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    Touch Switch With Lamp DIY Experiments Science Project Model STEM KIT (Assembled), 100% Tested

    (19 customer reviews)

    Original price was: ₹1,025.00.Current price is: ₹599.00. + GST

      • Touch Switch with Lamp Complete assembled Kit, 100% Tested.
      • Includes full documentation, circuit diagrams, PCB layout, testing documents, and YouTube videos for easy understanding.
      • https://youtu.be/wgNBk1AAEa0?si=_03gIQmEBCwzM_8F
      • 100% support available on working days (11 AM – 6 PM) via email: smartxbrains@gmail.com.
      • Fastest delivery across India, perfect for various electronics projects.
      • Reliable and high-performance STEM KIT designed for educational and automation applications.

    100 in stock

    Touch Switch With Lamp
    This item: Touch Switch With Lamp DIY Experiments Science Project Model STEM KIT (Assembled), 100% Tested

    100 in stock

    1,025.00 599.00 + GST
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    Abstract:

    The Touch Switch with Lamp circuit is based on a readily available touch sensor, comparator IC LM393, and relay. The touch sensor acts as the touch detector, while the IC LM393 functions as a comparator. In the absence of touch, the touch sensor remains non-conductive, and the LED stays off. When touch is sensed, the touch sensor becomes conductive, and the LED glows.

    Application of the Circuit:
    Traditional touch sensor-based circuits often use costly and complex components. However, this Touch Switch with Lamp circuit leverages a readily available touch sensor, reducing cost and simplifying the circuitry. The circuit automatically activates the LED in the presence of touch, providing a continuous glow, signaling touch detection.

    Why This Circuit:
    The touch sensor is easily modifiable by simply touching it with a finger. Operating over a DC voltage of 5V (via a DC supply cable), this circuit is efficient and straightforward for various applications.

    Explained Working of the Circuit:
    The core idea is to turn ON the LED when a touch is detected. The touch sensor converts touch into electrical energy, while the IC LM393 functions as a comparator. The relay acts as a switch—normally closed contact becomes open, and normally open contact becomes closed. The LED remains off when no touch is detected but glows when touch is sensed.

    How to Build:
    Carefully study the manual, circuit, PCB layout, and components before soldering. Use color-coded resistors and ensure correct component placement, particularly paying attention to polarity-dependent components like diodes and electrolytic capacitors.

    Testing the Kit:
    After assembly, connect a 5V DC power source. Manually touch the sensor; the LED will glow if working correctly. Adjust the R2 variable resistor to set the desired light intensity.

    ICs Used:
    LM393 – A dual differential comparator IC, widely used and popular.

    Part List:

    • Semiconductors:
      U1 – LM393 (8-pin comparator)
    • Resistors:
      R2 – 10k Ohm (variable)
      R3 – 1k Ohm
      R4 – 1k Ohm
      R5 – 10k Ohm
      R6 – 10k Ohm
    • Capacitor:
      C1 – 1uF
    • Miscellaneous:
      D4 – Touch sensor
      D1 – Red LED
      D2 – Green LED
      5V USB Cable
      PCB
      LED
      Relay

    Key Applications:

    Used widely in electronic circuits, automation, robotics, and educational projects. Optimized for reliable performance in India-specific environments and conditions.

    Keywords:

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