help in phototransistor

[1111]

hellow allllllll,

is the one can help me please

im doing my project using photo transistor with IR ,2 meter apart from each other. this is my problems::

1- what is the output is it AC or DC (EMMETTR VOLTAGE )
2- What is the equations used for photo transistor is it like the normal one or other than those.
3- what is the maximum voltages and currents that IR can take and give??

please help me if have interest in this fields.....

 

[Optikon]

hellow allllllll,

is the one can help me please

im doing my project using photo transistor with IR ,2 meter apart from each other. this is my problems::

1- what is the output is it AC or DC (EMMETTR VOLTAGE )
2- What is the equations used for photo transistor is it like the normal one or other than those.
3- what is the maximum voltages and currents that IR can take and give??

please help me if have interest in this fields.....

1) It is likely DC connected. i.e. not capacitive output coupling.. but your signal can be AC or DC depending on how it is driven. Remember, its a transistor!

2) Look at datasheet for relation ships between incident light / power to base current and/or gain..

3) Look at datasheet. MOst of this info is in there.. you have looked right? whats the part number?

Note, 2 meters apart might be tough, you will have a pretty small signal and how will you handle ambient IR?