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600W Audio Amplifier
- Izhar Fareed
- http://www.extremecircuits.net
- izhar@gmx.us
- 56.492 Views
- medium
- Non tested
- 0 Likes
Description
The circuit is based around {LM4702} manufactured by NATIONAL semiconductors & {MJ11029-MJ11028} by ON semiconductors It is a high fidelity audio power amplifier. Designed for demanding consumer and pro-audio applications. You can also use this circuit with AV receivers, Audiophile power amps, Pro Audio High voltage industrial applications etc Amplifier output power maybe scaled by changing the supply voltage and number of output devices. The circuit includes thermal shutdown circuitry that activates when the die temperature exceeds 150°c. CIRCUITs mute function, when activated, mutes the input drive signal and forces the amplifier output to a quiescent state.
Power
Maximum Output power @ 8ohms : 300watt
Absolute max power supply voltage :±38V to ±40V
Recommended power supply voltage :±30V to ±35V
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nice, simple, clear and a well presented schematic diagram.
i’ll try this one, thanks
hi rober, is the amp okey?
just wondering do you need to use highpowerresistors? so yes which ones?
ILL TRY THIS ONE TOO.
It seems that 400uf, 400v caps is not available. Can I use 400uf, 450v or 2-200uf in parallel? Can you tell me what wattages and voltages of resistors and capacitors to adopt. especially in the output stages. Is there any downloadable PCB for this project? Where can I find 5v for the mute circuitry? Thaks.
hi guys! Could anybody tells me how much current this amp need?
For 100W output you need a transformer that can supply 3.5-4A.
I want to make this is it work clearly…
300W per channel with ±40V power supply and 8ohm speakers, how is it possible? 40*40/8 = 200, and we all know that real figures are way below this absolute theoretical limit.
Delta between -40 and +40 is 80 and not 40…