18w Audio Amplifier

This circuit combines two or more audio channels into a single channel (for example, converting stereo to mono). It is capable of mixing multiple channels while consuming minimal power. The schematic illustrates two inputs, but additional inputs can be...

The mixer consists of two transistor-based preamplifiers. The first one, designated as "Mike," provides high gain and is designed to work effectively with a standard dynamic microphone. The second preamplifier can be used to control audio input from a...

This is a simple cable TV amplifier using two transistors. The amplifier circuit is designed for cable TV systems utilizing 75 Ohm coaxial cables and is effective up to 150 MHz. Transistor T1 is responsible for amplification, providing up...

In recent years, following CD's introduction, vinyl recordings have almost disappeared. Nevertheless, a phono preamplifier is still useful for listening to old vinyl discs from a well-preserved collection. This simple but efficient circuit devised for cheap moving-magnet cartridges can...

Mark Harrington Audio Tracer. The audio input is fed into the first stage op-amp via C6, RV1, C4, and R4. The Mark Harrington Audio Tracer is a specialized audio processing circuit designed to enhance and analyze audio signals. At its...

Choosing direct current (DC) coupling instead of alternating current (AC) coupling can significantly reduce the noise associated with preamplifiers for a magnetic reading head, particularly at low frequencies. The LM1897 eliminates the need for the capacitor that typically AC...