what is an LDR

[{ antonio }]

i wanted to know if you all could help me.  what is an LDR?  what does it do?  what does LDR stand for?

i had seen them in a couple of schematics recently and i wanted to know what they were used for.

thanks so much.
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[MartyB]

Light-Dependant Resistor.  These can be used in combilation with LEDs or standard incandescent bulbs to provide an isolated variable resistance, such as in phase shifters.  There are alot of commercially-available components that have a pre-assembled LED and LDR in a package called an optoisolator or optocoupler.  Alot of diyers will jus use a LED/LDR pair  - usually cheaper  '8)"

[Peter Snowberg]

Here is what a typical unit looks like...



Take care,
-Peter

[zener]

It is a resistor which resistance varies depending from how much ( or how bright) light it receives. LDRs I have encountered are MORE LIGHT=LESS RESISTANCE.

Compressors and wah (Morley) are just two effects where you can usuallly find it.

[RDV]

Wasn't LDR one of the presidents?

:wink:  :wink:  :wink:  :wink:  :wink:  :wink:  :wink:  :wink:

RDV

[Lonehdrider]

Yeah, Larry D. Roosevelt...

Regards,

Lone

[StephenGiles]

Have you not heard of the Church of Latter Day Resistors!

[puretube]

is it possible to use a GWB in a LoFi pedal?   :cry:

[Hal]

HAHA

its the new LoDow pedal  

[{ antonio }]

so does that mean they are the same thing as photo resistors?

[Hal]

yup!