Design and Construction of 30.25 Watts Audio Power Amplifier

Abstract

Audio power amplifiers are electronic circuit that boost or strengthens an input signal by providing amplification. The nature of the signal could be any of the following: voltage, current or power. In the present-day era, most, small and medium size electronic devices used integrated circuit chip to perform audio power amplification. The paper designed and constructed 30.25 W audio power amplifier using TDA2040 module from the circuit digest. The simulation of the circuit was carried out using proteous 8 professional. The power supply unit was constructed using 12V-0-12V center-tap step-down transformer and thereafter the amplifier. The results of the device showed that the amplifier exhibited low distortion. The output power and efficiency were found to be 30.25 watts 78.5 % respectively. Furthermore, the agreement between the simulated and experimental result confirms the good performance of the amplifier.