I understand to a point how they work. I saw many amazing tutorials on youtube. First question,... basic difference between NPN and PNP is that you need a current source to close the NPN and a ground or no current to close a pnp to allow to allow a current to flow right? So if NPN has no current at the gate current will not flow where in the same scenario a PNP will flow current?
Also, of the 3 modes; open/ closed(switch); triode(variable resistor); and saturation-- I dont understand saturation. I mean I do but I dont. I know that if the voltage from the drain to the source is greater than the overdrive voltage the transistor will be in saturation mode where it acts as an amplifier. What is being amplified?!?! the voltage from the gate to the source?
Thanks.
Also, of the 3 modes; open/ closed(switch); triode(variable resistor); and saturation-- I dont understand saturation. I mean I do but I dont. I know that if the voltage from the drain to the source is greater than the overdrive voltage the transistor will be in saturation mode where it acts as an amplifier. What is being amplified?!?! the voltage from the gate to the source?
Thanks.