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Understanding how to calculate voltage gain in analog amplifier circuits is essential for designing and analyzing electronic systems. This article provides a clear, step-by-step approach to determine voltage gain accurately.
What is Voltage Gain?
Voltage gain is the ratio of the output voltage to the input voltage in an amplifier circuit. It indicates how much the circuit amplifies the input signal.
Basic Formula for Voltage Gain
The fundamental formula for voltage gain (Av) is:
Av = Vout / Vin
Step-by-Step Calculation
Follow these steps to calculate voltage gain in an amplifier circuit:
- Identify the input voltage (Vin) applied to the circuit.
- Measure or determine the output voltage (Vout) across the load or output terminals.
- Apply the formula: Av = Vout / Vin.
Example Calculation
If an amplifier has an input voltage of 0.01 V and an output voltage of 2 V, the voltage gain is:
Av = 2 V / 0.01 V = 200