Infrared Fire-Cracker Igniter circuit


Posted on Feb 6, 2014

Firecrackers are normally ignited by using a matchstick or a candle. You have to run away quickly after igniting the fuse of the firecracker. This method of igniting firecracker is unsafe, because the danger of the firecracker bursting before you reach a safe distance is always there. The device described here uses remote control, usually used wit


Infrared Fire-Cracker Igniter circuit
Click here to download the full size of the above Circuit.

h TV receivers or CD players, to burst the fire-cracker. Thus the firecracker can be ignited from a safe distance using the circuit described below in conjunction with the remote control. In the diagram shown here, normally the output of IC1 is low and green LED2 is on` and the red LED3 off. ` This indicates that the circuit is ready for use. When any key on the remote control is pressed, output pin 3 of IRX1 (IR receiver module TSOP1738) goes low. This output is connected to pin 2 of IC1 via LED1 and resistor R4 to trigger the monostable operation of IC1. The output of IC1 remains high for a period equal to 1. 1G—R2G—C2. With the values of the components given in the circuit diagram here, the period works out to 3. 5 seconds approximately. This activates relay RL1 and red LED3 glows and green LED2 turns off. On` state of red LED3 indicates that the firecracker is about to burst. R7 is a small part of the element of an electric heater (220V, 1000W), which is kept away from the electronic circuit and connected to the relay contacts through a thick electric cable. The resistance value of short length of the heater element (R7) is 3 to 3. 5 ohms. A current of around 4 amperes flows through it when connected to a 12V battery. Flow of 4A current through R7 for 3. 5 seconds makes it red hot, which ignites the fire-cracker. The circuit is powered by a 12V, 7AH battery. IC2 provides about 9V for the operation of the circuit. The...




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Rain detector alarm
    Bi-directional motor control
    Audio Filter Analyzer
    Adopt the dialing demoder conceptual design of embedded DTMF of MSP430
    avr Piezoelectric Sensor and the ADC
    Interfacing TCS3200 Colour Sensor with AVR ATmega32
    Video Signal Amplifier
    Switch-Mode Power Supply
    20 MHz VHF CRYSTAL OSCILLATOR
    A SHORT WAVE REGENERATIVE RECEIVER
    Novel circuit diagram of the timer switch



    Top