What is the input of BJT?
Solution: In a Common Emitter configuration of a Junction Transistor, the emitter is the common terminal. Input is between the base and emitter. The output is between the collector and emitter. Input characteristics are the variation of base current (IB) with the base-emitter voltage (VBE).
What is output resistance in BJT?
Up until now in this course we have assumed that the collector of a BJT acts like an ideal current source when the transistor is operating in forward active mode. When a current source is ideal, its output resistance is infinity.) …
What is input and output resistance?
The output impedance refers to the impedance, or opposition to current flow, of the component that often bears an electrical source to “drive” a load component. Meanwhile, the input impedance refers to the load component’s opposition to current flowing in from the electrical source.
How do you find the input resistance of a BJT?
The generalised formula for the input impedance of any circuit is ZIN = VIN/IIN. The DC bias circuit sets the DC operating “Q” point of the transistor and as the input capacitor, C1 acts as an open circuit and blocks any DC voltage, at DC (0Hz) the input impedance (ZIN) of the circuit will be extremely high.
What is the input resistance of Mosfet?
MOSFET input opamps may have input resistances as high as 1013 Ω. Resistance determines the amount of current that flows when a certain voltage is applied. High resistace means less current (at the same Voltage).
What is the input resistance of common emitter?
The input resistance of a common emitter transistor amplifier, if the output resistance is 500kΩ, the current gain α=0.98 and power gain is 6.0625×106, is : 300Ω C.
How do you find the input resistance of a MOSFET?
Hi! VDD=10V, Vtn=1V, β=1mA/V^2, VA=100V, load resistance RL=20k. After calculationg input current iin, I found input resistance Rin=vin/iin=1/((1/RL+1/RD)*(1/rds+gm)/(1/RL+1/RD+1/rds)+1/Rs).
How many input resistance does a MOSFET have?
ME: I just stood out of my chair and took i just started explaining by the help of diagrams that at the input of MOSFET there is a capacitor formed by sandwiching oxide layer in between two metal plates. As oxide layer is dielectric there is no question of drawing current so obviously, input impedance is infinite.