TDA7297 Power Amplifier Board Parts DC 12V Pure Rear Stage 2.0 Dual Channel 15W+15W Electronic DIY KitItem NO.: SFT-9718 DIY KIT

DIY Kit Of TDA7297 Digital Power Amplifier Board

Product Information:

The core of the power amplifier board is the original TDA7297 dual channel power amplifier chip. The power supply is designed as DC power supply, which can be directly supplied by a 12V battery. The voltage range is 9-15V, the recommended voltage is 12V, the current is more than 2A, the output power is up to 15W+15W, the peak power is 30W+30W, and the volume is 34x29x25mm (length x width x height). The volume is very small, but the sound is super shocking. It is suitable for any occasion.

The new version of TDA7297 pure rear power amplifier board is equipped with anti reverse connection circuit, which can effectively prevent the chip from burning due to the reverse connection of the power supply and the components from being rearranged. The lead hole spacing is standard 3.96mm, which is convenient for direct lead welding or adding standard terminal blocks on the board. The included components are shown in the finished product drawing, and they need to be welded by themselves.

Advantages Of This Board:

There is no current impact when the machine is turned on, with high signal-to-noise ratio. Under no input state, the ear can hardly hear the noise near the speaker; The sound quality is excellent -- the high pitched voice is fine, soft, transparent, without obvious rashness, and the low pitched voice is solid, full, powerful, and can be opened and closed freely. Recently, I saw that a few customers said that the heat generation was high, which may be the reason why there was no radiator or the radiator was small. I warned customers that this panel needs to be equipped with a radiator of appropriate size (it should be large rather than small)

DIY Must See:

Recently, few customers said that the board was noisy. We analyzed the following reasons: 1. It was powered by mains rectifier power supply; 2. It was not equipped with potentiometer. Solution: 1. A potentiometer must be added. If no potentiometer is added, two 47K resistors must be connected in parallel to the left and right audio input terminals. 2. If mains voltage reduction rectifier is used for power supply, the filter capacitor of 100uf must be replaced with more than 1000uf (battery power supply is not necessary). Some customers also said that the heat is too high, most of which is due to the fact that there is no radiator or the radiator used is too small. It is necessary to add a radiator. The recommended radiator size is 100x30x45mm (length x width x height). This spare part does not include a radiator.