Circuit knowledge

Showing posts with label high. 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

Monday, October 27, 2014

300W High Power Amplifier

This high power amplifier circuit with transistor was designed to provide a manipulate in lieu of the otherwise useless TO3 power transistors with the purpose of many hobbyists experience at home their throw out megabucks. With upright construction the module is gifted of tall quality performance and is rated to 300 watts into a 4 ohm load depending on power supply. With the driver and output transistors specified it is some degree of to DC rails of +/- 70 volts.

Circuit Diagram

300W High Power Amplifier PCB layout

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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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.

Thursday, August 14, 2014

LM3886 High Performance Audio Power Amplifier

Audio Power Amplifier is an important part in sound reproduction ina sound system. Audio Power Amplifier with this power IC LM 3886Audio Power Amplifier is a highly capable and able to produce68 Watt power avg. 4Ohm load and capable of producing power 38 Watt8Ohm load.