Question about Transistors

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hi,
i'm making ir sensor obstacle sensor based on ir micromouse robot ..
the circuit based on connecting ir led on transistor , receiver connecting ( vcc ,resistor + signal output , gnd )
then can pulse ir using pwm on transistor calculate reading when transistor off after calculating reading when transistor on , subtracting 2 readings real sensor reading accurately .. question here what's best transistor purpose ??
thanks alot .

quote from: davy_jonez on aug 02, 2016, 01:47 am
hi,
i'm making ir sensor obstacle sensor based on ir micromouse robot ..
the circuit based on connecting ir led on transistor , receiver connecting ( vcc ,resistor + signal output , gnd )
then can pulse ir using pwm on transistor calculate reading when transistor off after calculating reading when transistor on , subtracting 2 readings real sensor reading accurately .. question here what's best transistor purpose ??
thanks alot .

you need slow down, stop writing run-on sentences, , tell what's going on.


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