LM4780 Audio Power Amplifier Project

The power amplifier project obtained its A4 name due to the four separate power amplifiers contained in this unit which offers great flexibility using different modes of operation.

Hi-Fi MOSFET Amplifier with 100W Output

The project was built around the Hitachi lateral power MOSFETs to create high fidelity Class AB amplifier.

Mint Box Enclosed MP3 Player

The MP3 player project utilizes a PIC18LF452 microcontroller which sends data to STA013 MP3 decoder chip and handles flash card interface.

Stylophone Synthesizer with Mini Controller

The project shows how the Mini Controller is made to interface with any synthesizer with 1V/octave input.

Amplifier Kit Using K-502 Tube

The K-502 tube amplifier kit was designed as a piece of pine that can be mounted on an amplifier although it would be more suitable to put it in a box.

OPA134 and PGA2310 Based 5.1 Volume Control

The project utilizes OPA134, PGA2310, black gate, and polypropylene capacitors to produce a 6-channel 5.1 volume control.