Series Voltage Regulator Calculator(One Transistor One Diode)

 

Specification:
V
V

V

Theoretical Results:





Series Voltage Regulator with One Transistor One Diode Circuit Diagram

Online Series Voltage Regulator Web Calculator with One Transistor and One Diode

This online Series Voltage Regulator Calculator is a power supply design tool to simplify the process of designing a series voltage regulator using a single transistor and diode. This circuit is also called discrete bipolar series pass regulator. This calculator is ideal for electronics hobbyists, engineers, and students working on power supply circuits. It calculates critical values like the head voltage, zener diode voltage, load resistor, sense resistor, and power dissipation, based on your input parameters: input voltage (Vin), output voltage (Vout), load current (IL), and transistor hFE (minimum).

Equations Used in the Calculator

The calculator uses the following essential equations:

  1. Head Voltage (Vh):

    Vh=Vin−VoutV_h = V_{in} - V_{out}

    This is the voltage difference across the regulator.

  2. Zener Diode Voltage (Vz):

    Vz=Vout+VBEV_z = V_{out} + V_{BE}

    Assumes VBE≈0.6 V

  3. Load Resistor (RL):

    RL=VoutILR_L = \frac{V_{out}}{I_L}

    Determines the resistance to support the desired load current.

  4. Sense Resistor (Rs):

    Rs=Vin⋅hFE1.2⋅ILR_s = \frac{V_{in} \cdot hFE}{1.2 \cdot I_L}

    Provides feedback for regulating the output voltage.

  5. Power Dissipation (Pd):

    Pd=(Vin−Vout)⋅IL=Vh⋅ILP_d = (V_{in} - V_{out}) \cdot I_L = V_h \cdot I_L

    Helps ensure the transistor can handle the power dissipation safely.

Applications and Benefits

This calculator is perfect for designing series voltage regulators used in power supplies for microcontroller circuits, LED drivers, and other low-power applications. It provides quick and accurate results, helping you save time and improve circuit reliability.

Related Resources

For further learning and tools, check out these valuable resources:

These resources complement the Series Voltage Regulator Calculator and expand your knowledge of voltage regulation, power supply design, and related calculations. Use them to optimize your designs and make your circuits more efficient!

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