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How to Build a DIY LED Brightness and Efficiency Tester Circuit

Last Updated on February 17, 2018 by Admin 2 Comments

The submit details a very simple LDR brightness and effectiveness tester circuit establish utilizing an LDR and a digital Ohm meter.

LEDs are not particularly complicated light giving off devices when controlled with DC supplies and the illumination level turns into directly proportional to the current across the LED.

Consequently reading the brightness level under the above situation might not need advanced circuitry as we certainly have in lux meters, rather the reading could be simply received making use of an LDR and a cheap ohm meter.

The set up design of an LED brightness indicator might be observed below:

We observe an LDR enclosed inside a hollow opaque tube. The LED whose brightness ought to be calculated is embedded by means of the opposite hollow end of the tube such that both the devices are introduced face to face inside the tube.

A translucent white material such a roughened acrylic piece could possibly be released between the two device inside the pipe to be able to create the LED light diffuse over the LDR and generate an uniform distribution of light instead of obtaining concentrated over a small inconsistent area of the LDR.

With a DC used across the enclosed LED leads the demonstrated set up would certainly deliver a direct reading in the ohm meter showing the Ohms of the lowered LDR resistance.

This value could be mentioned and compared by other LEDs or a standard good quality LED in hand for getting the needed information regarding their brightness levels and performance.

 

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About Admin

Hey friends, Thanks a bunch for stopping by this site! I am an engineer with a Bachelor of Engineering in Electronics and Telecommunication. One of my passions is gathering information from all sorts of electronics books and tutorials. I then take that information and compile it into a language that is super easy to understand. My goal is to make those complex electronics circuit concepts and technical terms much more accessible for all the new and budding electronics engineers out there. I can also design customized circuit diagrams as required by the users.
If you have any questions related to this field, please do not hesitate to drop a comment! I am always here and ready to help you out with any queries you might have. I cannot wait to hear from you!

Reader Interactions

Comments

  1. Erik Andreassen says

    May 21, 2022 at 5:57 am

    Great circuit for matching LED brightness levels for illumination matching using different / same colour LEDS.

    Reply
    • admin says

      May 31, 2022 at 11:12 am

      Thanks for your valuable feedback, and glad you liked it!

      Reply

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