight relays controlled with
(included) software for either DOS or Windows 3.1 The kit is a boon to
the Science Fair project, laboratory experimenter and so on. Connects
to the parallel port.
No. 80-670 DC Motor Speed Controller
Vary the speed of DC motors the very best way with this kit.
Gear boxes can be costly and series resistors may cause stalling.
This circuit delivers the voltage to the motor with pulses and the
speed is controlled via pulse width modulation (PWM). The speed
control is a potentiometer, for DC motors up to 100 Volts at a maximum
of five Amps.
No. 80-850 Three Timer Circuits
Timer circuits are handy for many experimenters'
laboratory functions, not to mention the photo or PC tab. This kit is
another three-in-one in that all three circuits are complete and
separate; simply using different types of circuits to do exactly the
same job. All come complete with 5 amp relays for controlling
pretty significant loads. All may be operated on battery or light
weight (9VDC) supply. The advantages and disadvantages of each design
are discussed in the text.
No. 80-900 3 Watt Stereo Amplifier
The Rohm BA5406 IC is used to make this powerful little
stereo amplifier. The entire circuit is on a 1-1/2" x 2-1/2" circuit
board. You'll need to allow added space of 1-1/2" x 2-1/2" for the
heatsink, plus ventilation for same. In addition to a 12 VDC power
supply (batteries), you will need to provide 4 or 8 ohm speakers,
cables and a heat compound to put between the IC and the heat
sink.
No. 80-375 5 LED Multi-Sequential Flasher
Flashes five, very bright LED's in any of one of seven, user selectable, patterns. A COB (chip-on-Board) IC makes assembly very easy; the chip is supplied premounted on its own board and amother board contains the entire circuit. Operates on 3 volts DC, battery holder is included. Continuously repeats a sequence when power is supplied.
No. 80-105 Voice Changer
Your voice can be changed to add a vibrato, like those used
to disguise secret witnesses. Or, you may change your voice tone
upward or downward; women sound like men and vice versa. Includes a
very ROBOTIC voice as well. A microphone and speaker are included on
the PC board, all that you need to add is a nine volt,
transistor battery. This is a very novel and entertaining
circuit.
No. 80-103 Photo Sensor with Control Relay
The most popular usage for this kit is to make your own
nightlight. But, you could switch just about any appliance either on
or off with either darkness or daylight. Light sensitivity is
adjustable over quite a range. The relay can handle up to 10 amps AC.
You need to add a nine volt transistor battery or a nine volt,
25mA supply.
No. 80-106 Sound Effects Generator
Another novel circuit, that might be useful for special
theatrical effects. Or, if you are simply a practical joker. The
circuit can produce sounds such as the tick-tock of a grandfather's
clock, a heart monitor (as in the hospital), water on a tin root, a
motorboat, cricket, etc. Requires a nine volt battery. Includes its
own speaker.
No. 80-880 Stereo VU Meter
This Is a very eye appealing audio accessory. Displays
an approximate output level for each channel of stereo
amplification. Connects to the speaker terminals; levels are displayed
in ten discrete steps. User may select either a moving dot or
bar appearance. Uses two LM3915 IC's; includes a discussion of
measuring audio power.
No. 80-915 17-1/2 Watt Mono Amplifier
A high quality audio amp that can operate on a low voltage. 12
VDC recommended. Uses the Hitachi HA13001 IC and a dozen
external components for a compact and powerful monaural amplifier.
Builder must supply his choice of speaker (4 or 8 ohm) and some heat
sink grease to apply between the IC and the heat sink. Includes PC
board and all parts. Build two for stereo.
No. 80-525 Sequential Flasher
The circuit flashes five LED's in sequence repeatedly until you turn it off. Flash rate is user adjustable. The circuit usess an IC chip-on-board which you will then mount on the included motherboard; battery holder is included.
Powered by a 3 Volt supply or battery; good for a child's toy
or for those "high-tech" looking special effects for stage
plays, etc.
No. 80-150 6-12 Volt Alarm Module
or SCREAMER
The loudest piezo alarm that you will find: 10dB to 11dB output @1
meter. The kit includes a resonant cavity mounting case which
is molded plastic, 2" x 3-1/4" and 1-1/4" deep, plus mounting ears.
If you want to totally startle a burglar, this is the kit to
assemble. Operates on 6 to 12 volts. You'll need a good supply: it
draws about 500mA maximum.
No. 80-005 STAIRWAY TO
HEAVEN Game
Pressing the switch while a dual LED is green advances you to
the next stage; but mess-up and press while red, and you go back to
the beginning. It can be tricky and a challenge. Fun and teaches
some practical basic electronics. Operates on 9V battery.
No. 80-570 ION
Generator
Are there some healthful positive benefits caused by being in
an environment that contains negative or positive ions? Some
reports suggest a wide range of benefits. This generator can be set up
to generate either negative or positive ions; the builder's
choice. Operation is from 117 Volts AC power line. You will need to
find a case or box for the final assembly, about 2" x 4-1/4" and an
inch depth; and an AC power cord from an old amp (or buy new). You
can actually feel the flow of ions from the unit.
No. 80-088 10 Watt X 10 Watt
Stereo Amplifier![]()
Employs the TDA2009 class AB audio power amplifier IC for
quality stereo applications. May be operated on a supply voltage of 8
to 22VDC. This is a very straight forward stereo amplifier: complete
witha PC board (about 1-3/4" x 3"). Powerful enough to power your
stereo for a mid-sized room and more than enough for use in
an automobile.
No. 80-014 Light Activated Music
Box Engine![]()
This circuit will play a tune when light strikes a light
dependent resistor, such as when a music box lid is opened. You can
select any one of about a dozen romantic melodies: play just one or
let the unit cycle through all of the tunes. Operates on 3 VDC. Two AA
cell holder included. You could really wow a girl friend or simply
please your mom.
No. 80-980 Monaural Preamplifier
Our audio amplifier kits works very well, but if your input is
a tape head, magnetic phone cartridge or electret mike, the input
level may be too low to do the job. This small preamp can be used in
these applications; plus, we have included a mike that may be used
with the circuit. Power at 6 V to 12 V (current at 12 V is 3mA, only
2mA at 9V). The gain is more than 40 dB.
No. 80-118 12 bit Data
Acquisition System
The circuit, once built, connects to the parallel port of a PC for data input/output. Uses the Maxim 186 IC; collect analog and digital information and store them on the hard drive. Included software can display and interpret the data, provide trends etc. This is a very sophisticated little device and software (good Science Fair stuff too). Manuals and software are zipped on an included diskette. This is for somewhat sophisticated users that know their way around a PC fairly well. Not for beginners. Power with 9 or 12 VDC.
Optic Emitters and
Detectors
Everything from audio systems to computer aided machines control becomes clean and free from outside interference with fiber optics. Here is a family of low-cost, medium frequency emitters and detectors for use over "short" ranges. A PVC housing is used universally to house all of the various devices that are most commonly wanted for fiber optic circuits. Low cost, 1000 uM fiber connects via a knurled-nut arrangement on the universal housing; no special tools or training needed. A razor blade is the only tool that you'll need.
Now is the time to design the interference free, fiber
optic devices that you've been thinking of; and at a low cost. The
chart below shows the various devices available, ranging from a
photodiode to sophisticated photologic detector. Full specifications
are published separately.
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No. 80-495 1000 Micron (l mm) Fiber Optic Cable with 2.2mm Outer Jacket
For use with any of the above emitters and detectors. This is
a plastic fiber optic cable that does not need special polishing
or grinding for excellent performance. To cut, use a very sharp
hobby knife or razor blade and simple cut as squarely as possible. May
also be used to conduct light for pinpointing spots on a map and so
on. A very good cable at a low cost. Coil of 25 ft.,
display packaged
No. 80-405 Fiber optic Kits for Instruction or Science Fair Projects
EDUCATIONAL COMMUNICATIONS KIT economical.
Promotes learning about fiber optics with serious hands-on experience,
The Communications Kit is a digital link that is suitable for use as
a data link, high-voltage isolation, computer interfaces, etc.
Included are matched fiber optic transmitter and receiver, one meter
of fiber cable, PC boards and all of the materials needed. Also
includes a comprehensive booklet which explains the basics of fiber
optics, theory and operation. Requires assembly and soldering.
Complete Kit, display packaged
No. 80-415 OPTICAL VOICE LINK KIT, an excellent teaching aid
There is something rather wondrous about hearing your voice converted into light energy and reconverted to sound at the other end of this circuit. This kit has probably won more Science Fairs than any other type of project. For students and experimenters alike. The kit contains PC wiring boards, switches, the electronics and microphone, speaker and optical fiber (3 meters) as well as uncomplicated step-by-step instructions. Required assembly and soldering.
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