Enter your supply voltage, resistor value, and beta into the calculator to determine your emitter current.

Emitter Current Calculation Formula

The following formula is used to calculate the emitter current from the supply voltage and resistor value.

Emitter Current = (Supply Voltage / Resistor Value) * (1 + β)

Variables:

  • Emitter Current is the current flowing through the emitter (mA)
  • Supply Voltage is the voltage provided to the circuit (V)
  • Resistor Value is the resistance in the circuit (Ω)
  • Beta (β) is the current gain of the transistor

To calculate the emitter current, divide the supply voltage by the resistor value, and then multiply the result by (1 + β).

What is Emitter Current Calculation?

Emitter current calculation refers to the process of determining the current flowing through the emitter of a bipolar junction transistor (BJT). This involves understanding the supply voltage, the resistance in the circuit, and the current gain of the transistor. Proper emitter current calculation ensures the efficient functioning of the transistor and helps in designing stable and reliable circuits.

How to Calculate Emitter Current?

The following steps outline how to calculate the emitter current using the given formula:

  1. First, determine your supply voltage.
  2. Next, determine the resistor value in the circuit.
  3. Determine the beta ( β) value, which is the current gain of the transistor.
  4. Divide the supply voltage by the resistor value.
  5. Multiply the result by (1 + β).
  6. The resulting value is the emitter current in mA.