18watt Audio Amplifier circuit
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18W + 18W Stereo Hi-Fi Audio Amplifier (TDA2030) circuit
2 x 18W Hi-Fi Stereo Power Amplifier based around two TDA2030 ICs. It has good input sensitivity, low distortion, good operating stability and full protection a...
Improved 3 Transistor Audio Amp (80 milliwatt) circuit
This circuit is similar to the one above but uses positive feedback to get a little more amplitude to the speaker. I copied it from a small 5 transistor radio t...
Tube power amplifier 5W with EL84 circuit
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Tube Power Amplifier with EL34 - 35W circuit
It`s a classic designing of final amplifier 35 W, with two EL34 in push-pull, from the Siemens and Halske, with year of designing 24/3/1953 and code SV410/1. Th...
Audio Note Conquest Power amp with 300B circuit
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Headphone amplifier Class A circuit
Even if simple the circuit, plirej` all condition, regarding the distortion and the response of frequency. The resistance of entry is 250K and the load that can...
Headphone amplifier with TDA2004 circuit
A opamp medium power, used as amplifier of headphones with possibility drive low loads. It contains in a nutshell two amplifiers. The voltage gain, has been det...
Stereo Tube Amplifier circuit
The circuit is simple, yet is capable of excellent performance. I designed it specifically for use as an amplifier for the digital sound card in my computer. Au...
Collection of Little Bridged Power Amplifiers circuit
It is a little collection of amplifiers in bridge connection. The output power is low and they are for general use. They can be used with small active loudspeak...
FET 12W Audio Power Amplifier circuit
A small power amplifier, but with very good quality of sound. It combines a completed very good quality (NE5534), that has the possibility of control of low loa...
power amplifier 60w
This circuit was designed and manufactured the `80`s. From then it works without problem. It does not present any particular constructional problem, beyond know...
Power Amlifier 40W Class A circuit
This is an audio power amplifier, with its final stage giving 40 W/8 ? at Class A. The power transistors, are always ON, allowing a very high current to flow.....
Power amplifier for Loudspeaker 6.5W 8R circuit
The amplifier of circuit, use negative current feedback. So, the load current depends mainly from the input signal and no so much from the impedance of loudspea...
Power amplifier 2X5W with TDA1516Q circuit
A simple STEREO amplifier, with minimal external components. It use one only opamp., that is capable to give output power 2X5W in the 4 ohms, with distortion 0....
Audio Power Amplifier 60W with TDA7294 circuit
The TDA7294 amplifier module is a monolithic integrated circuit. It is intended for use as an audio class AB amplifier in hi-fi applications. It has a wide volt...
Headphone Amplifier circuit
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Motorola Hi-Fi power amplifier
This is a very simple, low cost, Hi-Fi quality power amplifier. You can build it 5 ways, like its shown in the table (from 20 W to 80 W RMS).....
Stereo Tube Amplifier
The circuit is simple, yet is capable of excellent performance. I designed it specifically for use as an amplifier for the digital sound card in my computer. Au...
10W Audio Amplifier with Bass-boost
This design is based on the 18 Watt Audio Amplifier, and was developed mainly to satisfy the requests of correspondents unable to locate the TLE2141C chip. It u...