How to bias a photo-transistor (the resistance in the collector) given that:
Vcc = 5v Vce(sat) = 0.4v Ic(on): min: 0.2 - 1.6 max: 0.6 - 2.4
I'm using LTR-301 photo-transistor. I want to use it in the Active mode, to get the heart pulses and what about Vce, if it's low, (it's supposed to saturate the photo-transistor, I don't want that to happen) I need the range of values of Vce to calculate the thresholed in the Comparator (to convert the signal into a pulse train)
Do I need amplification if Vce is big enough?