TDA7294 200W High Power Audio AMP Amplifier Board DC24-40V Kits Mini Audio Amplifier DIY Kit Board

Features:1.Adopting high-quality power amplifier chip, model: TDA72942.The product adopts high-quality materials and has a long service life3.The product is loose and needs to be aembled by ones, ing it very suitable for DIY enthusiasts4.This is a high fidelity dual amplifier board5.200W power product with very stable performance

s:1. Audio signal input: dual audio signal input;2. Audio output: dual 100W+100W audio output;3. Circuit prince: 2-way TDA7294 amplification output;4. Working voltage: DC 24-40V5. Input impedance: 22K Output impedance: 4-86. specification: FR4 50X120X1.6MMTDA7294 Dual Amplifier Board Material List:ed power amplifier IC TDA7294:2 PCS1/4W 22K: 6 PCS1/4w 680:2 PCS1/4W 10K: 2 PCS1/4W 30K: 2 PCS1W 10R: 2PCS2W 10R: 2PCS 1N4148:2 PCSThin film 100NF: 4PCSThin film 10PF: 2PCSElectrolytic 22UF: 6PCSElectrolytic 47UF: 2PCSThin film capacitance 2.2UF: 2PCS (axial coupling capacitance)Inductance 5UH: 2PCS7.62 sockets, 2 positions, 3 positions, 1 PCS each5.0 Socket: 2PCSCircuit board double-sided FR4 50X120X1.6MM: 1PCS

Introduction to circuit princes:Dual TDA7294 amplification design, symmetrical design of left and right s, one point grounding, no current sound, no noise, dual output of 100W, with some improvements made to the circuit.1.The input port is connected in parallel with a 330P small . This method has two advantages: first, it can form a low-pa with R1, filter out some unneceary residual Super high frequency, e the sound smoother, and also reduce the burden of the amplifier. The second is to eliminate circuit s-excitation.2.A 10PF is connected in parallel to the feedback , ing the sound more nsparent.3.Use Bell networks and output inductors to prevent high-frequency s-excitation and compensate for the output.The above modifications, compared to many circuits, with a good power supply, can basically achieve over 99% performance of 7294. The voltage feedback is negative, and the performance is stable. Replacing different feedback s can modulate different tones, suitable for grinding machines.

Package include:Package 1: DIY loose parts X1Package 2: Finished module X1