TDA7297 pure final stage power amplifier board finished board, plus anti-reverse circuit, effectively prevent chip burnout caused by power supply reverse, component re-layout, lead hole spacing is standard 3.96mm, easy for direct lead soldering or on board Standard terminal block. This is a finished board that has passed the welding test and will be humming when it is properly connected.
DIY must see: Pro recently there are very few customers who say that the board has noise, we have the following reasons for analysis: 1, using the mains rectification power supply, 2, no potentiometer. Solution: 1, must add potentiometer, if you do not add potentiometer, you must use two 47K resistors respectively connected to the left and right channel audio input. 2. If using the mains step-down rectification power supply, the 100uf filter capacitor must be replaced by 1000uf or more (the battery supply does not have to be changed). Some customers say that the heat is big, most of them are not added heat sink or the radiator used is too small, you must add a radiator, the recommended radiator size 100x30x45mm (length x width x height), this part does not contain a radiator .
Power supply voltage: DC DC 9V-15V Current 2A Recommended 12V voltage Static current: about 25mA (not connected to the sound source, connected to 8Ω speaker, 12V power supply) Output impedance: 4Ω-8Ω Output power: 15W+15W Product Size: Length 34MM*Width 29MM* Height 25MM