Soft Start for Loudspeaker with DC Protection

The circuit was designed for the purpose of providing protection to the loudspeaker and also incorporating soft touch technology for powering on.

170W Audio Power Amplifier Circuit by NE5534

The circuit aims to produce a power amplifier with the use of an operational amplifier NE5534 at its input compared to classic designs which use differential amplifiers.

Peak Indicator for Audio Signal

The circuit is designed to produce an indicator that will show the peak level of audio signal as it exceeds the prescribed limit.

TDA1516Q Driven 2x18W Power Amplifier

The circuit was designed with two integrated circuit of TDA1516Q having 18 W each to create a power amplifier that will be used to drive amplifiers in car radios.

Class A-Based Headphone Amplifier

The design of the circuit is based on the operation of a class A amplifier for the purpose of driving a pair of headphones using a mini amplifier.

Modular Audio Mixer with Multiple Input Channels

The circuit was designed to create an audio mixer that can be assembled in modules while providing 6 or more input channels.