Output Resistance at Another Drain of Controlled Source Transistor Solution

STEP 0: Pre-Calculation Summary
Formula Used
Drain Resistance = Resistance of Secondary Winding in Primary+2*Finite Resistance+2*Finite Resistance*MOSFET Primary Transconductance*Resistance of Secondary Winding in Primary
Rd = R2+2*Rfi+2*Rfi*gmp*R2
This formula uses 4 Variables
Variables Used
Drain Resistance - (Measured in Ohm) - Drain resistance is the ratio of change in drain to source voltage to corresponding change in drain current for a constant gate to source voltage.
Resistance of Secondary Winding in Primary - (Measured in Ohm) - The Resistance of Secondary Winding in Primary of a MOSFET is the opposition to the current flowing through it. It depends on the specific MOSFET design and the operating conditions.
Finite Resistance - (Measured in Ohm) - A finite resistance simply means that the resistance in a circuit is not infinite or zero. In other words, the circuit has some amount of resistance, which can affect the behavior of the circuit.
MOSFET Primary Transconductance - (Measured in Siemens) - MOSFET Primary Transconductance is the change in the drain current divided by the small change in the gate/source voltage with a constant drain/source voltage.
STEP 1: Convert Input(s) to Base Unit
Resistance of Secondary Winding in Primary: 0.064 Kilohm --> 64 Ohm (Check conversion ​here)
Finite Resistance: 0.065 Kilohm --> 65 Ohm (Check conversion ​here)
MOSFET Primary Transconductance: 19.77 Millisiemens --> 0.01977 Siemens (Check conversion ​here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Rd = R2+2*Rfi+2*Rfi*gmp*R2 --> 64+2*65+2*65*0.01977*64
Evaluating ... ...
Rd = 358.4864
STEP 3: Convert Result to Output's Unit
358.4864 Ohm -->0.3584864 Kilohm (Check conversion ​here)
FINAL ANSWER
0.3584864 0.358486 Kilohm <-- Drain Resistance
(Calculation completed in 00.004 seconds)

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Birsa Institute of Technology (BIT), Sindri
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Overall Feedback Voltage Gain of Common-Source Amplifier
​ LaTeX ​ Go Feedback Voltage Gain = -MOSFET Primary Transconductance*(Input Resistance/(Input Resistance+Signal Resistance))*(1/Drain Resistance+1/Load Resistance+1/Finite Output Resistance)^-1
Open-Circuit Voltage Gain of CS Amplifier
​ LaTeX ​ Go Open Circuit Voltage Gain = Finite Output Resistance/(Finite Output Resistance+1/MOSFET Primary Transconductance)
Current Gain of Controlled Source Transistor
​ LaTeX ​ Go Current Gain = 1/(1+1/(MOSFET Primary Transconductance*Resistance between Drain and Ground))
Total Voltage Gain of CS Amplifier
​ LaTeX ​ Go Voltage Gain = Load Voltage/Input Voltage

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Input Resistance of Common Emitter Amplifier
​ LaTeX ​ Go Input Resistance = (1/Base Resistance+1/Base Resistance 2+1/Small Signal Input Resistance)^-1
Input Impedance of Common-Base Amplifier
​ LaTeX ​ Go Input Impedance = (1/Emitter Resistance+1/Small Signal Input Resistance)^(-1)
Fundamental Voltage in Common-Emitter Amplifier
​ LaTeX ​ Go Fundamental Component Voltage = Input Resistance*Base Current
Emitter Current of Common-Base Amplifier
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Output Resistance at Another Drain of Controlled Source Transistor Formula

​LaTeX ​Go
Drain Resistance = Resistance of Secondary Winding in Primary+2*Finite Resistance+2*Finite Resistance*MOSFET Primary Transconductance*Resistance of Secondary Winding in Primary
Rd = R2+2*Rfi+2*Rfi*gmp*R2

What is a controlled current source?

A controlled or dependent current source on the other hand changes its available current depending upon the voltage across, or the current through, some other element connected to the circuit. A current source that depends on a current input is generally referred to as a Current Controlled Current Source or CCCS.

How to Calculate Output Resistance at Another Drain of Controlled Source Transistor?

Output Resistance at Another Drain of Controlled Source Transistor calculator uses Drain Resistance = Resistance of Secondary Winding in Primary+2*Finite Resistance+2*Finite Resistance*MOSFET Primary Transconductance*Resistance of Secondary Winding in Primary to calculate the Drain Resistance, The Output resistance at another drain of controlled source transistor formula is defined as simply the parallel combination of the Emitter (Source) resistor RL and the small-signal emitter (source) resistance of the transistor rE. Drain Resistance is denoted by Rd symbol.

How to calculate Output Resistance at Another Drain of Controlled Source Transistor using this online calculator? To use this online calculator for Output Resistance at Another Drain of Controlled Source Transistor, enter Resistance of Secondary Winding in Primary (R2), Finite Resistance (Rfi) & MOSFET Primary Transconductance (gmp) and hit the calculate button. Here is how the Output Resistance at Another Drain of Controlled Source Transistor calculation can be explained with given input values -> 0.000358 = 64+2*65+2*65*0.01977*64.

FAQ

What is Output Resistance at Another Drain of Controlled Source Transistor?
The Output resistance at another drain of controlled source transistor formula is defined as simply the parallel combination of the Emitter (Source) resistor RL and the small-signal emitter (source) resistance of the transistor rE and is represented as Rd = R2+2*Rfi+2*Rfi*gmp*R2 or Drain Resistance = Resistance of Secondary Winding in Primary+2*Finite Resistance+2*Finite Resistance*MOSFET Primary Transconductance*Resistance of Secondary Winding in Primary. The Resistance of Secondary Winding in Primary of a MOSFET is the opposition to the current flowing through it. It depends on the specific MOSFET design and the operating conditions, A finite resistance simply means that the resistance in a circuit is not infinite or zero. In other words, the circuit has some amount of resistance, which can affect the behavior of the circuit & MOSFET Primary Transconductance is the change in the drain current divided by the small change in the gate/source voltage with a constant drain/source voltage.
How to calculate Output Resistance at Another Drain of Controlled Source Transistor?
The Output resistance at another drain of controlled source transistor formula is defined as simply the parallel combination of the Emitter (Source) resistor RL and the small-signal emitter (source) resistance of the transistor rE is calculated using Drain Resistance = Resistance of Secondary Winding in Primary+2*Finite Resistance+2*Finite Resistance*MOSFET Primary Transconductance*Resistance of Secondary Winding in Primary. To calculate Output Resistance at Another Drain of Controlled Source Transistor, you need Resistance of Secondary Winding in Primary (R2), Finite Resistance (Rfi) & MOSFET Primary Transconductance (gmp). With our tool, you need to enter the respective value for Resistance of Secondary Winding in Primary, Finite Resistance & MOSFET Primary Transconductance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Drain Resistance?
In this formula, Drain Resistance uses Resistance of Secondary Winding in Primary, Finite Resistance & MOSFET Primary Transconductance. We can use 3 other way(s) to calculate the same, which is/are as follows -
  • Drain Resistance = Finite Output Resistance+Source Resistance+(MOSFET Primary Transconductance*Finite Output Resistance*Source Resistance)
  • Drain Resistance = Finite Output Resistance+Source Resistance+(MOSFET Primary Transconductance*Finite Output Resistance*Source Resistance)
  • Drain Resistance = Finite Output Resistance+(MOSFET Primary Transconductance*Finite Output Resistance)*(1/Emitter Resistance+1/Small Signal Input Resistance)
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