Resistance between Gate and Source of CG Amplifier Solution

STEP 0: Pre-Calculation Summary
Formula Used
Resistance = 1/(1/Finite Input Resistance+1/Signal Resistance)
Rt = 1/(1/Rin+1/Rsig)
This formula uses 3 Variables
Variables Used
Resistance - (Measured in Ohm) - Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.
Finite Input Resistance - (Measured in Ohm) - Finite input resistance is the finite resistance seen by the current source or voltage source which drives the circuit.
Signal Resistance - (Measured in Ohm) - Signal Resistance is the resistance which is fed with the signal voltage source vs to an Amplifier.
STEP 1: Convert Input(s) to Base Unit
Finite Input Resistance: 0.78 Kilohm --> 780 Ohm (Check conversion ​here)
Signal Resistance: 1.25 Kilohm --> 1250 Ohm (Check conversion ​here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
Rt = 1/(1/Rin+1/Rsig) --> 1/(1/780+1/1250)
Evaluating ... ...
Rt = 480.295566502463
STEP 3: Convert Result to Output's Unit
480.295566502463 Ohm -->0.480295566502463 Kilohm (Check conversion ​here)
FINAL ANSWER
0.480295566502463 0.480296 Kilohm <-- Resistance
(Calculation completed in 00.004 seconds)

Credits

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Created by Payal Priya
Birsa Institute of Technology (BIT), Sindri
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National Institute Of Technology (NIT), Hamirpur
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Response of CG Amplifier Calculators

Open Circuit Time Constant in High Frequency Response of CG Amplifier
​ LaTeX ​ Go Open Circuit Time Constant = Gate to Source Capacitance*(1/Signal Resistance+Transconductance)+(Capacitance+Gate to Drain Capacitance)*Load Resistance
Input Resistance of CG Amplifier
​ LaTeX ​ Go Resistance = (Finite Input Resistance+Load Resistance)/(1+(Transconductance*Finite Input Resistance))
Second Pole-Frequency of CG Amplifier
​ LaTeX ​ Go Second Pole Frequency = 1/(2*pi*Load Resistance*(Gate to Drain Capacitance+Capacitance))
Open Circuit Time Constant between Gate and Drain of Common Gate Amplifier
​ LaTeX ​ Go Open Circuit Time Constant = (Capacitance+Gate to Drain Capacitance)*Load Resistance

Common Stage Amplifiers Calculators

Effective High Frequency Time Constant of CE Amplifier
​ LaTeX ​ Go Effective High Frequency Time Constant = Base Emitter Capacitance*Signal Resistance+(Collector Base Junction Capacitance*(Signal Resistance*(1+Transconductance*Load Resistance)+Load Resistance))+(Capacitance*Load Resistance)
High-Frequency Band given Complex Frequency Variable
​ LaTeX ​ Go Amplifier Gain in Mid Band = sqrt(((1+(3 dB Frequency/Frequency))*(1+(3 dB Frequency/Frequency Observed)))/((1+(3 dB Frequency/Pole Frequency))*(1+(3 dB Frequency/Second Pole Frequency))))
Collector Base Junction Resistance of CE Amplifier
​ LaTeX ​ Go Collector Resistance = Signal Resistance*(1+Transconductance*Load Resistance)+Load Resistance
Amplifier Bandwidth in Discrete-Circuit Amplifier
​ LaTeX ​ Go Amplifier Bandwidth = High Frequency-Low Frequency

Resistance between Gate and Source of CG Amplifier Formula

​LaTeX ​Go
Resistance = 1/(1/Finite Input Resistance+1/Signal Resistance)
Rt = 1/(1/Rin+1/Rsig)

What is CG amplifier?

In electronics, a common-gate amplifier is one of three basic single-stage field-effect transistor (FET) amplifier topologies, typically used as a current buffer or voltage amplifier. In this circuit the source terminal of the transistor serves as the input, the drain is the output and the gate is connected to the ground, or "common," hence its name. The analogous bipolar junction transistor circuit is the common-base amplifier.

How to Calculate Resistance between Gate and Source of CG Amplifier?

Resistance between Gate and Source of CG Amplifier calculator uses Resistance = 1/(1/Finite Input Resistance+1/Signal Resistance) to calculate the Resistance, The Resistance between gate and source of CG amplifier formula is defined as an important parameter in the design of a transistor amplifier and as such allows amplifiers to be characterized according to their effective input and output impedances as well as their power and current ratings. Resistance is denoted by Rt symbol.

How to calculate Resistance between Gate and Source of CG Amplifier using this online calculator? To use this online calculator for Resistance between Gate and Source of CG Amplifier, enter Finite Input Resistance (Rin) & Signal Resistance (Rsig) and hit the calculate button. Here is how the Resistance between Gate and Source of CG Amplifier calculation can be explained with given input values -> 0.00048 = 1/(1/780+1/1250).

FAQ

What is Resistance between Gate and Source of CG Amplifier?
The Resistance between gate and source of CG amplifier formula is defined as an important parameter in the design of a transistor amplifier and as such allows amplifiers to be characterized according to their effective input and output impedances as well as their power and current ratings and is represented as Rt = 1/(1/Rin+1/Rsig) or Resistance = 1/(1/Finite Input Resistance+1/Signal Resistance). Finite input resistance is the finite resistance seen by the current source or voltage source which drives the circuit & Signal Resistance is the resistance which is fed with the signal voltage source vs to an Amplifier.
How to calculate Resistance between Gate and Source of CG Amplifier?
The Resistance between gate and source of CG amplifier formula is defined as an important parameter in the design of a transistor amplifier and as such allows amplifiers to be characterized according to their effective input and output impedances as well as their power and current ratings is calculated using Resistance = 1/(1/Finite Input Resistance+1/Signal Resistance). To calculate Resistance between Gate and Source of CG Amplifier, you need Finite Input Resistance (Rin) & Signal Resistance (Rsig). With our tool, you need to enter the respective value for Finite Input Resistance & Signal Resistance 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 Resistance?
In this formula, Resistance uses Finite Input Resistance & Signal Resistance. We can use 3 other way(s) to calculate the same, which is/are as follows -
  • Resistance = (Finite Input Resistance+Load Resistance)/(1+(Transconductance*Finite Input Resistance))
  • Resistance = Test Voltage/Test Current
  • Resistance = (Finite Input Resistance+Load Resistance)/(1+(Transconductance*Finite Input Resistance))
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