Part of Made in India,Design Innovation
Workshop,2015
A Fresh New Experience in
Project-‐Making and Learning
PHYSICS INVESTIGATORY PROJECT ON
NAND GATE USING DIODES
Do you know how the industrial boilers work? The boiler circuit will acBvate a warning lamp if either its water sensor or its gas sensor detects a low level. The NAND gates will help you infer its working; it has two inputs (A and B) and only one output (Q).
In this project, you will make a NAND gate logic circuit using two diodes, three resistors, an LED and a few connecBng wires. Contrary to the NOR-‐gate, in this case the p-‐sides of the two diodes are connected to each other and at the same potenBal. Two connecBng wires are connected to the n-‐sides of the diodes. Each connecBng wire represents the input. This input could be either 1 or 0, where 1 stands for Vcc (posiBve/high voltage) and 0 stands for ground (negaBve/low voltage).
To provide the inputs; the truth table of the NAND-‐gate was followed.
Input A Input B Output Q0 0 10 1 11 0 11 1 0
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. AVer 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, innovaBon and high producBon value. CoolJunk has been featured in naBonal and internaBonal 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: NAND GATEFor more projects visit our website: CoolJunk
Tools and Components in one box.
Step by step visual instrucBons
Detailed experiment theory
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