No 3mAOk so since my BJT will only be conducting 30ma C to E, are you saying I need 300ma on the base to fully switch ON my BJT?
they are comparatively faster than LDR, but you cant just modify the circuit for that, can we know How much reaction time you need to switch on the circuit ?One other question I had, If I replace the LDR with a photo transistor or by a photodiode (not sure which would be better), when the light form my LED hits whichever one, do they have a clean ON or are they just like the LDR and slowly start flowing current?
You should look at the datasheet for your photo transistor.Hey guys what kind of current can a photo transistors usually pass when they are fully on? Is it something tiny like 3ma or something more useful like 30ma?
Thats Ausioguru, I think I'll try your circuit as it seems simple enough.
Hey guys what kind of current can a photo transistors usually pass when they are fully on? Is it something tiny like 3ma or something more useful like 30ma?
The load is not another LED, instead it is an unknown "my circuit".Hi, Can we know what is your exact application, because you just making light coupling with LED and LDR and lighting another LED with it.
He said he already has an LED and this circuit is supposed to turn on his circuit when the LED turns on.I am asked about the OPs application. He is doing some light coupling, then why shdnt he use a optocoupler.
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