Outrageous said:Saturation current of bjt is a reference for us to adjust current of collector?
If we want to operate in active mode, then we have to adjust the current of collector to under saturation level?
Thank you
berkeman said:In the active region of operation, you are more limited in current, because you have a not-so-small voltage drop across the transistor, so the power dissipation is higher.
The saturation level of a BJT (bipolar junction transistor) refers to the state in which the transistor is fully turned on and is conducting the maximum amount of current it can handle.
The saturation level of a BJT is determined by the base-emitter voltage and the base current. When the base-emitter voltage is high enough and the base current is sufficient, the transistor will enter saturation.
When a BJT reaches saturation level, the collector-emitter voltage remains low and the transistor acts as a short circuit between those two terminals. This allows for maximum current to flow through the transistor.
The saturation level is important because it is the point at which a BJT can no longer increase its collector current. This means that the transistor cannot amplify the input signal any further and is operating at its maximum capacity.
The saturation level of a BJT can be controlled by adjusting the base-emitter voltage and/or the base current. By varying these parameters, the transistor can be brought into or out of saturation, allowing for control over the amount of current flowing through the transistor.