This may be a stupid question but here goes, What is the smallest current required on a micro pic input pin for it to work. say i was using a 16f876a and had a 5v input from a transistor onto rb1, how much current would the pic be drawing on that pin??
The reason i ask is because iv been reading up on transistors and i have a few ideas on a circuit i would like to make, it would mean using a transistor in a common emitter format and from what i can see i need to no Ic current required to work out what resistors to set the bias ect.
Am i right in thinking that Rc resistor would also control the current on the output of the transistor
sorry if this is a stupid one but i had to ask.
jason
The reason i ask is because iv been reading up on transistors and i have a few ideas on a circuit i would like to make, it would mean using a transistor in a common emitter format and from what i can see i need to no Ic current required to work out what resistors to set the bias ect.
Am i right in thinking that Rc resistor would also control the current on the output of the transistor
sorry if this is a stupid one but i had to ask.
jason