What is base emitter resistance?

In BJT (bipolar junction transistor) there is a junction between N type material”base”and P type material”emitter”so when there is no voltage applied there will be a diffusion current between N and P type materials and electric field will appear so there will be a resistance between base and emitter it is the base …

What is the internal emitter resistance of a transistor?

The internal emitter resistance is the resistance in the emitter circuit contained within the transistor package. This internal resistance rEE is significant when the (external) emitter resistor RE is small, or even zero. The value of internal resistance REE is a function of emitter current IE, Table below.

What is the resistance of the base emitter junction of a transistor?

So if your base current is 2.5uA (say the beta is 300 and the transistor is biased with 0.75mA collector current), the base-emitter junction looks like about a 10K resistor for small signals.

What is FT of a BJT?

ft The ft of a BJT is the frequency at which the current gain, with a short circuit (at HF) output, is unity.

What is the difference between base and emitter resistance?

The reason for this is the actual resistance as seen between base and emitter is dynamic and changes with DC bias and transistor gain: RB is the total extrinsic resistance connected to the base excluding a source Thevinen

What is base emitter resistance in a BJT transistor?

In BJT (bipolar junction transistor) there is a junction between N type material”base”and P type material”emitter”so when there is no voltage applied there will be a diffusion current between N and P type materials and electric field will appear so there will be a resistance between base and emitter it is the base emitter resistance.

How can I tell if two resistors have the same voltage?

Measure the voltage across EACH of the two resistors. If they are both approximately 0.3V (i.e., 1V minus a 0.7V diode drop), then you guessed correctly. The emitter follows behind the base by 0.7V, and the current through the emitter matches the current through the collector, and so both resistors carry the same voltage drop.

What is the difference between a resistor and a transistor?

Basically the function of a resistor is always to oppose the flow of current through it and the strength of this opposition is termed as its resistance. A transistor basically needs a small base voltage (>0.6) to make a large voltage flow through its collector/ emitter terminals.