Using LM4780 audio amplifier circuit can be designed a very simple 120 watt amplifier high power stereo amp( 60 watt per channel ) .
This LM4780 120 watt amplifier stereo circuit is capable of typically delivering 60W per channel of continuous average output power into an 8 ohms load with less than 0.5% THD+N from 20Hz - 20kHz.
The LM4780 is fully protected utilizing National's Self Peak Instantaneous Temperature (°Ke) (SPiKeTM) protection circuitry.
This TDA2030 200 watt amp low cost audio power amplifier can deliver high output audio power up to 200 watts on a 2 – 4 ohms load impedance . This 200 watt amp high power audio amplifier is build around the TDA2030 audio amplifier IC which normally can deliver up to 14 watts on a 4 ohm load , but if is used in bridge mode an if we use some cheap power transistors can be created a 200 watts high power audio amplifier .
All transistors and the ICs must be mounted on a heatsink to prevent over temperature damage . For small value resistors ( 1 ohm ,2.2 ohms ) use 2 -5 watts resistors .
The design of this TDA1515 audio power amplifier is very simple and offers a maximum of 24 watts output power on a 2 ohms load impedance ( bridge mode connections ) . The TDA1515 audio IC power amplifier is used in many audio applications like PC speaker or TV , car radio applications .