1. What is Supply Power of Output Stage?

Supply Power of Output Stage in an amplifier refers to the combined output power of all the channels or voices in the amplifier. It is calculated by multiplying the output power of each channel.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_{out} \) — Supply Power of Output Stage (Watt)
• \( V_{cc} \) — Supply Voltage (Volt)
• \( I_{b} \) — Input Bias Current (Ampere)

Explanation: This formula calculates the supply power based on the supply voltage and input bias current, multiplied by a factor of 2.

3. Importance of Supply Power Calculation

Details: Accurate calculation of supply power is crucial for amplifier design, power efficiency analysis, and ensuring proper power delivery to output stages in electronic circuits.

4. Using the Calculator

Tips: Enter supply voltage in volts and input bias current in amperes. Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is Supply Voltage?
A: Supply Voltage is defined as the bias voltage applied to the op amp for Q2 (transistor 2) pin. It is also defined as voltage at collector.

Q2: What is Input Bias Current?
A: Input Bias Current is defined as the average of input current in the operational amplifier, denoted as IB.

Q3: Why is there a factor of 2 in the formula?
A: The factor of 2 accounts for the symmetrical nature of the output stage in many amplifier designs where both positive and negative supply rails contribute to the total power.

Q4: What are typical values for Supply Voltage?
A: Supply voltage values vary depending on the amplifier design, but typically range from a few volts to several tens of volts in different applications.

Q5: How accurate is this calculation?
A: This calculation provides a theoretical maximum supply power. Actual power may vary due to circuit efficiency, component tolerances, and other factors.