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I can't find a datasheet. Who made it?I'm not sure. I am not very good at finding such things. mr62-5fsry
I don't know. You changed the polarity of the B phototransistor from noninverting to inverting after I posted my schematic. Your new schematic should work, if you want to keep the new orientation of the B phototransistor.Hello again,
I am having a problem with the circuit you posted Roff.
in your circuit X = AB + |AC =1
shouldn't X = A|B = |AC = 1
like this:
I am not sure but something is still fishy about the circuit..
Thanks for the help.
Yes. Also, as I said before:If I switch B then I won't have to invert it right?
R1 and R2 should be around 10k. If you don't get solid "0" levels at B and C, change R3 and R4 to 10k, and R1 and R2 to 100k.
It looks good, but I can't guarantee it will work, because I don't understand how your lock sequence works.So this would be the best way? With 3vdc - 6vdc? And thanks again for your time.
Congratulations!The circuit works great.(using CD4013BE and CD4011BE for chips and all Q's are 2N2222's). Changing R1, R2, R3, R4 really helped my range on the light source. Thanks again.
I know a lot about voltage comparators.Do you know anthing about voltage comparitors? I would like a circuit to turn on when voltage is below 3vdc. I know I need a comparator and a zener diode, but which ones I am not sure, nor how to set it up? Any suggestions?