Here is the 250W RMS power amplifier circuit called Legend-Stage Master. This is the previous version of Legend-Stage Master MK2. The circuit is based on power MOSFET and give a great output performance for indoor audio sound system.
50W Hi-Fi Power Audio Amplifier using TDA7294 Circuit Manual
This is the very simple circuit diagram of 150W power amplifier. The circuit is easy enough to built without PCB. The power output range is about 100-150W depends to the power supply and the Darlington’s you use for the amplifier. Heatsink is a must since the final transistor is going to hot when the amplifier… Read More »
This is the 100 Watt power amplifier circuit based power amp chip LM3886. Single chip of LM3886 is able to generate power output up to 68W. In this 100W power amplifier circuit, the two of LM3886 are paralled to gain more powerful amplifier output. This amplifier can deliver about 50W into a 8-ohm speaker and… Read More »
Here is a Hi-Fi power audio amplifier circuit, built with a power IC TDA2050. This circuit will produce a power output up to 32watt. With good sound quality, high power and very low distortion feature, this circuit will be very suitable for simple and cheap audio systems. TDA2050 Amplifier Schematic diagram: TDA2050 Amplifier PCB Design:
This is the circuit diagram of 50W power amplifier based on audio power amplifier IC STK-1050. Symmetrical power supply used to operate this circuit with maximum voltage rated at 53V and recommended supply is 36V. This is a single channel (mono) amplifier circuit, for stereo audio system, you should build two similar circuit. Power supply with… Read More »
Here the 50W AF power amplifier circuit powered with single IC STK4036II. This circuit will deliver 50W single channel output. The amplifier circuit uses symmetrical (dual polarity) power suppy. Recommended power supply voltage is +/- 35VDC. Use heatsink to prevent overheating on the IC and maximize the STK4036II performance.
Here the another audio amplifier circuit with single power IC from Phillips, TDA1514A. This is a hi-fi power amplifier circuit with 50W power output. A power IC delivers 50W single power output, then you need to build two similar circuit for stereo application. The TDA1514A integrated circuit is a hi-fi power amplifier for use as… Read More »
This is a great audio amplifier circuit based on single power IC TDA7294. TDA7294 is intended for use as a high quality audio class AB amplifier in hi-fi applications. It has very low noise and distortion, wide bandwidth and good output current capability, enabling it to supply high power into both 4Ω and 8Ω loads.… Read More »