The BC548 is a NPN bipolar junction transistor general-purpose commonly used in designs in hobby electronics magazines where a general-purpose transistor is required. It is low in cost and widely available. DOWNLOAD DATASHEET BC548
Audio Stereo Power Amp Circuit 50W This is a 50 Watt Audio AF power amplifier (Split Power Supply) circuit based single Thick Film Hybrid IC STK4036II. Use heatsink to prevent overheating on the IC.