M Megha b New Member Mar 12, 2019 #1 Hi, How to find the intensity range of phototransistor is working?? is there any parameter to check phototransistor is working at what intensity of light?? please help me to resolve this.....
Hi, How to find the intensity range of phototransistor is working?? is there any parameter to check phototransistor is working at what intensity of light?? please help me to resolve this.....
alec_t Well-Known Member Most Helpful Member Mar 12, 2019 #2 The datasheet for the particular photo-transistor you have should indicate the response to light level.
The datasheet for the particular photo-transistor you have should indicate the response to light level.
crutschow Well-Known Member Most Helpful Member Mar 12, 2019 #3 If you want to measure its sensitivity, then connect the transistor collector to a voltage supply (e.g. +5V with emitter to ground) in series with a milliammeter, and measure the current versus light intensity.
If you want to measure its sensitivity, then connect the transistor collector to a voltage supply (e.g. +5V with emitter to ground) in series with a milliammeter, and measure the current versus light intensity.