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Home » Products & Services » Do-it-your-self Projects

Do-it-your-self Projects

 We have varity of hobby electronics projects for students & engineers .Electronics kit are supplied with set of components , PCB board & work instruection . All the projects are tested verified design.
Useful for students & engineers to understand the conceots & feel the electronics .

 

Do-it-your-self Projects



Sunset Lamp Kit

Sunset Lamp Kit
Approx. Price: Rs 250 / Piece

Item Code: BE10054

The circuit uses popular timer IC NE555 as a Schmitt trigger to give the bistable action. The set and reset functions of the comparators within the NE555 are used to give the instantaneous action. The upper threshold comparator of IC1 trips at 2/3Vcc, while the lower trigger comparator trips at 1/3Vcc.The inputs of both the threshold and the trigger of NE555 are tied together and connected to the voltage divider formed by LDR1 and
VR1. The voltage across LDR1 depends on the light intensity.
In daylight, LDR1 has low resistance and the input voltage to the threshold comparator goes above 2/3Vcc and its output becomes zero, and the lamp remains off.
At sunset, the resistance of LDR1 increases, and the voltage at the input of the threshold comparator decreases below 2/3Vcc and that of the trigger comparator goes below 1/3Vcc. As a result, the outputs of threshold and trigger comparators go high. Thus it completes the power supply to the lamp through triac1. LED1 glows to indicate the high output state.

    Other Information

    • Minimum Order Quantity: 1 Piece




    Cash Box Guard

    Item Code: BE10053

    Most thefts happen after midnight when people enter the second phase of sleep called‘paradoxical sleep.’ Here is a smart security circuit for your cash box that  thwarts the theft attempt by activating an emergency beeper. The circuit can also be used to trigger any externalburglar alarm unit.

    The cash box guard is built with IC4060 .

    Other Information

    • Minimum Order Quantity: 1 Piece(s)


    Cash Box Guard
    Approx. Price: Rs 225 / Piece(s)



    Smart Emergency Light

    Smart Emergency Light
    Approx. Price: Rs 250 / Piece

    Item Code: BE10052

    Now you need not fear dark nights when power breaks down. Here’s a white LED based emergency light that automatically turns on when mains power supply fails. The circuit consists of power supply, battery charger and switching sections.

     

      Other Information

      • Minimum Order Quantity: 1 Piece




      Simple Code Lock

      Item Code: BE10043

      The circuit described here is of an electronic combination lock for daily use. It responds only to the right sequence of four digits that are keyed in remotely.

      The circuit uses IC4013.
      Operating voltage - 12V DC

      Other Information

      • Minimum Order Quantity: 1 Piece(s)


      Simple Code Lock
      Approx. Price: Rs 225 / Piece(s)



      Touch Sensitive Switch

      Touch Sensitive Switch
      Approx. Price: Rs 175 / Piece

      Item Code: BE10048

      Things which you will learn:

      *Use to transistor for switching applications.

      *Use of SPDT relay switches to operate appliances.    

      Product Description

      Build a Touch Sensitive Switch and change the way you switch on/off your home appliances.
      Now with this circuit no more mechanical switching is needed. Just touch and Whoop the Appliance is ON!

      Working:
      The Touch Sensitive Switch makes use of 50Hz hum present in the human body.

        Other Information

        • Minimum Order Quantity: 1 Piece




        Magic Eye

        Item Code: BE10034

        The Magic Eye is a versatile electronic eye that can be used for a variety of applications like a burglar alarm, smoke detector or an automatic guest indicator. All these applications make use of the Light Dependent Resistor (LDR) which is installed and implemented differently in each case. Number of ICs used: 1.

        CIRCUIT USES IC 555 

          Other Information

          • Minimum Order Quantity: 1 Piece(s)


          Magic Eye
          Approx. Price: Rs 125 / Piece(s)



          Low Cost Transistorized Intercom

          Low Cost Transistorized Intercom
          Approx. Price: Rs 200 / Piece

          Item Code: BE10033

          Specifications:

          • Dimensions: 58*105*38 mm
          • Storage Channel: 128

          Other Information

          • Minimum Order Quantity: 1 Piece




          IR Object Counter

          Item Code: BE10031

          Specifications:

          • Input sensitivity: 25 nVram (-20 dBm)
          • Max. input level: 1 Vrms (+13dBm)
          • Damage level: 3 Vram (+23dBm)

          Other Information

          • Minimum Order Quantity: 1 Piece


          IR Object Counter
          Approx. Price: Rs 325 / Piece



          Digital Dice

          Digital Dice
          Approx. Price: Rs 200 / Piece

          Item Code: BE10025

          Specifications:

          • Forward Voltage: 1.9-2.3 V
          • Operating temperature: 35- 85
          • Luminous Intensity: 50-70 Mcd

          Other Information

          • Minimum Order Quantity: 1 Piece




          Electronic Bicycle Lock

          Item Code: BE10024

          Specifications:

          • Static Current: ≤15 uA
          • Weight: 2 KG
          • Alarm sound: 117 dB

          Other Information

          • Minimum Order Quantity: 1 Piece


          Electronic Bicycle Lock
          Approx. Price: Rs 200 / Piece



          Burglar Alarm System

          Burglar Alarm System
          Approx. Price: Rs 125 / Piece

          Item Code: BE10022

          Specifications:

          • Dimension/CM: 25.5*28.5*7 cm
          • Radio Frequency: 433 MHz, encrypted

          Other Information

          • Minimum Order Quantity: 1 Piece




          Secured Room Access System

          Item Code: BE10057

          Specifications:

          • Applicable Temperature: 20-50
          • Power Support: 4AA alkaline batteries

          Other Information

          • Minimum Order Quantity: 1 Piece


          Secured Room Access System
          Approx. Price: Rs 1,400 / Piece



          Power Supply Digital Counter

          Power Supply Digital Counter
          Approx. Price: Rs 300 / Piece

          Item Code: BE10060

          Specifications:

          • Size: W 72 X H72 mm
          • Power Supply: 90-250 VAC 50/60 HZ

          Other Information

          • Minimum Order Quantity: 1 Piece




          Power Supply Failure Alarm

          Item Code: BE10020

          Specifications:

          • Anode of output power supply: +12 V
          • Dimension: 88 x 60 x 25 mm

          Other Information

          • Minimum Order Quantity: 1 Piece


          Power Supply Failure Alarm
          Approx. Price: Rs 225 / Piece



          LED Running Light Circuit

          LED Running Light Circuit
          Approx. Price: Rs 150 / Piece

          Item Code: BE10001

          Specifications:

          • Input Voltage(V): 12 V
          • Working Temperature: 200 - 600 C 
          • CRI (Ra>): 85

          Other Information

          • Minimum Order Quantity: 1 Piece




          Bit Code Lock for Appliance Switching

          Item Code: BE10016

          Specifications:

          •  Operating Temperature: 30+70
          •  Transmitting Frequency: 315 MHz/433 MHz
          •  Remote Control Distance: 100 m/300 ft (theoretically)

          Other Information

          • Minimum Order Quantity: 1 Piece


          Bit Code Lock for Appliance Switching
          Approx. Price: Rs 300 / Piece



          Door Guard

          Door Guard
          Approx. Price: Rs 205 / Piece

          Item Code: BE10010

          Specifications:

          • Size: L37.5 X W 38.5 X H 27 CM
          • Weight: 0.06 kg

          Other Information

          • Minimum Order Quantity: 1 Piece




          Remote Control Circuit

          Item Code: BE10006

          Specifications:

          • Min. Hole Size: 0.1 mm
          • Min. Line Width: 3 Mil
          • Min. Line Spacing: 3 Mil

          Other Information

          • Minimum Order Quantity: 1 Piece


          Remote Control Circuit
          Approx. Price: Rs 300 / Piece



          Automatic Night Lamp Dimmer

          Automatic Night Lamp Dimmer
          Approx. Price: Rs 200 / Piece

          Item Code: BE10066

          Specifications:

          • Lamp Luminous Flux(LM): 350 LM
          • Working Temperature: 20-50oC
          • Input Voltage(V): 220 V

          Other Information

          • Minimum Order Quantity: 1 Piece




          Long Range FM Transmitter

          Item Code: BE10082

          Specifications:

          •  Frequency: 88.1-107.9 MHZ
          •  Separation: ≥60 DB
          •  Operating Voltage: 4.2 V 130 MV

          Other Information

          • Minimum Order Quantity: 1 Piece


          Long Range FM Transmitter
          Approx. Price: Rs 350 / Piece



          Smart Cellphone Holder

          Smart Cellphone Holder
          Approx. Price: Rs 250 / Piece(s)

          Item Code: BE10044

          This smart cellphone holder makes sure that you don’t forget to carry your mobile phone. Fitted in the car, it keeps searching for the mobile phone within the holder using infrared (IR) rays and alerts you through a flashing LED when it doesn’t find one.

          Things Which you will learn:

          *Application of the LM555 timer IC.
          *Application of the 2N5777 phototransistor.
          *Application of transistors for switching purposes.

          Other Information

          • Minimum Order Quantity: 1 Piece(s)




          Musical Touch Bell

          Item Code: BE10002

          We are engaged in offering Musical Door Bells, these musical door bells are available in different tunes for our valuable clients to meet the demands of clients. These musical bells are made of higher quality bronze alloys.

          Specifications:

                                                         
          • Power Output: 18 V
          • Resolution: 420 TVL
          • Temperature: 20-70 °C  

          Other Information

          • Minimum Order Quantity: 1 Piece


          Musical Touch Bell
          Approx. Price: Rs 125 / Piece



          Anti Bag Snatching Alarm

          Anti Bag Snatching Alarm
          Approx. Price: Rs 275 / Piece

          Item Code: BE10017

          Specifications:

          • Frequency: 433 Mhz
          • Distance: 0-25 m

          Other Information

          • Minimum Order Quantity: 1 Piece




          Automatic Bell

          Item Code: BE10018

          Specifications:

          • Supply Voltage: 3.0-4.5 V
          • Forward Voltage: 10-28 MV
          • Weight: 219.8 Gm

          Other Information

          • Minimum Order Quantity: 1 Piece


          Automatic Bell
          Approx. Price: Rs 225 / Piece



          Low Battery Indicator Kit

          Low Battery Indicator Kit
          Approx. Price: Rs 200 / Piece

          Item Code: BE10019

          Specifications:

          • Variable Voltage: 2.8-4.2 V
          • Battery Capacity: 650/900/1100 Mah

          Other Information

          • Minimum Order Quantity: 1 Piece




          Smoke Detector Alarm

          Item Code: BE10005

          Specifications:

          • Alarm Current:  <10mA
          • Alarm Volume: >85DB
          • Working Temperature: -10 °C + 50 °C
          • Working Humidity: ≤95 % (40±2 °C)

          Other Information

          • Minimum Order Quantity: 1 Piece


          Smoke Detector Alarm
          Approx. Price: Rs 200 / Piece



          Fire Alarm System

          Fire Alarm System
          Approx. Price: Rs 125 / Piece

          Item Code: BE10029

          We are manufacture and exporter of Fire Alarm Systems, a higher grade raw material used in this alarm. The fire alarm systems sense if there are any dust or smoke in environment and ring. We offer it on market leading prices.

          Specifications:


          • Wireless frequency: 315 MHz/433 MHz
          • Power Requirements: AC 220V 50Hz/60 Hz
          • GSM Frequency: 900/1800 MHz (standard)

          Other Information

          • Minimum Order Quantity: 1 Piece




          Knock Alarm

          Item Code: BE10032

          Specifications:

          • Defence Rate:  <1%
          • Voltage: DC 12V

          Other Information

          • Minimum Order Quantity: 1 Piece


          Knock Alarm
          Approx. Price: Rs 150 / Piece



          Multiswitch Door Bell With Indicator

          Multiswitch Door Bell With Indicator
          Approx. Price: Rs 275 / Piece

          Item Code: BE10035

          Here’s the circuit of a multi-switch input musical doorbell (shown in Fig.1). The circuit is built around the popular and less expensive quad D-latch CD4042B (IC1).

            Other Information

            • Minimum Order Quantity: 1 Piece




            Musical Door Bell

            Item Code: BE10037

            Here is a musical call bell that can be operated by just bridging the gap between the touchplateswith one’s fingertips. Thus there is no need for a mechanical ‘on’/‘off’ switch because the touch-plates act as a switch. Other features include low cost and low power consumption. The bellcan work on 1.5V or 3V, using one or two pencil cells, and can be used in homes and offices.Two transistors

            The circuit uses ICUM66. 

              Other Information

              • Minimum Order Quantity: 1 Piece


              Musical Door Bell
              Approx. Price: Rs 125 / Piece



              Musical Hold On For Telephone Kit

              Musical Hold On For Telephone Kit
              Approx. Price: Rs 125 / Piece

              Item Code: BE10038

              Specifications:

              • Power: 210-500 W
              • Operating Range: 300 meters

              Other Information

              • Minimum Order Quantity: 1 Piece




              Parallel Telephone Ringer

              Item Code: BE10039

              Product Description

              The Parallel Telephone Ringer serves as an external telephone ringer connected in parallel to an existing telephone instrument.

              Summary

              A simple circuit based on the ring generator IC BEL1240 to indicate the ringing of the phone in another room where the telephone is not present. The Parallel Telephone Ringer provides indication of a telephone ringing in another room and cannot be heard otherwise. No. of ICs used: 1

               Things you will learn:

              *Application of the ring generator IC BEL1240

              *Concepts and implementation of RC Circuits

              Other Information

              • Minimum Order Quantity: 1 Piece


              Parallel Telephone Ringer
              Approx. Price: Rs 150 / Piece



              PC Based Timer

              PC Based Timer
              Approx. Price: Rs 225 / Piece

              Item Code: BE10040

              Timers are very useful both for industrial applications and household appliances. Here isa PC-based timer that can be used for controlling the appliances for up to 18 hours. For control, the timer uses a simple program and interface circuit. It is very cost-effective and efficient for those who have a PC at workplace or home. The tolerance is ±1 second.

              Other Information

              • Minimum Order Quantity: 1 Piece




              Power Failure Indicator

              Item Code: BE10041

              Product Description

              A simple power failure detection using the property of Resistance dependent on the light .Build this and get informed about power failure or blown fuses

              Working:
              The heart of the Power Failure Indicator is a Light Dependent Resistor (LDR) whose resistance is inversely proportional to the intensity of light falling on it. In the circuit, a zero-watt bulb is connected to the 230V AC mains and is placed in the vicinity of the LDR. When the bulb is glowing i.e. the AC supply is ON, the LDR offers a high resistance and the input to the active-low Reset Pin (Pin4) remains LOW. This causes the output (at Pin3) of the NE555 to go LOW and the loudspeaker remains OFF. When the bulb goes OFF i.e. the AC supply has failed, the resistance offered by the LDR decreases and the reset pin of the NE555 gets disabled. The output of the multi-vibrator goes high and the loudspeaker sounds an alarm, thereby indicating that the fuse is blown or the AC supply has failed.

              Things which you will learn:
              *Application of LDR as a sensor.
              *Application of the NE555 in the astable mode of operation. 

              Other Information

              • Minimum Order Quantity: 1 Piece(s)


              Power Failure Indicator
              Approx. Price: Rs 200 / Piece(s)



              Wireless TV Headphone

              Wireless TV Headphone
              Approx. Price: Rs 175 / Piece

              Item Code: BE10050A

              This circuit allows you to watch your favourite TV programmes late at night without disturbing other familymembers

              Other Information

              • Minimum Order Quantity: 1 Piece




              Traffic Signal

              Item Code: BE10127

              This is a simple circuit to build a traffic signal using an IC 555 - Timer and IC CD4017 – Decade Counter. In a Traffic light there are three different color LED which are Green (Go), Yellow (Caution) and Red (Stop). Here IC 555 is used in Astable Multivibrator Mode. The timing of signal can be adjusted by varying potentiometer.

              Other Information

              • Minimum Order Quantity: 1 Piece
              • Port of Dispatch: coimbatore


              Traffic Signal
              Approx. Price: Rs 200 / Piece



              Fire Alarm(PT) Interface Module

              Fire Alarm(PT) Interface Module
              Approx. Price: Rs 200 / Piece(s)

              Item Code: BE10130

              This is an easy to use fire alarm. The circuit uses an NTC as a temperature sensor. As this temperature around NTC increases its resistance decreases. A potentiometer is used to provide a reference voltage. As the temperature around NTC increases, a voltage drop occurs which drives a transistor in turn activating the buzzer & glowing the LED.




              E-Candle(PT)

              Item Code: BE10128

              This is a simple circuit to build a Electronic Candle using a transistor and condenser mic. A condenser mic is used to sense puff. An E-Candle simulates a candle lit. To light the candle you have to press a button and to blow it off you have to puff over the mic

              Other Information

              • Minimum Order Quantity: 1 Piece


              E-Candle(PT)
              Approx. Price: Rs 200 / Piece



               



              Bharathi Electronics
              M. Thyagarajan (Proprietor)
              No. 4/5 A, Union Road, Opposite Mahindra First Choice Service Centre, Kavundampalayam
              Coimbatore - 641030, Tamil Nadu, India

              Contact via E-mail

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