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photoresistor Answered

hey!!i started working on a project based on ldr and i realised dc motor and ldrs don't work together so before i buy ac motors i wanted to ask that will it work??thanks in advance.

Tags:acmotor

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robo10302 (author)2013-05-22

thanks for the reply.i want to turn motor on and off.can you please provide me with the schematic.

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verence (author)2013-05-22

If you think about something like

DC+ -- LDR -- motor -- DC-

That wont work. The LDR is not made to handle the high
currents a motor will need. Doesn't matter if you switch to AC.

You'll need some kind of driver stage. At least a transistor or
even an operational amplifier.

What do want to do? Just switch the motor on and off or
do you want a kind of linear speed control?

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robo10302 (author)2013-05-22

hey CAITLINSDAD thankyou for the reply.i'm getting about 4-4.5v.and no its a very simple circuit.I'm not using a microcontroller.

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caitlinsdad (author)2013-05-21

How much output are you getting from the photoresistor? Are you using it with a microprocessor?

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