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NEED A HELP TO CONTROL OUTDOOR LAMP ON/OFF USING LDR?

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emb

Member
Hi

i need to control the outdoor lamps using ldr without using controller.

i need to use triac instead a relay :)

how can i do that ?

Regards
 

alec_t

Well-Known Member
Most Helpful Member
Is this a school/college project?
 

audioguru

Well-Known Member
Most Helpful Member
Old solar garden lights used an LDR but they got sunburned after 2 years outside. New solar garden lights use the glass-covered solar panel to detect light and dark. Old solar panels with a plastic cover also got sunburned and failed after a couple of years.
 

emb

Member
Old solar garden lights used an LDR but they got sunburned after 2 years outside. New solar garden lights use the glass-covered solar panel to detect light and dark. Old solar panels with a plastic cover also got sunburned and failed after a couple of years.
thank you :)

I need to build the circuit for education purposes :)

I train a group of electrical technicians in the field of home electrical wiring.

I want to build the circuit because its components are available to me :)

regards
 

Externet

Active Member
...i dont need a ready made one ...
Fine, buy one as pictured in post #4 ; dismantle it to pieces. Now you have ALL the parts to build one to train all your technicians explaining how to build one...
 

Triode

Active Member
Have you tried a web search for "photoresistor relay circuit"

Here is one of the ones that comes up right away when I do that



I just noticed you said Triac, just a second...

I also get a lot of results with "photoresistor triac circuit" I picked one that has specific component numbers. If some components are hard to get where you live, there are at least 50 results you could browse to find one that suits you.

 
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