Portable Headphones Amplifier
Can be directly connected to CD players, tuners and tape recorders.
Tested with several headphone models of different impedance: 32, 100, 245, 300, 600 &...
10 Watt Guitar Amplifier
The aim of this design is to reproduce a Combo amplifier of the type very common in the `sixties and the `seventies of the past century. It is well suited as a ...
3 Transistor Headphone Amplifier
This is an improved version of headphone amplifier I`ve built many years ago. I wanted so much to share it with you because this simple circuit has done a great...
All transistor microphone pre-amplifier
The microphone has high sensitivity in the audio range, but in the ultrasonic range, the sensitivity decreases rapidly. The receiver is very sensitive. To preve...
10 watt amplifier for 18MHz
This project and your efforts will provide you with a 0.55...3 watt input to easily 10 watt output. The two linear amplifiers are ment for use with QRP SSB/CW/F...
Low impedance microphone amp
The circuit is a microphone amplifier for use with low impedance (~200 ohm) microphones. It will work with stabilized voltages between 9-30VDC. If you don`t bui...
Portable Mic Preamplifier
This circuit is mainly intended to provide common home stereo amplifiers with a microphone input.
This circuit is mainly intended to provide common home stere...
8 Watt Amplifier
Although the TDA2030 can deliver 20 watts of output power, I deliberately reduced the output power to about 8 watts to supply 10 watt speakers. Input sensitivi...
60W Guitar Amplifier
This design adopts a well established circuit topology for the power amplifier, using a single-rail supply of about 60V and capacitor-coupling for the speaker(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....
300W Subwoofer Power Amplifier
The amplifier can be assembled by a reasonably experienced hobbyist in about three hours. The metalwork will take somewhat longer, and this is especially true f...
25 Watt MosFet Audio Amplifier
Can be directly connected to CD players, tuners and tape recorders. Simply add a 10K Log potentiometer (dual gang for stereo) and a switch to cope with the vari...
22 Watt Stereo Amplifier
This circuit is very basic to build and puts out great power for your car or home. Keep all leads as short as possible....
20W Class-A Amplifier
This amp uses the basic circuitry of the 60W power amp (see Index), but modified for true Class-A operation - it should be pretty nice! This amp has been built ...
2x20 Watt Stereo Power Amplifier
This project is based almost directly on the typical application circuit in the National Semiconductor specification sheet. You can also use the TDA2050 (from S...
18W Audio Amplifier
High Quality very simple unit -- No need for a preamplifier
Can be directly connected to CD players, tuners and tape recorders.
Don`t exceed 23 + 23V sup...
15 Watt Amplifier
You can use this circuit with any walkman or CD player since it is designed to take a standard 500mv RMS signal. A 15 watt amplifier made using discrete compone...
100W Audio Amplifier
The circuit works from a symmetrical 40 VDC power supply and draws a maximum current of 2.6 A. The input circuit of the amplifier is a differential amplifie...
100W Guitar Amplifier 2
The schematic has been modified slightly to improve the tone control performance (04 Jan 2002). A new schematic is now on line - the differences are relatively ...
100W Guitar Amplifier
The amp is rated at 100W into a 4 Ohms load, as this is typical of a "combo" type amp with two 8 Ohm speakers in parallel. Alternatively, you can run the amp in...