LDRs Preferably cadmium sulphide LDRs

  • Context: Undergrad 
  • Thread starter Thread starter BLUE_CHIP
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Discussion Overview

The discussion revolves around Cadmium Sulphide Light Dependent Resistors (LDRs), focusing on their internal structure, chemical properties, and the relationships between light intensity, light wavelength, and resistance. Participants seek resources and clarification on terminology related to LDRs.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant requests links on the internal structure and properties of cadmium sulphide LDRs, as well as their behavior in relation to light intensity and wavelength.
  • Another participant asks for clarification on what an LDR is, indicating a lack of familiarity with the term.
  • A participant explains that LDR stands for Cadmium Sulphide Light Dependent Resistor, suggesting it is an accepted abbreviation.
  • Some participants express uncertainty about the acronym "LDR," with one suggesting it may not be commonly recognized and questioning if it refers to photodiodes.
  • Another participant provides an equation related to the resistance of the cell in relation to light intensity, indicating a mathematical relationship.
  • One participant suggests using "photo diode" in search queries to find more relevant information.
  • A participant shares a link they found that may contain useful information about cadmium sulphide LDRs.

Areas of Agreement / Disagreement

There is no clear consensus on the terminology, as some participants are unfamiliar with the acronym "LDR." Multiple views exist regarding the recognition and understanding of the term, leading to some confusion in the discussion.

Contextual Notes

Participants have not reached a resolution on the commonality of the term "LDR," and there may be assumptions about the audience's familiarity with the terminology. The mathematical relationship provided is not fully explored or verified.

BLUE_CHIP
It would be really helpfull if you could give me a few links on LDRs

Preferably cadmium sulphide LDRs.

I'm looking for the internal structure, chemical properties of cdS, and relationships between light intensity and resistance and if possible, light wavelength and resistance.

I've been looking for a while but can't find anything.

thank you
 
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Whats an LDR?
 
Sorry, I didn't clarify.

A Cadmium Sulphide Light dependent Resistor (LDR)

I thought that it was an accepted abbreviation.
 
I have never heard or seen that acronym, are these photo diodes? Perhaps your difficulty in finding information is because LDR in not a common term. (Just guessing) :wink:
 
An "LDR" is a photoconductive cell for which the equation:

[tex]lnR=(ln[lux])^{-1}[/tex]

applies, where R = Resistance of cell
lux = intensity of light falling on cell
 
Try including photo diode in your search string instead of LDR. I had some interesting hits with that.
 
Here's one link I found: www.electrovalue.co.uk/pdf/o-p.pdf[/URL]

THere are others. I used these search words in Google: Cadmium Sulphide Light dependent Resistor
 
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