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Monday, 27 July 2015

Simple LDR Circuit Designed using ULN2803

by realfinetime  |  in uln2803 at  10:30

We all are familiar with light dependent resistor (LDR) which is widely used in many applications like cars, street lights etc. Many ways are there by which we can interface light dependent resistors. Here, we will see a simple circuit for interfacing light dependent resistors using ULN2803 chip. ULN2803 is a high voltage / high current darlington driver comprised of eight NPN darlington pairs.


Video demonstration of working of a light dependent resistor using ULN2803 is given below.
By making proper changes in circuit, we can reverse the working of circuit.

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All the circuits, published in this blog is only after testing and getting proper results in my private lab. When you try these circuits, you should check the supply voltage, polarity of components, presence of childrens nearby and shorts in the circuits. This website will not be responsible for any harm happened to you or your components caused by your carelessness.

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