Showing posts with label LM1875. Show all posts
Showing posts with label LM1875. Show all posts

Circuit 20 WATT AUDIO POWER AMPLIFIER WITH LM1875 Schematics

20 WATT AUDIO POWER AMPLIFIER WITH LM1875
The LM1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications.
The LM1875 delivers 20 watts into a 4Ω or 8Ω load on ±25V supplies. Using an 8 load and ±30V supplies, over 30 watts of power may be delivered. The amplifier is designed to operate with a minimum of external components. Device overload protection consists of both internal current limit and thermal shutdown.
The LM1875 design takes advantage of advanced circuit techniques and processing to achieve extremely low distortion levels even at high output power levels. Other outstanding features include high gain, fast slew rate and a wide power bandwidth, large output voltage swing, high current capability, and a very wide supply range. The amplifier is internally compensated and stable for gains of 10 or greater.
THIS IS THE PICTURE BELONGS TO THE WEBSITE : http://electronic-schematic-diagram.blogspot.com
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Circuit 50 WATT HI-FI POWER AMPLIFIER Schematics


50 WATT HI-FI POWER AMPLIFIER

The LM1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications.
The LM1875 delivers 20 watts into a 4Ω or 8Ω load on ±25V supplies. Using an 8Ω load and ±30V supplies, over 30 watts of power may be delivered. The amplifier is designed to operate with a minimum of external components. Device overload protection consists of both internal current limit and thermal shutdown.
The LM1875 design takes advantage of advanced circuit techniques and processing to achieve extremely low distortion levels even at high output power levels. Other outstanding features include high gain, fast slew rate and a wide power bandwidth, large output voltage swing, high current capability, and a very wide supply range. The amplifier is internally compensated and stable for gains of 10 or greater.
This circuit diagram 50Watt Hi-Fi Power Amplifier based on LM1875 ICs and 2SA19432SC5200 bridge transistors. It has good input sensitivity, low distortion, good operating stability and full protection against overloads and output short-circuits. It can be used as a booster amplifier for existing small systems or to drive a second pair of speakers besides the ones already connected to the system. The board needs a symmetrical power supply of ±18V – 25V dc/4A and can be connected to 8 or 4 Ohm speakers. Large heat sink is required for this circuit. Diagram shown below indicates only the left channel. Make two circuits for for stereo version.

THIS IS THE PICTURE BELONGS TO THE WEBSITE : http://elec-circuits.blogspot.com
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