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PRINTED CIRCUIT
BOARD: Ready to solder, roller tinned and epoxy coated PCBs in
phenolic board, unless mentioned otherwise, for the projects
published in ''''''''Electronics For You'''''''' magazine.
(Photocopies of circuits not supplied with PCBs). |
|
S.No |
Products |
Current Price
(Rs) |
|
59 |
MOSFET Based
Pre-Amplifier for FM Radio DXing (Nov.2003)
Frequency Modulated (FM) transmission can be
received within a range of about 40 Kms. To
receive your favourite FM radio station beyond
this range, the only option left is to connect
an external pre-amplifier at the receiver end.
This circuit acts as FM booster attached to your
present FM radio receiver and enables one to
receive FM in fringe areas. Number of ICs used:
None |
220 |
60
 |
Microcontroller-Based Speedometer Cum Odometer
(Nov 2008)
This project
describes how to build a digital
speedometer-cum-odometer for your motorbike. The
features of the project are digital readouts for
speed in km/hour and distance in kilometres,
economical and easy to construct. It is a better
alternative to the mechanical speedometer and
even a beginner with minimal skill level can
assemble it. The circuit uses an AT89C2051
microcontroller, a 16x2 LCD display, 4N35
optocoupler, 24C02 EEPROM and some easily
available components. |
1000 |
|
61 |
Microcontroller Based Ultrasonic Distance
Meter(Feb-2008)
This project
employs 40khz ultrasonic transducers for
distance measurement up to 2.5 metres.Ultrasonic
transducers measure the amount of time taken for
a pulse of sound to travel to a particular
surface and return as the reflected echo.This
cicuit calculates the distance based on the
speed of sound at 25 digree celcius ambient
temperature and shows it on a 7-segment
display.Some of the main components used in the
project are:AT89C2051 microcontroller,two 40khz
ultrasonic transducers(one each for transmitter
and reciever),current buffer ULN2003,operational
amplifier M324,inverter CD4049,four 7-segment
displays,five transistors and some discreet
components |
1150 |
62
|
Microcontroller-Water level controller cum motor
protector (Feb-2007)
This circuit uses an AT89C51 microcontroller as
the main controller. It can be used to switch ON
and OFF the motor depending upon the level of
the water in the tank. The status is displayed
on an LCD module. The circuit also protects the
motor from high voltages, fluctuations of mains
supply and dry running. |
1350 |
|
63
|
Mobile Phone Battery Charger (Jan. 2002) |
100 |
|
64 |
Multi Melody
Generator with Instrumental Effect (June2006)
This versatile melody generator is capable of
generating various English and Hindi version
melodies using UM3481A and WR630173 tone
generator respectively. Instrumental effects can
also be produced with the same circuit.The
advantage of this circuit lies in its ability to
select various modes of melodies through DIP
switches, instrumental effetc,high volume and
volume control provided in the circuit. |
160 |
|
65
|
Multiswitch Doorbell with Indicators (April
2003) |
210 |
|
66 |
Multitester with Audio-Visual Indicator (Feb.
2002)
Test the condition of electronic components like
resistors, capacitors, diodes, photodiodes, and
transistors by both visual and audio indication.
The tester is also useful for checking
continuity between two points. Number of ICs
used: None. |
70 |
|
67
|
Musical Door Bell (with memory) EP Vol 16. |
80 |
|
68 |
Musical
Hold On for Telephone (EP Vol 18) |
70 |
|
69
|
Musical touch Bell(March 2001)
This musical bell operates just by the touch of
your fingertip, obviating the need for a
mechanical switch. Useful in homes and offices,
it can operate off a single pencil cell. Number
of ICs used: 1. |
70 |
|
70
|
Parallel Telephone Ringer (June 2002)
Due to high volume of your hi-fi audio/video
systems or any other reason sometimes telephone
ringing in other room is not heard. In addition
to provide indication that your telephone is
ringing in other room this telephone extension
ringer avoids overhearing of conversation by an
undesired person at other end. Number of ICs
used: 1. |
100 |
|
71
|
PC-Based Automatic
Time Manager(Aug 2007) |
250 |
72
|
PC based Oscilloscope (Dec''02)
This kit conditions different signals of
frequency below 1KHz and displays their
waveforms on the PC’s screen. The hardware
converts input waveform to digital format for
interfacing to the PC. The software written in
‘C’ language acquires data into PC and
displays it on screen. The program provides
facility to alter the display and timing
settings so that input waveform is correctly
reproduced. Number of ICs used: 8 |
525 |
|
73 |
PC
Based Timer (Feb 2005)
This circuit interfaced with PC computer through
D-25 pin male connector, can switch on and
switch off the device for a particular timing
required by the user. The program is written in
C languages & compiled in Turbo C compiler.
The maximum timing of the circuit is for 18
hours.Number of ICs used :- 1. |
170 |
|
74
|
PIC Burner:-The Programmer for PIC16X8X
Micro-controllers (With Sample Project of Melody
Generator): (Sept. 2002):
This kit contains all the necessary items to
build a programmer for PIC16X8X series of
micro-controllers. PIC16F83, PIC16C84, PIC16F84
and PIC16F84A are some of the many
micro-controller ICs from Microchip technology
Inc. For demo purpose, one sample project
“PIC16F84 Based Melody Generator” is also
included here. The programmer and sample project
details are explained separately. The programmer
software, assembler and general details
pertaining to PIC are included in CD. Number of
ICs used: 4 |
1000 |
|
75 |
Pocket
FM Receiver excluding Cabinet (sept. 95) |
250 |
76
|
Portable Ozone Generator (June
2000)
This handy unit to be plugged into mains to get ozonated
air at suitable pressure, flowing out from the tube. Ozone gas is
now-a-days used for treatment of drinking water, dis-infection and
air purification. Number of ICs used: 2. |
1600 |
77
|
Power
Failure Indicator (E.P. Vol 16)
The power supply failure and
blown fuse condition both are indicated by sounding an alarm using a
loudspeaker. Number of ICs used: 1. |
140 |
|
78 |
Power failure
resumption alarm
This circuit sounds an alarm whenever AC mains fails or resumes. It
can be easily installed where you want to monitor the status of the
mains supply. Number of IC used:- 3. |
150 |
|
79
|
Power
Supply Failure Alarm (July 2001)
This circuit indicates power
supply failure by sounding a buzzer. No external DC supply is
required and power-on condition is indicated by a LED. Time duration
can be varied with little modifications. Number of ICs used:
None. |
180 |
|
80
|
Powerful Pest Repeller (June 2000)
The high-frequency signal generated by a transformer is useful
as pest-repeller. The intensity can be easily varied by tuning the
preset. Number of ICs used: 2. |
200 |
|
81
|
Quality FM
Transmitter
The digital like sound quality that FM offers is the reason that
many people prefer to have their own transmitting station in FM
band. This quality FM transmitter can transmit chosen music in FM
band. To receive its signals, any conventional FM radio receivers
can be used. Without complicating the functionality, this circuit
transmits the signals just by using discrete components. It provides
an easy way to transmit less distorted, low noise music with in a
range of about 200 meters. Number of ICs used: None. |
180 |
82
|
Remote Control Digital Audio Processor(Feb2005)with remote in NEC
format.
This infrared (IR)remote controlled digital audio processor has four
stereo input channels and one stereo output.The processors in this
system control various functions of each channel and output them to
your audio amplifier |
1500 |
|
83
|
Remote Control for Home Appliances (April 2005)
This handy circuit can be used to switch on and off any of your home
appliances or any electrical device with a single press of your TV,
VCD or DVD remote control. This low-cost circuit is based on 4017
counter IC which receives trigger pulse from IR sensor and switches
on the relay through which electrical devices are switched on & on
receiving the 2nd pulse the device is switched off.
|
200 |
84
|
Remote Controlled Land Rover Robotics(June 2006)
The project integrates a number of circuits to achieve the working
model of a Land rover vehicle. It can be remotely instructed to
perform simple functions through appropriate push-button switch on
the remote control like : move forward, backward, right and left
directions. Provision is also made for its automatic stop on
encountering a physical obstruction while moving in forward and
reverse directions. It has the features to select either infrared (IR)
or radio frequency (RF) mode of operation. Use of discrete logic ICs
allows a complete understanding of the operational logic of Rover’s
working principles, using their truth tables.
|
3000 |
85
|
Remote controlled real time clock with device controller
(April-2007)
This circuit is based on ATMEGA16 microcontroller and DS1307 real
time clock chip. A 16x2 LCD display is used for user interface to
display time, date and various settings. A real time clock chip is
set to control five different alarm settings. These settings can
also be used to switch on/off eight external devices. This project
uses a TV remote control with RC5 format.
|
1500 |
|
86
|
Remote
Operated Musical Bell (Oct 2003)
It uses any TV remote control to operate a 12-tone musical bell.
This Infra-Red (IR) receiver unit is capable of responding to IR
rays transmitted from any TV, VCR, VCD or CD player remote. When any
of the buttons on the remote is pressed, the receiver detects it as
pulse through its own IR sensor and plays one musical tone. The
approximate range of the circuit is 10 meters. Number of ICs used: 2
|
200 |
87
|
REMOTELY PROGRAMMABLE RTC - INTERFACED MICROCONTROLLER FOR MULTIPLE
DEVICE CONTROL .(Sep 2006)
This project is based on AT89C52 Microcontroller and DS12887
Real-Time-Clock. It also includes an 82C55 Programmable Peripheral
Interface chip to program the switching operation of 24 electrical
appliances. A 16x2 LCD module is used as a user interface to display
the time setting such as month, date, hour, minute, device number
and on/off status of the device. Philips TV remote control is used
to program the microcontroller and control the devices. Other main
components used in the project include 74LS138, 74LS573, 7400,
ULN2803 and TSOP1738. |
2150 |
88
|
School
/College Quiz Buzzer (MAY 2006)
This audio-visualquiz buzzer circuit given here can be used for up
to eight players.It uese IC 74LS373 and a few passive components. |
500 |
89
|
Secured Room Access System(Oct-2007)
This microcontroller-based digital is an access control system that
allows only authorised persons to access a restricted area.When
someone tries to enter the restricted area by entering invalid
passwords continuously,the system locks itself and can be unlocked
only by the master user.The system compromises a numeric keypad,a
solenoid-operated lock and LCD display.The main electronic
components are Atmega 8535 microcontroller,7806 regulator and MCT2E
opto-coupler. |
1000 |
|
90 |
Security Systems
(E.P. Vol 17)
The moment any person touches the plate of your safe deposit
locker, an audio alarm gets activated. The device can also be used
to check unauthorised entry of persons. Number of ICs used: 2. |
100 |
|
91
|
Sensitive
Vibration Detector( Nov''05)
The Vibration detector (piezo element) in this circuit can be used
to detect the vibration of the rolling shutter guard and alarm you
when unauthorised person tries to open it. The load in the circuit
can be an AC operated electric bell or bulb used as alarm device.
The alarm can be stopped using a push-to-off switch given in the
circuit. |
150 |
|
92 |
Simple
Code Lock (Jan. 2000)
This electronic code lock responds only to
the right sequence of four digits out of nine keys available on the
keypad. Number of ICs used: 2. |
190 |
|
93 |
Smart Cell phone
Holder (July 2005)
This smart cell phone holder
makes sure that you do not forget to carry your mobile phone. If you
have forgotten to carry your cell phone, the led light fitted in the
cell phone holder will stop flashing to indicate that the mobile
phone is not in the folder. |
200 |
|
94
|
Smart-Fluid Level Indicator (Jan.
2000)
This 7-segment display displays fluid level in meaningful
English letters as E for Empty, L for Low, H for Half, A for Above
Average, and F for Full. Number of ICs: 2. |
185 |
|
95
|
Smoke
Alarm (Dec. 2001)
This smoke detector is a photo interrupter
module that activates an audio alarm via a loudspeaker. The
sensitivity can be easily adjusted by varying the preset. Number of
ICs used: 1. |
140 |
|
96
|
Sound
Operated Timer (May 89)
This electronic switch gets activated by
the sound of a clap. It can be used in a sound-operated motor driven
toy car or any other gadget. Number of ICs used: 1. |
75 |
|
97
|
Sound
Scanner, (May 2003) (Sound Based Intruder Detector)
This circuit
monitors happeninings in and around some important place of your
home or office where it is installed. When some sort of activities
occur, audible beeps are heard at another distant place. To monitor
sit-outs, car porches, locker room etc, install kit at appropriate
place with beeper kept at another location where indication is
desired. |
105 |
98
|
Speed Checker
For HighWays(Dec2005)
With the two lasers installed at 100m apart on one side and
corresponding LDRs on the other side of the highway, when the
vehicle crosses the two laser beams, this circuit can check the
speed of a vehicle through the readings on a 7-segment display unit.
It also activates an audio alarm (piezo-buzzer) when the vehicle
exceeds the permissible limit. |
550 |
99
|
Stepper motor
control using micro-controller (Oct''04)
This circuit is based on 89C51 micro controller .It provides to
control the rotation of a DC stepper motor in clockwise as well as
anticlockwise direction. This module is simple and easy to construct
and can be used in many application e.g. Machine control , Robotics. |
1200 |
|
100
|
Telephone Call Recorder (July 95)
This telephone message recorder records all the conversations on
tape-recorder. In case nobody attends the call, it records the
incoming ring signal only. Number of ICs used: 1. |
95 |
101
|
Teleremote- Control
This tele
remote overcomes the range barrier of infrared remotes. Control is
provided through the dial keypad of a remote telephone and switching
on/off operation of up to ten appliances is possible. (This circuit
is meant to control only four devices.) Number of ICs used: 8 |
500 |
|
102 |
Temperature indicator using 89C52 (July 04)
It is microcontroller based temperature temperature indicator that
displaya the temperature in the range of -55 degree celcius to 125
degree celcius. The Indiactor output the calibrated date in digital
form . It uses a temperature sensor Chip. Total No. of IC used - 3.
|
1250 |
|
103 |
Three
Octave Organ (EP Vol 4) |
130 |
|
104 |
Timer
for Students (Oct. 99)
This timer gives alarm after a preset
time period and a few beeps at half the selected time. The timer
could be programmed for other time periods as well. Number of ICs
used: 2. |
200 |
|
105 |
Touch
Dimmer( Dec 2003)
This is versatile three-step touch dimmer for varying the lamp
intensity according to brightness required in the room. The circuit
increases lamp intensity in steps, from off to low, medium, high and
again off. The lamp stages are advanced sequentially by simply
touching the touch plate connected to touch wire. At power–on
condition, lamp is in OFF condition. Number of ICs used:1. |
110 |
|
106 |
Touch
Sensitive Switch (EP Vol 11)
Sometimes one may want to switch a
lamp just by touching it. This circuit provides a very simple and
reliable way to do just that. The connected appliance will be turned
ON by a slight touch of finger at the sensor. Another touch at the
OFF sensor will turn it OFF. This can also be used as a hidden
switch or electronic lock by concealing the touch sensors. Number of
ICs used: None. |
110 |
|
107 |
Two-door Door Bell (June 2000)
This doorbell gives two different tones: one of a lower
frequency and the other of a much higher frequency. Separate
switches can be mounted at two separate doors at the same floor
level. Number of ICs used: 2. |
170 |
|
108 |
Variable Power Supply with Digital
Control (April''o4)
A regulated power supply is one of the most
important and essential requirements in electronic lab. The
available power supply must provide variable outputs in steps. This
kit gives variable and fluctuation-free DC voltage as output in the
range of 1.5V to 12V. It also provides proper display using LEDs as
indicators and outputs here are easy to select. Number of ICs used:4
|
250 |
|
109 |
Versatile
Power Supply
It is a DC regulated variable power supply that can deliver 3.3V up
to 15V ,1Amp output using an adjustable regulator IC LM317. |
250 |
|
110 |
Voice
Recording and playback (Sept''04)
This circuit enables to record a single message of up to 60 seconds
duration or up to eight different messages of 7.5 sec duration each.
In playback mode the circuit plays recorded message either
randomly or in sequential manner. It uses Voice Processor IC as
main unit. Number of ICs used :- 2. |
500 |
|
111 |
Water
Level Controller (E.P. Vol 9)
This circuit provides switching
control of pump motor and pumps water from ground-level tank to
overhead tank when the tank is completely empty. To monitor the
status, each tank is provided with three probes. Number of ICs used:
2. |
225 |
|
112 |
Water
level Controller-cum-Motor Protector kit (Aug. 99)
This device
provides switching on/off of motor, automatic switching off of motor
when overhead tank is full, and low- and high-voltage cut-off.
Number of ICs used: 1. |
180 |
|
113 |
Water
level Indicator (Feb. 97)
This simple and easy-to-install
circuit gives both visual and aural indication when the water tank
is full. You need to fit the probes at the desired water level in
water tank. Number of ICs used: None. |
85 |
|
114 |
Wireless TV Headphone (March 2003)
As most of TVs nowadays come equipped with audio in/out and
video in/out RCA sockets, connect audio output (headphone socket) of
your TV to this circuit to transmit the sound of TV as FM signals.
Using a portable FM receiver with headphone watch your favorite TV
program without disturbing others. Number of ICs used: None. |
110 |
|
115 |
Zener
Diode Tester (April''04)
Many a times the terminal and voltage
markings are not specified on zener diode by manufacturer. Or, it
may happen that these markings are not visible in old or used
components. This kit provides a way to test and check zener diodes
of 3.3V to 18V rating. After proper calibration of the circuit, it
indicates the breakdown voltage of connected zener using Red LED as
indicator. Number of ICs used: None |
125 |
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<<<Back
Please add :
1.Rs 100/- for packaging and
forwarding charges. The item's will be dispatched by courier
anywhere in India.
2. 15% tax for the kit project for all others.
Kindly note:
1. These prices are effective from 1st October, 2007 but can be
changed without any notice.
2. Goods once sold will not be taken back. Dispute, if any, will be
settled in a Ahmedabad court only.
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