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Open Circuit Time Constant in High Frequency Response of CG Amplifier Formula

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GoOpen Circuit Time Constant between Gate and Drain of Common Gate Amplifier Formula

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Open circuit Time Constant is an approximate analysis technique used in electronic circuit design to determine the corner frequency of complex circuits. Check FAQs

T oc = C gs \cdot (\frac{1}{R sig} + g m) + (C t + C gd) \cdot R L

T_oc - Open Circuit Time Constant?C_gs - Gate to Source Capacitance?R_sig - Signal Resistance?g_m - Transconductance?C_t - Capacitance?C_gd - Gate to Drain Capacitance?R_L - Load Resistance?

Open Circuit Time Constant in High Frequency Response of CG Amplifier Example

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With units

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Here is how the Open Circuit Time Constant in High Frequency Response of CG Amplifier equation looks like with Values.

Here is how the Open Circuit Time Constant in High Frequency Response of CG Amplifier equation looks like with Units.

Here is how the Open Circuit Time Constant in High Frequency Response of CG Amplifier equation looks like.

0.0063 = 2.6 \cdot (\frac{1}{1.25} + 4.8) + (2.889 + 1.345) \cdot 1.49

0.0063s = 2.6μF \cdot (\frac{1}{1.25kΩ} + 4.8mS) + (2.889μF + 1.345μF) \cdot 1.49kΩ

0.0063 = 2.6 \cdot (\frac{1}{1.25} + 4.8) + (2.889 + 1.345) \cdot 1.49

Tip: Use pencil () icon above to edit Input Values and Units.

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Open Circuit Time Constant in High Frequency Response of CG Amplifier Solution

Follow our step by step solution on how to calculate Open Circuit Time Constant in High Frequency Response of CG Amplifier?

FIRST Step Consider the formula

T oc = C gs \cdot (\frac{1}{R sig} + g m) + (C t + C gd) \cdot R L

Next Step Substitute values of Variables

∴

T oc = 2.6μF \cdot (\frac{1}{1.25kΩ} + 4.8mS) + (2.889μF + 1.345μF) \cdot 1.49kΩ

Next Step Convert Units

∴

T oc = 2.6E-6F \cdot (\frac{1}{1250Ω} + 0.0048S) + (2.9E-6F + 1.3E-6F) \cdot 1490Ω

Next Step Prepare to Evaluate

∴

T oc = 2.6E-6 \cdot (\frac{1}{1250} + 0.0048) + (2.9E-6 + 1.3E-6) \cdot 1490

Next Step Evaluate

∴

T oc = 0.00630867456s

LAST Step Rounding Answer

∴

T oc = 0.0063s

Open Circuit Time Constant in High Frequency Response of CG Amplifier Formula Elements

Variables

Open Circuit Time Constant

Open circuit Time Constant is an approximate analysis technique used in electronic circuit design to determine the corner frequency of complex circuits.

Symbol: T_oc

Measurement: TimeUnit: s

Note: Value should be greater than 0.

Gate to Source Capacitance

Gate to Source Capacitance is defined as the capacitance that is observed between the gate and Source of the Junction of MOSFET.

Symbol: C_gs

Measurement: CapacitanceUnit: μF

Note: Value should be greater than 0.

Signal Resistance

Signal Resistance is the resistance which is fed with the signal voltage source vs to an Amplifier.

Symbol: R_sig

Measurement: Electric ResistanceUnit: kΩ

Note: Value should be greater than 0.

Transconductance

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.

Symbol: g_m

Measurement: Electric ConductanceUnit: mS

Note: Value should be greater than 0.

Capacitance

Capacitance is the ratio of the amount of electric charge stored on a conductor to a difference in electric potential.

Symbol: C_t

Measurement: CapacitanceUnit: μF

Note: Value should be greater than 0.

Gate to Drain Capacitance

Gate to Drain Capacitance is defined as the capacitance that is observed between the gate and drain of the Junction of MOSFET.

Symbol: C_gd

Measurement: CapacitanceUnit: μF

Note: Value should be greater than 0.

Load Resistance

Load resistance is the cumulative resistance of a circuit, as seen by the voltage, current, or power source driving that circuit.

Symbol: R_L

Measurement: Electric ResistanceUnit: kΩ

Note: Value should be greater than 0.

Credits

Creator Image

Created by Payal Priya

Birsa Institute of Technology (BIT), Sindri

Payal Priya has created this Formula and 600+ more formulas!

Verifier Image

Verified by Anshika Arya

National Institute Of Technology (NIT), Hamirpur

Anshika Arya has verified this Formula and 2500+ more formulas!

Other Formulas to find Open Circuit Time Constant

Go Open Circuit Time Constant between Gate and Drain of Common Gate Amplifier

T oc = (C t + C gd) \cdot R L

Other formulas in Response of CG Amplifier category

Go Amplifier Bandwidth in Discrete-Circuit Amplifier

BW = f h - f L

Go Collector Base Junction Resistance of CE Amplifier

R c = R sig \cdot (1 + g m \cdot R L) + R L

See More

How to Evaluate Open Circuit Time Constant in High Frequency Response of CG Amplifier?

Open Circuit Time Constant in High Frequency Response of CG Amplifier evaluator uses Open Circuit Time Constant = Gate to Source Capacitance*(1/Signal Resistance+Transconductance)+(Capacitance+Gate to Drain Capacitance)*Load Resistance to evaluate the Open Circuit Time Constant, The Open circuit time constant in high frequency response of CG amplifier formula is defined as a method is an approximate analysis technique used in electronic circuit design to determine the corner frequency of complex circuits. It is a special case of zero-value time constant (ZVT) method technique when reactive elements consist of only capacitors. Open Circuit Time Constant is denoted by T_oc symbol.

How to evaluate Open Circuit Time Constant in High Frequency Response of CG Amplifier using this online evaluator? To use this online evaluator for Open Circuit Time Constant in High Frequency Response of CG Amplifier, enter Gate to Source Capacitance (C_gs), Signal Resistance (R_sig), Transconductance (g_m), Capacitance (C_t), Gate to Drain Capacitance (C_gd) & Load Resistance (R_L) and hit the calculate button.

FAQs on Open Circuit Time Constant in High Frequency Response of CG Amplifier

What is the formula to find Open Circuit Time Constant in High Frequency Response of CG Amplifier?

The formula of Open Circuit Time Constant in High Frequency Response of CG Amplifier is expressed as Open Circuit Time Constant = Gate to Source Capacitance*(1/Signal Resistance+Transconductance)+(Capacitance+Gate to Drain Capacitance)*Load Resistance. Here is an example- 0.006309 = 2.6E-06*(1/1250+0.0048)+(2.889E-06+1.345E-06)*1490.

How to calculate Open Circuit Time Constant in High Frequency Response of CG Amplifier?

With Gate to Source Capacitance (C_gs), Signal Resistance (R_sig), Transconductance (g_m), Capacitance (C_t), Gate to Drain Capacitance (C_gd) & Load Resistance (R_L) we can find Open Circuit Time Constant in High Frequency Response of CG Amplifier using the formula - Open Circuit Time Constant = Gate to Source Capacitance*(1/Signal Resistance+Transconductance)+(Capacitance+Gate to Drain Capacitance)*Load Resistance.

What are the other ways to Calculate Open Circuit Time Constant?

Here are the different ways to Calculate Open Circuit Time Constant-

Open Circuit Time Constant=(Capacitance+Gate to Drain Capacitance)*Load Resistance

Can the Open Circuit Time Constant in High Frequency Response of CG Amplifier be negative?

No, the Open Circuit Time Constant in High Frequency Response of CG Amplifier, measured in Time cannot be negative.

Which unit is used to measure Open Circuit Time Constant in High Frequency Response of CG Amplifier?

Open Circuit Time Constant in High Frequency Response of CG Amplifier is usually measured using the Second[s] for Time. Millisecond[s], Microsecond[s], Nanosecond[s] are the few other units in which Open Circuit Time Constant in High Frequency Response of CG Amplifier can be measured.

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