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Total Charging Time Formula

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The Total Charging Time in a BJT is the duration for both emitter and collector currents to reach a substantial portion of their final values upon transistor activation. Check FAQs
τct=τe+τc
τct - Total Charging Time?τe - Emitter Charging Time?τc - Collector Charging Time?

Total Charging Time Example

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With units
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Here is how the Total Charging Time equation looks like with Values.

Here is how the Total Charging Time equation looks like with Units.

Here is how the Total Charging Time equation looks like.

5279.4Edit=5273Edit+6.4Edit
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HomeIcon Home » Category Engineering » Category Electronics » Category Microwave Theory » fx Total Charging Time

Total Charging Time Solution

Follow our step by step solution on how to calculate Total Charging Time?

FIRST Step Consider the formula
τct=τe+τc
Next Step Substitute values of Variables
∴ τct=5273μs+6.4μs
Next Step Convert Units
∴ τct=0.0053s+6.4E-6s
Next Step Prepare to Evaluate
∴ τct=0.0053+6.4E-6
Next Step Evaluate
∴τct=0.0052794s
LAST Step Convert to Output's Unit
∴τct=5279.4μs

Total Charging Time Formula Elements

Variables
Total Charging Time
The Total Charging Time in a BJT is the duration for both emitter and collector currents to reach a substantial portion of their final values upon transistor activation.
Symbol: τct
Measurement: TimeUnit: μs
Note: Value should be greater than 0.
Formulas to find Total Charging TimeOpen Variable
Emitter Charging Time
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.
Symbol: τe
Measurement: TimeUnit: μs
Note: Value should be greater than 0.
Formulas to find Emitter Charging TimeOpen Variable
Collector Charging Time
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.
Symbol: τc
Measurement: TimeUnit: μs
Note: Value should be greater than 0.
Formulas to find Collector Charging TimeOpen Variable

Other formulas in BJT Microwave Devices category

​Go Cut-off Frequency of Microwave
fco=12⋅π⋅τec
​Go Base Transit Time
τb=τec-(τscr+τc+τe)
​Go Base Collector Delay Time
τscr=τec-(τc+τb+τe)
​Go Collector Charging Time
τc=τec-(τscr+τb+τe)

How to Evaluate Total Charging Time?

Total Charging Time evaluator uses Total Charging Time = Emitter Charging Time+Collector Charging Time to evaluate the Total Charging Time, The Total Charging Time in a BJT is the duration for both emitter and collector currents to reach a substantial portion of their final values upon transistor activation. Total Charging Time is denoted by τct symbol.

How to evaluate Total Charging Time using this online evaluator? To use this online evaluator for Total Charging Time, enter Emitter Charging Time (τe) & Collector Charging Time (τc) and hit the calculate button.

FAQs on Total Charging Time

What is the formula to find Total Charging Time?
The formula of Total Charging Time is expressed as Total Charging Time = Emitter Charging Time+Collector Charging Time. Here is an example- 5.3E+9 = 0.005273+6.4E-06.
How to calculate Total Charging Time?
With Emitter Charging Time (τe) & Collector Charging Time (τc) we can find Total Charging Time using the formula - Total Charging Time = Emitter Charging Time+Collector Charging Time.
Can the Total Charging Time be negative?
No, the Total Charging Time, measured in Time cannot be negative.
Which unit is used to measure Total Charging Time?
Total Charging Time is usually measured using the Microsecond[μs] for Time. Second[μs], Millisecond[μs], Nanosecond[μs] are the few other units in which Total Charging Time can be measured.
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