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Part of Made in India,Design Innovation
Workshop,2015
A Fresh New Experience in
Project-‐Making and Learning
PHYSICS INVESTIGATORY PROJECT ON
OR GATE USING DIODES
You must have seen two switches to ac?vate the same doorbell, whether you push the switch at the front door or the one at the garage, the doorbell will ring. Have you ever thought how and why this happens? The 2-‐input (A and B) OR gate using diodes will help you understand this mechanism, it has two inputs and only one output (Q).
In this project, you will make an OR gate logic circuit using two diodes, a resistor, an LED and a few connec?ng wires. Two connec?ng wires are connected to the p-‐sides of the diodes. Each connec?ng wire represents the input. This input could be either 1 or 0, where 1 stands for Vcc (posi?ve/high voltage) and 0 stands for ground (nega?ve/low voltage).
To provide the respec?ve inputs, the truth table of OR gate is followed.
Input A Input B Output Q0 0 00 1 11 0 11 1 1
On providing the inputs, if the LED glows this means output Q = 1 or high. If the LED does not glow, the output Q = 0 or low. AWer verifying the experimental outputs in four different cases of the inputs, we do the ‘path of current’ analysis and reason out why the LED glows in each case.
Have a look at our Project Kit!
CoolJunk is India's fastest growing DIY (do-‐it-‐yourself) kits company focused on project-‐based learning in science, engineering and technology. Having 20,000 users in India, US, Singapore, Middle East and New Zealand, the CoolJunk kits are known for quality, innova?on and high produc?on value. CoolJunk has been featured in na?onal and interna?onal journals including Wallstreet, Yourstory, Hindu Business Line, NextBigWhat and was tagged as the coolest Indian start-‐up in IAN Bootcamp-‐2011.
You may also refer to the video: OR GATEFor more projects visit our website: CoolJunk
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