Load Resistance of CG Amplifier Calculator

✖Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.ⓘ Resistance [R_t]			+10% -10%
✖Transconductance is the ratio of the change in current at the output terminal to the change in the voltage at the input terminal of an active device.ⓘ Transconductance [g_m]			+10% -10%
✖Finite input resistance is the finite resistance seen by the current source or voltage source which drives the circuit.ⓘ Finite Input Resistance [R_in]			+10% -10%

✖Load resistance is the cumulative resistance of a circuit, as seen by the voltage, current, or power source driving that circuit.ⓘ Load Resistance of CG Amplifier [R_L]

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Load Resistance of CG Amplifier Solution

STEP 0: Pre-Calculation Summary

Formula Used

Load Resistance = Resistance*(1+(Transconductance*Finite Input Resistance))-Finite Input Resistance
R_L = R_t*(1+(g_m*R_in))-R_in
This formula uses 4 Variables

Variables Used

Load Resistance - (Measured in Ohm) - Load resistance is the cumulative resistance of a circuit, as seen by the voltage, current, or power source driving that circuit.
Resistance - (Measured in Ohm) - Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.
Transconductance - (Measured in Siemens) - Transconductance is the ratio of the change in current at the output terminal to the change in the voltage at the input terminal of an active device.
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.

STEP 1: Convert Input(s) to Base Unit

Resistance: 0.48 Kilohm --> 480 Ohm (Check conversion here)
Transconductance: 4.8 Millisiemens --> 0.0048 Siemens (Check conversion here)
Finite Input Resistance: 0.78 Kilohm --> 780 Ohm (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_L = R_t*(1+(g_m*R_in))-R_in --> 480*(1+(0.0048*780))-780

Evaluating ... ...

R_L = 1497.12

STEP 3: Convert Result to Output's Unit

1497.12 Ohm -->1.49712 Kilohm (Check conversion here)

FINAL ANSWER

1.49712 Kilohm <-- Load Resistance

(Calculation completed in 00.004 seconds)

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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

Load Resistance of CG Amplifier Formula

LaTeX Go

Load Resistance = Resistance*(1+(Transconductance*Finite Input Resistance))-Finite Input Resistance
R_L = R_t*(1+(g_m*R_in))-R_in

What does a CG Amplifier do?

A CG amplifier, also known as a Cathode Gain Amplifier, is a crucial component in modern vacuum tubes. It amplifies the cathode current, which controls the output signal, allowing for greater signal gain and overall performance. The amplifier employs a combination of grid and plate resistances to boost the cathode current, resulting in improved audio quality and frequency response.

How to Calculate Load Resistance of CG Amplifier?

Load Resistance of CG Amplifier calculator uses Load Resistance = Resistance*(1+(Transconductance*Finite Input Resistance))-Finite Input Resistance to calculate the Load Resistance, Load Resistance of CG Amplifier refers to the opposition to the current flowing through the output transistor when the input signal is applied. This resistance is crucial in determining the amplifier's gain and stability. Load Resistance is denoted by R_L symbol.

How to calculate Load Resistance of CG Amplifier using this online calculator? To use this online calculator for Load Resistance of CG Amplifier, enter Resistance (R_t), Transconductance (g_m) & Finite Input Resistance (R_in) and hit the calculate button. Here is how the Load Resistance of CG Amplifier calculation can be explained with given input values -> 0.001497 = 480*(1+(0.0048*780))-780.

FAQ

What is Load Resistance of CG Amplifier?

Load Resistance of CG Amplifier refers to the opposition to the current flowing through the output transistor when the input signal is applied. This resistance is crucial in determining the amplifier's gain and stability and is represented as R_L = R_t*(1+(g_m*R_in))-R_in or Load Resistance = Resistance*(1+(Transconductance*Finite Input Resistance))-Finite Input Resistance. Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm, Transconductance is the ratio of the change in current at the output terminal to the change in the voltage at the input terminal of an active device & Finite input resistance is the finite resistance seen by the current source or voltage source which drives the circuit.

How to calculate Load Resistance of CG Amplifier?

Load Resistance of CG Amplifier refers to the opposition to the current flowing through the output transistor when the input signal is applied. This resistance is crucial in determining the amplifier's gain and stability is calculated using Load Resistance = Resistance*(1+(Transconductance*Finite Input Resistance))-Finite Input Resistance. To calculate Load Resistance of CG Amplifier, you need Resistance (R_t), Transconductance (g_m) & Finite Input Resistance (R_in). With our tool, you need to enter the respective value for Resistance, Transconductance & Finite Input 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 Load Resistance?

In this formula, Load Resistance uses Resistance, Transconductance & Finite Input Resistance. We can use 1 other way(s) to calculate the same, which is/are as follows -

Load Resistance = (Output Voltage/(Transconductance*Gate to Source Voltage))

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