Posts Tagged ‘Power-Amp-MOSFET’

140W IGB power amplifier HIFI

As collect power amplifier hifi circuit come to many the circuit. Today I begs for to advise the circuit that uses IGB be important equipment. And still give tall drive arrives at 140W interesting good. This circuit still very bias keep well be amp class AB. At power shape the loud sound is excellent. Use power supply model Amp OCL the general by use Voltage +43V GND -43V. And should use the size current 5Amp sizes go up then give enough tall usual this circuit uses 8ohm loudspeakers s have are having about 120-145Watt. when see the circuit may inappropriate for a novice. If you will build should are careful specially request enjoy have. Power amp HIFI good listen please sir.

Class-A MOSFET Amplifier by 2SK1058

This is simple Class-A MOSFET Amplifier, used mosfet 2SK1058 in circuit.
It is easy to make, Must use supply volte 24V at high current. read more

I am using this Class A Amplifier with a 12AU7 based valve preamp. It produces the most purest sound. I have no idea of distortion levels etc. but it has a very fine grain and delicately textured quality. With only one watt of output efficient speakers must be used. Bass is better than the design predicts and the amp drives my 12″ 63L based 3-way speakers with ease.

Read More Source: http://diyaudioprojects.com/Solid/ZCA/ZCA.htm Thank you.

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Simple Audio Power Amplifier 60W by K1058, J162
Power Amplifier MOSFET HI-FI 300W by 2SK1058, 2SJ162
24 Watt Class A Amplifier by 2N3055
Power Amplifier Class A 25W

Class A Power Amplifier by IRF530N+78L05

This is the best design I have came up so far!
I use two 6x6x4cm heatsinks per channel. Power supply is unregulated (just transformer, diode bridge and capacitors) but I cannot hear anything even when I put my ear within few centimeters of the loudspeaker. Opamp has very good power supply rejection ratio. I’ve tried to keep everything as simple as possible and basically LM317 would be just one extra opamp… If you are looking for better sound, get separate regulated low power supply just for the U1 opamp, something like +-15V at 100-200 mA.
I have also used one LM7805 to get bias for both channels – you may want to use two separate 7805 in a final amp to get better channel separation. R2 pot is anything from 500 to 50k. I have used 22k.

Read More Source:

http://www.geocities.com/leobodnar/audio_amplifiers.html

Thank you.