Emitter Current for UJT based Thyristor Firing Circuit Calculator

✖Emitter Voltage is defined as the voltage across the emitter terminal of any transistor device.ⓘ Emitter Voltage [V_E]			+10% -10%
✖Diode voltage is defined as the voltage developed across diode when it is in on state in a thyristor based circuit.ⓘ Diode Voltage [V_d]			+10% -10%
✖Emitter resistance base 1 is the resistance offered to the current flowing through the base 1 junction on UJT.ⓘ Emitter Resistance Base 1 [R_B1]			+10% -10%
✖Emitter Resistance is a dynamic resistance of the emitter-base junction diode of any thyristor based firing circuit.ⓘ Emitter Resistance [R_E]			+10% -10%

✖Emitter current is the amplified output current of a thyrsitor based circuit.ⓘ Emitter Current for UJT based Thyristor Firing Circuit [I_E]

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Emitter Current for UJT based Thyristor Firing Circuit Solution

STEP 0: Pre-Calculation Summary

Formula Used

Emitter Current = (Emitter Voltage-Diode Voltage)/(Emitter Resistance Base 1+Emitter Resistance)
I_E = (V_E-V_d)/(R_B1+R_E)
This formula uses 5 Variables

Variables Used

Emitter Current - (Measured in Ampere) - Emitter current is the amplified output current of a thyrsitor based circuit.
Emitter Voltage - (Measured in Volt) - Emitter Voltage is defined as the voltage across the emitter terminal of any transistor device.
Diode Voltage - (Measured in Volt) - Diode voltage is defined as the voltage developed across diode when it is in on state in a thyristor based circuit.
Emitter Resistance Base 1 - (Measured in Ohm) - Emitter resistance base 1 is the resistance offered to the current flowing through the base 1 junction on UJT.
Emitter Resistance - (Measured in Ohm) - Emitter Resistance is a dynamic resistance of the emitter-base junction diode of any thyristor based firing circuit.

STEP 1: Convert Input(s) to Base Unit

Emitter Voltage: 60 Volt --> 60 Volt No Conversion Required
Diode Voltage: 20 Volt --> 20 Volt No Conversion Required
Emitter Resistance Base 1: 18 Ohm --> 18 Ohm No Conversion Required
Emitter Resistance: 12 Ohm --> 12 Ohm No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

I_E = (V_E-V_d)/(R_B1+R_E) --> (60-20)/(18+12)

Evaluating ... ...

I_E = 1.33333333333333

STEP 3: Convert Result to Output's Unit

1.33333333333333 Ampere --> No Conversion Required

FINAL ANSWER

1.33333333333333 ≈ 1.333333 Ampere <-- Emitter Current

(Calculation completed in 00.004 seconds)

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Created by Parminder Singh

Chandigarh University (CU), Punjab

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Emitter Current for UJT based Thyristor Firing Circuit Formula

LaTeX Go

Emitter Current = (Emitter Voltage-Diode Voltage)/(Emitter Resistance Base 1+Emitter Resistance)
I_E = (V_E-V_d)/(R_B1+R_E)

Discuss the applications of UJT?

The most common application of a unijunction transistor is as a triggering device for SCR’s and Triacs but other UJT applications include sawtoothed generators, simple oscillators, phase control, and timing circuits. The simplest of all UJT circuits is the Relaxation Oscillator producing non-sinusoidal waveforms.

In a basic and typical UJT relaxation oscillator circuit, the Emitter terminal of the UJT is connected to the junction of a series connected resistor and capacitor.

How to Calculate Emitter Current for UJT based Thyristor Firing Circuit?

Emitter Current for UJT based Thyristor Firing Circuit calculator uses Emitter Current = (Emitter Voltage-Diode Voltage)/(Emitter Resistance Base 1+Emitter Resistance) to calculate the Emitter Current, The Emitter current for UJT based Thyristor firing circuit formula is defined as the magnitude of the current that flows through the emitter when it is in conducting mode. Emitter Current is denoted by I_E symbol.

How to calculate Emitter Current for UJT based Thyristor Firing Circuit using this online calculator? To use this online calculator for Emitter Current for UJT based Thyristor Firing Circuit, enter Emitter Voltage (V_E), Diode Voltage (V_d), Emitter Resistance Base 1 (R_B1) & Emitter Resistance (R_E) and hit the calculate button. Here is how the Emitter Current for UJT based Thyristor Firing Circuit calculation can be explained with given input values -> 1.333333 = (60-20)/(18+12).

FAQ

What is Emitter Current for UJT based Thyristor Firing Circuit?

The Emitter current for UJT based Thyristor firing circuit formula is defined as the magnitude of the current that flows through the emitter when it is in conducting mode and is represented as I_E = (V_E-V_d)/(R_B1+R_E) or Emitter Current = (Emitter Voltage-Diode Voltage)/(Emitter Resistance Base 1+Emitter Resistance). Emitter Voltage is defined as the voltage across the emitter terminal of any transistor device, Diode voltage is defined as the voltage developed across diode when it is in on state in a thyristor based circuit, Emitter resistance base 1 is the resistance offered to the current flowing through the base 1 junction on UJT & Emitter Resistance is a dynamic resistance of the emitter-base junction diode of any thyristor based firing circuit.

How to calculate Emitter Current for UJT based Thyristor Firing Circuit?

The Emitter current for UJT based Thyristor firing circuit formula is defined as the magnitude of the current that flows through the emitter when it is in conducting mode is calculated using Emitter Current = (Emitter Voltage-Diode Voltage)/(Emitter Resistance Base 1+Emitter Resistance). To calculate Emitter Current for UJT based Thyristor Firing Circuit, you need Emitter Voltage (V_E), Diode Voltage (V_d), Emitter Resistance Base 1 (R_B1) & Emitter Resistance (R_E). With our tool, you need to enter the respective value for Emitter Voltage, Diode Voltage, Emitter Resistance Base 1 & Emitter Resistance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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