Non-Inverting AC Power Amplifier Circuit Diagram

Introduction

Circuit Diagram of Non-Inverting AC Power Amplifier using MC1538R and MC1556G ICs

An amplifier is a circuit that amplifies or increases the amplitude of the input signal, thereby increasing the output signal’s power. Amplifiers are widely used in audio systems, instrumentation, and communication devices, among other applications. An AC amplifier or AC power amplifier amplifies the AC input signal’s power, allowing it to drive a load with a higher power. In this article, we will discuss the circuit diagram of a non-inverting AC power amplifier using MC1538R and MC1556G ICs.

MC1538R and MC1556G ICs

MC1538R and MC1556G are dual-operational amplifiers designed for use in analog and digital circuits. They are low-cost, general-purpose devices that can be used in various applications, including amplifiers, oscillators, and active filters. These ICs are characterized by high input impedance, low output impedance, and high gain-bandwidth products. They can also operate in a wide range of supply voltages, making them suitable for battery-powered applications.

Circuit Diagram

of Non-Inverting AC Power

The input signal is applied to the non-inverting input terminal of the operational amplifier (OP-AMP) MC1538R. The feedback resistor (RF) is connected between the output terminal of the OP-AMP and the inverting input terminal. The resistor (R1) and capacitor (C1) are connected in parallel between the inverting input terminal and ground to set the input impedance and frequency response of the amplifier.

Non-Inverting AC Power Amplifier Circuit Diagram

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A non-inverting AC power amplifier amplifies the input signal without inverting its phase. The basic circuit diagram of a non-inverting AC power amplifier using MC1538R and MC1556G ICs is shown below.

Working Explanation

of Non-Inverting AC Power

The output of the first OP-AMP (MC1538R) is fed to the input of the second OP-AMP (MC1556G). The feedback resistor (RF1) and load resistor (RL) are connected between the output terminal of the second OP-AMP and the inverting input terminal to set the gain and output impedance of the amplifier.

The gain of the non-inverting AC power amplifier is given by the following equation:

Gain = (1 + RF/R1) * (RF1/RL)

The amplitude of the output signal is determined by the gain of the amplifier and the amplitude of the input signal.

Applications

The non-inverting AC power amplifier using MC1538R and MC1556G ICs can be used in various applications, including audio amplifiers, power supplies, and instrumentation circuits. They are suitable for driving speakers, motors, and other high-power loads.

Conclusion

In conclusion, the non-inverting AC power amplifier using MC1538R and MC1556G ICs is an essential circuit for amplifying AC input signals with high power. This circuit provides high gain, low output impedance, and high input impedance, making it suitable for various applications. It is an ideal circuit for audio systems, instrumentation, and communication devices, among other applications.