DIYstompboxes.com

DIY Stompboxes => Building your own stompbox => Topic started by: Joncaster on May 26, 2018, 07:07:35 AM

Title: Understanding LDR specs and Lux info
Post by: Joncaster on May 26, 2018, 07:07:35 AM
Hey guys,

So I was looking through the catalog for LDR's from a local supplier, and want to know a bit more about how to interpret these things.
Just for a bit of knowledge gain, really.

http://www.mantech.co.za/Datasheets/Products/MLGXXXX.pdf

Thanks!


Edit: sorry, found the info at the top of the flipping datasheet!

The whole Log(R10/R100) thing doesnt make much sense yet.
10 and 100 lux seem very dim for testing a 'light' resistance.
Title: Re: Understanding LDR specs and Lux info
Post by: PRR on May 26, 2018, 12:28:34 PM
They are thinking night-lights, dusk-to-dawn lamp controllers.

At 10 Lux you can hardly walk around. 100 Lux is more like a living room in the evening. Somewhere in there, you want to turn-on some light. Their 400-600 Lux pre-condition is a good bright workbench light; but also the very-late-afternoon sunshine typically soaking the lamp controller before it needs to come on.

All normal artificial sources are FAR short of noonday sun, ~~50,000 Lux.