The Two-Channel Dual Xpa2100 Mosfet Amplifier Provides No-Holds-Barred Mobile Audio Output With 300 Watts Of Dynamic Power Output (4 Ohms, Bridged).
This Stylish Red-And-Black Amplifier Features A Pwm Mosfet Power Supply And An Extruded Aluminum Heatsink For Stable Operation. It Offers 50 Watts Of Rms Power Per Channel At 4 Ohms And 75 Watts Per Channel At 2 Ohms. continue reading…

2N3055 is a silicon power transistor used mostly in amplifier and power supply circuits but it is designed for general–purpose switching and amplifier applications. 2N3055 transistor is packed in a TO-3 can, the maximum power rating is 115W, voltage 60V and 15 amp max with a beta gain of 20 to 70 at a collector current of 4A. continue reading…

This audio amplifier is simple, small and easy to build. This mini amplifier can be a universal audio amplifier. It is built with an 741 IC, 2 transistors 2N1711 (2N1613, 2N3901, 2N3110) and 2N2904 (2N2905). With P1 you adjust the volume level and P2 controls the tone and can suppress high frequencies up to 20 dB. The output power in around 2 watts, input sensitivity is 100mV and at a power supply of 16V to 24V the current consumption is around 150mA. continue reading…

The TDA2030 amplifier circuit is a monolithic IC intended for use as a low frequency class AB amplifier. TDA2030 provides 14W output power (distorsions = 0.5%) at 14V/4Ω and at ± 14V or 28V is 12W/4Ω or 8W/8Ω. TheTDA2030 provides high output current and has very low harmonic and cross-over distortion which made it one of the most used IC in audio amplifiers designs.
TDA2030 can be connected in several ways to deliver different power ratings and characteristics, so we start with the simplest circuit design. continue reading…