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ldr led circuit
when im using a phototransistor.. i connect the supply of +5 to the collector, where do i place the base terminal?? is it gnd with emitter??
ldr circuits
@pakitos
i'm using the LDR coz its more faster than a phototransistor and it changes in resistance according to the color and irradiance.
if not LDR.. wht is tht u suggest??
Added after 4 minutes:
@betwixt
hey.. i did use it as a voltage divider. wen i measure the resistance...
light dependent resistor
hey i'm using a LDR in a colorimeter. as said earlier.. the resistance varies. here i need to interface it to a muC so.. how do i convert the ohm to voltage?? if i get it in terms of voltage then i can use a v to f .
if i measure the voltage across the LDR, its varing...
colorimeter with light filters
hey.. BABESH
actually here.. since the resistance changes according to the intensity of the light and also since here it is acting like a voltage divider.. so the voltage across the LDR remains constant.. or might vary in close proximity.... dont u tink so??
building a colorimeter
hey, i'm working on the concept of colorimeter.. for implementing a glucometer. but in this process i ve come across a problem. i'm using a LED and an LDR. i can now obtain the resistance across the LDR. how do i proceed further?? do i need to obtain the voltage across...
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