Showing posts with label quality. Show all posts
Showing posts with label quality. Show all posts
Saturday, November 1, 2014
Powerful high quality amplifier
Nmos350 Mk2
This revised version yet to be built improves a few perfomance areas. I considered more complex ideas but this increased the component count and original idea of the amp would have been lost; that is a powerful high quality amplifier that used commonly available and cheap components.
- A LED as the voltage reference for the first stage constant current source tracks changes in temperature slightly better that than the old double diode setup.
- A cascode second stage makes it faster and more linear.
- Better clipping attributes
- The fuse has been shifted out of the voltage drive loop between the driver and output stages.
Nmos350 Mk2 Schematic
Saturday, September 6, 2014
High and quality audio power amplifier with MJ15024G and MJ15025G
Spesification of this amplifier is high enough , and require a lot of expense to make this super-power amplifier. In the transformer using 20A and manufactered / branded ERA , ERA trafo is one of the best transformer , in addition to the power amplifier as well as power supply adapter , regulator , stabilizer , charger , etc. Because copper is intact , a strong iron and did not issue a frequency so that when the amplifier is turned on , output sound amplifier no buzzing. So if you in choosing a transformer , do not hesitate to use the transformer branded ERA.
Above and below the picture is the end of the amplifier circuit, so-called booster amplifier. Picture above using 14 pairs of transistor MJ15025G and his partner MJ15024G . Transistor price range of $5 - $6 , has power output of 250W on each transistor , for more details , see datasheet of each transistor.
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| Click to view larger |
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| Installed transistor with resistor but still a mess |
Transistors MJ5025G and MJ15024G very fith with power amplifier 300 Watt subwoofer , 450 Watt , 600W , 750 Watt , 1050 Watt , 1200 Watt , and higher. The buffer and its driver using transistor not ic. For power schematic diagram can be found here.
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