Emitter Base Charging Time Calculator

✖Emitter collector delay time is defined as the transit time across the base-collector depletion region or space.ⓘ Emitter Collector Delay Time [τ_ec]			+10% -10%
✖Base Collector Delay Time refers to the additional time taken by the signal to propagate through space charged region of base collector junction.ⓘ Base Collector Delay Time [τ_scr]			+10% -10%
✖Collector charging time refers to the time taken for the minority carriers in the base region of a BJT to be swept out of the collector region after the transistor is turned off.ⓘ Collector Charging Time [τ_c]			+10% -10%
✖Base transit time is the average time the minority carriers need to traverse the quasi-neutral region in the base.ⓘ Base Transit Time [τ_b]			+10% -10%

✖Emitter charging time is defined as drift in the motion of the charged particles induced by a field when you forward bias the emitter junction you get a large diffusion.ⓘ Emitter Base Charging Time [τ_e]

⎘ Copy

👎

Formula

✖

Emitter Base Charging Time

Formula

`"τ"_{"e"} = "τ"_{"ec"}-("τ"_{"scr"}+"τ"_{"c"}+"τ"_{"b"})`

Example

`"5273μs"="5295μs"-("5.5μs"+"6.4μs"+"10.1μs")`

Calculator

LaTeX

Reset

👍

Download BJT Microwave Devices Formulas PDF PDF Image

Emitter Base Charging Time Solution

STEP 0: Pre-Calculation Summary

Formula Used

Emitter Charging Time = Emitter Collector Delay Time-(Base Collector Delay Time+Collector Charging Time+Base Transit Time)
τ_e = τ_ec-(τ_scr+τ_c+τ_b)
This formula uses 5 Variables

Variables Used

Emitter Charging Time - (Measured in Second) - Emitter charging time is defined as drift in the motion of the charged particles induced by a field when you forward bias the emitter junction you get a large diffusion.
Emitter Collector Delay Time - (Measured in Second) - Emitter collector delay time is defined as the transit time across the base-collector depletion region or space.
Base Collector Delay Time - (Measured in Second) - Base Collector Delay Time refers to the additional time taken by the signal to propagate through space charged region of base collector junction.
Collector Charging Time - (Measured in Second) - Collector charging time refers to the time taken for the minority carriers in the base region of a BJT to be swept out of the collector region after the transistor is turned off.
Base Transit Time - (Measured in Second) - Base transit time is the average time the minority carriers need to traverse the quasi-neutral region in the base.

STEP 1: Convert Input(s) to Base Unit

Emitter Collector Delay Time: 5295 Microsecond --> 0.005295 Second (Check conversion here)
Base Collector Delay Time: 5.5 Microsecond --> 5.5E-06 Second (Check conversion here)
Collector Charging Time: 6.4 Microsecond --> 6.4E-06 Second (Check conversion here)
Base Transit Time: 10.1 Microsecond --> 1.01E-05 Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

τ_e = τ_ec-(τ_scr+τ_c+τ_b) --> 0.005295-(5.5E-06+6.4E-06+1.01E-05)

Evaluating ... ...

τ_e = 0.005273

STEP 3: Convert Result to Output's Unit

0.005273 Second -->5273 Microsecond (Check conversion here)

FINAL ANSWER

5273 Microsecond <-- Emitter Charging Time

(Calculation completed in 00.004 seconds)

You are here -

Home » Engineering » Electronics » Microwave Theory » Microwave Semiconductor Devices » BJT Microwave Devices » Emitter Base Charging Time

Credits

Created by Shobhit Dimri

Bipin Tripathi Kumaon Institute of Technology (BTKIT), Dwarahat

Shobhit Dimri has created this Calculator and 900+ more calculators!

Verified by Urvi Rathod

Vishwakarma Government Engineering College (VGEC), Ahmedabad

Urvi Rathod has verified this Calculator and 1900+ more calculators!

< 15 BJT Microwave Devices Calculators

Maximum Frequency of Oscillations

Go Maximum Frequency of Oscillations = sqrt(Common Emitter Short Circuit Gain Frequency/(8*pi*Base Resistance*Collector Base Capacitance))

Emitter Base Charging Time

Go Emitter Charging Time = Emitter Collector Delay Time-(Base Collector Delay Time+Collector Charging Time+Base Transit Time)

Base Collector Delay Time

Go Base Collector Delay Time = Emitter Collector Delay Time-(Collector Charging Time+Base Transit Time+Emitter Charging Time)

Collector Charging Time

Go Collector Charging Time = Emitter Collector Delay Time-(Base Collector Delay Time+Base Transit Time+Emitter Charging Time)

Base Transit Time

Go Base Transit Time = Emitter Collector Delay Time-(Base Collector Delay Time+Collector Charging Time+Emitter Charging Time)

Emitter to Collector Delay Time

Go Emitter Collector Delay Time = Base Collector Delay Time+Collector Charging Time+Base Transit Time+Emitter Charging Time

Collector Base Capacitance

Go Collector Base Capacitance = Cut-off Frequency in BJT/(8*pi*Maximum Frequency of Oscillations^2*Base Resistance)

Base Resistance

Go Base Resistance = Cut-off Frequency in BJT/(8*pi*Maximum Frequency of Oscillations^2*Collector Base Capacitance)

Avalanche Multiplication Factor

Go Avalanche Multiplication Factor = 1/(1-(Applied Voltage/Avalanche Breakdown Voltage)^Doping Numerical Factor)

Saturation Drift Velocity

Go Saturated Drift Velocity in BJT = Emitter to Collector Distance/Average Time to Traverse Emitter to Collector

Emitter to Collector Distance

Go Emitter to Collector Distance = Maximum Applied Voltage in BJT/Maximum Electric Field in BJT

Total Charging Time

Go Total Charging Time = Emitter Charging Time+Collector Charging Time

Cut-off Frequency of Microwave

Go Cut-off Frequency in BJT = 1/(2*pi*Emitter Collector Delay Time)

Total Transit Time

Go Total Transit Time = Base Transit Time+Collector Depletion Region

Hole Current of Emitter

Go Hole Current of Emitter = Base Current+Collector Current

Emitter Base Charging Time Formula

Emitter Charging Time = Emitter Collector Delay Time-(Base Collector Delay Time+Collector Charging Time+Base Transit Time)
τ_e = τ_ec-(τ_scr+τ_c+τ_b)

What are junctions?

A microwave circuit consists of several microwave devices connected in some way to achieve the desired transmission of MW signal.

How to Calculate Emitter Base Charging Time?

Emitter Base Charging Time calculator uses Emitter Charging Time = Emitter Collector Delay Time-(Base Collector Delay Time+Collector Charging Time+Base Transit Time) to calculate the Emitter Charging Time, Emitter Base Charging Time is the time required for the charge carriers to travel across the base region and reach the collector in a bipolar junction transistor (BJT) during the switching process. It is also known as the minority carrier storage time or base transit time. Emitter Charging Time is denoted by τ_e symbol.

How to calculate Emitter Base Charging Time using this online calculator? To use this online calculator for Emitter Base Charging Time, enter Emitter Collector Delay Time (τ_ec), Base Collector Delay Time (τ_scr), Collector Charging Time (τ_c) & Base Transit Time (τ_b) and hit the calculate button. Here is how the Emitter Base Charging Time calculation can be explained with given input values -> 5.3E+9 = 0.005295-(5.5E-06+6.4E-06+1.01E-05).

FAQ

What is Emitter Base Charging Time?

Emitter Base Charging Time is the time required for the charge carriers to travel across the base region and reach the collector in a bipolar junction transistor (BJT) during the switching process. It is also known as the minority carrier storage time or base transit time and is represented as τ_e = τ_ec-(τ_scr+τ_c+τ_b) or Emitter Charging Time = Emitter Collector Delay Time-(Base Collector Delay Time+Collector Charging Time+Base Transit Time). Emitter collector delay time is defined as the transit time across the base-collector depletion region or space, Base Collector Delay Time refers to the additional time taken by the signal to propagate through space charged region of base collector junction, Collector charging time refers to the time taken for the minority carriers in the base region of a BJT to be swept out of the collector region after the transistor is turned off & Base transit time is the average time the minority carriers need to traverse the quasi-neutral region in the base.

How to calculate Emitter Base Charging Time?

Emitter Base Charging Time is the time required for the charge carriers to travel across the base region and reach the collector in a bipolar junction transistor (BJT) during the switching process. It is also known as the minority carrier storage time or base transit time is calculated using Emitter Charging Time = Emitter Collector Delay Time-(Base Collector Delay Time+Collector Charging Time+Base Transit Time). To calculate Emitter Base Charging Time, you need Emitter Collector Delay Time (τ_ec), Base Collector Delay Time (τ_scr), Collector Charging Time (τ_c) & Base Transit Time (τ_b). With our tool, you need to enter the respective value for Emitter Collector Delay Time, Base Collector Delay Time, Collector Charging Time & Base Transit Time and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

Home

FREE PDFs

🔍 Search