873
FREE
circuits!

Audio amplifier circuit diagrams

pages:
Headphone Amplifier
Headphone Amplifier
October 3, 2010

Headphone Amplifier [more]

Portable 9v Headphone Amplifier
Portable 9v Headphone Amplifier
October 3, 2010

The main requirement was to power the circuit by means of a common, PP3 (transistor radio) alkaline battery. So, implementing a low current drawing circuit was absolutely necessary, though preserving a High Quality performance. [more]

Spy Ear
Spy Ear
October 3, 2010

This light-weight gadget produces an adjustable gain on sounds picked up from the built-in high-sensitivity condenser microphone. So you can hear what you have been missing. With a 6V (4×1.5V) battery, it produces good results.... [more]


circuit from:http://www.extremecircuits.net/2010/05/spy-ear.html

Audio Power Amplifier 60W with TDA7294
Audio Power Amplifier 60W with TDA7294
August 7, 2010

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 voltage range and output current capability, enabling it... [more]

Stereo Power Amplifier 4W-8W with TDA2005
Stereo Power Amplifier 4W-8W with TDA2005
August 7, 2010

This circuit [Fig.1] is a class AB stereo audio power amplifier designed by Quasar for quality hi-fi applications using a TDA2005 module. It is easy to construct and has a minimum of external components. The... [more]

Power amplifier 2X5W with TDA1516Q
Power amplifier 2X5W with TDA1516Q
August 6, 2010

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 0.5%. [more]

Power amplifier for Loudspeaker 6.5W 8R
Power amplifier for Loudspeaker 6.5W 8R
August 6, 2010

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 loudspeaker. [more]

Power Amlifier 40W Class A
Power Amlifier 40W Class A
August 6, 2010

This is an audio power amplifier, with its final stage giving 40 W/8 Ω at Class A. The power transistors, are always ON , allowing a very high current to flow. [more]

Power amplifier 60W/8Ω
Power amplifier 60W/8Ω
August 6, 2010

This circuit was designed and manufactured the '80's. From then it works without problem. It does not present any particular constructional problem, beyond known: the attention in the provided force of power supply - choice... [more]

Power amp 100W with V-MosFet
Power amp 100W with V-MosFet
August 6, 2010

One still designing that it uses in the exit transistor of technology V-mosfet. This transistors to us offer a lot of virtues concerning the simple bipolar transistors, as high speeds, thermic stability, low distortion etc. [more]



pages: