Electronics

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Showing posts with label Doorbell-Cum-Visitor Indicator. Show all posts
Showing posts with label Doorbell-Cum-Visitor Indicator. Show all posts

Sunday, August 17, 2014

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  • Electric Shock Gun
    Electric Shock Gun
                            Electric Shock Gun This is a fantastic circuit for self-protection. In case a burglar intrudes your house, you c...
  • Precision 1HZ Clock
    Precision 1HZ Clock
    This precision 1Hz clock uses just two ICs and one junction field-effect transistor (JFET) in conjunction with a commonly available crystal...
  • Alarm using your own Voice
    Alarm using your own Voice
    Alarm using your own Voice This alarm plays your prerecorded voice message. It is built around the readily available quartz clock. Take ...
  • Doorbell-Cum-Visitor Indicator
    Doorbell-Cum-Visitor Indicator
    Doorbell-Cum-Visitor Indicator This doorbell circuit can also give identification of the visitor to your home in your absence. When you’...
  • Wireless Stepper Motor Controllers
    Wireless Stepper Motor Controllers
    Wireless Stepper Motor Controllers Here is a low-cost and simple wireless  stepper motor  controller using infrared signals. Using this c...
  • Mains Interruption Counter with Indicator
    Mains Interruption Counter with Indicator
          Mains Interruption Counter with Indicator This circuit counts mains supply interruptions (up to 9) and shows the number on a 7-seg...
  • LED-Based Reading Lamp
    LED-Based Reading Lamp
    LED-Based Reading Lamp This lamp circuit using ultra-bright white LEDs provides sufficient light for reading purposes while consuming ap...
  • MOTOR CONTROL THROUGH PWM
    MOTOR CONTROL THROUGH PWM
    MOTOR CONTROL THROUGH PWM   M otion control plays a vital role in industrial automation. It is required in manufacturing plants of indu...
  • Led Torch
    Led Torch
    Led Torch LEDs are becoming increasingly popular in many lighting applications. White LEDs are now common in torches. Here’s a simple an...
  • Fan on/off Control by Light
    Fan on/off Control by Light
    Fan on/off Control by Light This circuit lets you turn on/off a fan by just directing torchlight or other light toward its light-depende...

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