This is a stereo audio amplifier circuit that provides 12W output power on each audio channel. This simple circuit is built on a single integrated circuit of TDA1521 / TDA1521Q, and only supported by few external components.
12W Stereo Amplifier Circuit Diagram
TDA1521/TDA1521Q is a dual high-fidelity audio amplifier encapsulated in a plastic 9-leads. The device is specially designed for power supply applications (eg, stereo TV and radio).
TDA1521/TDA1521Q features: Requires very few external components Low offset voltage between output and ground Input muted during power-on and off (no switch-on or switch-off clicks) Hi-fi according to IEC 268 and DIN 45500 Excellent gain balance between channels Short-circuit-proof Thermally protected This hi-fi stereo power amplifier is designed for mains fed applications. The circuit is designed for both symmetrical and asymmetrical power supply systems. An output power of 2 x 12 watts (THD = 0,5%) can be delivered into an 8 W load with a symmetrical power supply of ± 16 V.