Simple Current Feedback Power Amplifier
Figure 1 shows the circuit. A major change from all of the designs from that era is the speaker coupling capacitor - 1000uF (for a -3dB of 20Hz and a 8 Ohm load...
60-100W Hi-Fi Power Amplifier
The output devices are MJL4281A (NPN) and MJL4302A (PNP), and feature high bandwidth, excellent SOA (safe operating area), high linearity and high gain. Driver ...
25W Class-A Hi-Fi Power Amplifier
The basis for this amplifier has been around now for several years as Project 3A, and requires only relatively small modifications to be able to operate in Clas...
Opamp Based Power Amplifier
The amplifier is based on the commonly used class-AB complementary power amplifier with compound pair output transistors. The system uses a TL074 quad opamp to ...
Class-D Audio Power Amplifier
The first application has to be a stereo power amp, since that`s what I built using two prototype modules. The reasons for this choice are twofold ... a good hi...
GainClone Amplifier
The GainClone idea seem to have taken off in a fairly big way. There are some good reasons for this, and I found myself in the position where SWMBO (she who mus...
Subwoofer Amp
The fins were added to a simple flat aluminium panel, and are made from 20 x 20 x 3mm aluminium angle. Their purpose is threefold - they improve the performance...
1,500W / 4 Ohms Power Amplifier
Capable of 2kW peak and a minimum of 1.5kW continuous, it has to be said that this amplifier will blow up any speaker connected to it. Regardless of the claimed...
A Really Simple Power Amplifier
The amp was called "El Cheapo 2-30", and was rated at a maximum of 30W per channel into 16 Ohms. It used a single regulated power supply and capacitor coupled s...
50 Watt Amplifier
This is a handy, easy to build general purpose 50 watt amp. The amp has an input for a radio, TV, stereo or other line level device. It also has a phono input f...
2 x 220W RMS Audio Amplifier
This amplifier is so high quality that it would be understatement to speak HIFI amplifier. HIFI-confirmed-Finland the frequency response must be direct and dist...
8 watt Audio Amplifier
An eight watt amplifier based on the LM383 power audio amplifier ic. It`s advised that you use this ic with a suitable heatsink....
8 Watt Audio Amplifier
Here is the schematic for an 8 watt audio amp. This amp can be used as a simple booster, the heart of a more complicated amplifier or used as a guitar amp. The ...