Photo(transistor, resistor. diode) ?

[Suds]

Hi

I am doing a design of a traffic light controller and wanted to find out which of these: photo(transistor, resistor,diode) will best suit the function of detecting day so that the timing can switch to another control circuit. I am guessing that it's the transistor but any insight would be appreciated.

Thanks

 

[ericgibbs]

hi
This thread is running a similar question.

Phototransistor vs Photodiode

 

[Sceadwian]

Pssst... Eric, it's customary to actually provide a link when you're refrencing one =)

 

[Hero999]

Alright, if no one else was going to do it I might as well do it.
https://www.electro-tech-online.com...s-photodiode.28554/?highlight=phototransistor

 

[Suds]

Alright, if no one else was going to do it I might as well do it.
https://www.electro-tech-online.com...s-photodiode.28554/?highlight=phototransistor

thanks! thanks! thanks! thanks! thanks! thanks! thanks! thanks! thanks! thanks!