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Detector and Sensor

Detector and Sensor

http://detector-sensor.blogspot.com/

Electronic Detector, Sensor, and Alarm: Circuit, Articles, and Related Links

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  • Fire Alarm Using NE555

    Posted on Friday October 9th, 2009 at 13:02 in alarm

    Here's a fire alarm circuit using LDR (Light Depending Resistor) as light sensor. It warns the user against fire accidents. It relies on the smoke that is produced in the event of a fire. When this smoke passes between a LED and an LDR, the amount of...

  • 2-Zone Alarm

    Posted on Friday October 9th, 2009 at 12:01 in alarm

    This is a really small alarm that could easily fit inside a pocket. However, I also demanded reliable operation, simple construction and very low power consumption. I started with CMOS logic gates, but was soon forced to abandon the concept after a f...

  • Rain Alarm using Water Sensor

    Posted on Monday September 21st, 2009 at 21:02 in alarm, sensor

    Rain alarm is a simple circuit using water sensor (transducer) that produces an audible alarm whenever rain falls. The circuit can be based on two transistors and or a NE555 IC. The two transistors are wired as a switch which goes on when the base ...

  • Lie Detector Circuit

    Posted on Sunday May 10th, 2009 at 13:00 in detector

    This detector circuit is for detecting a Lie. The lie detector circuit diagram consists of three transistors, a capacitor, two lights or LEDs, five resistors, and a variable resistor. This Lie Detector circuit is based on the fact that a person's sk...

  • Audio Detector Circuit

    Posted on Sunday May 10th, 2009 at 12:58 in detector

    This electronic detector circuit is to do audio detection. The circuit is for detecting one of those 3.6khz  (approx) beepers from Radio Shack. The component used is a single IC (LM324 quad op amp) and a handful of parts. Notes: The capacitor ...

  • Simple Home Alarm Circuit

    Posted on Sunday May 10th, 2009 at 12:58 in alarm

    Here's a simple home alarm circuit is for those who are eager to know the concept of home security system. It consists of three 555 timers gets the input from a contact that could be connected to a motion detector or any momentary contact that monito...

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This blog is currently rated a 5.00 out of a possible 5 based on 1 comment.

5 stars parking sensors

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Posted: May 29th, 2009 | Report This Comment

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