TDA7294 Amplifier Board DIY Parts KIT 200W Audio Power Amplifier Board PCB Dual Channel HIFI
Product details
| Management number | 221445701 | Release Date | 2026/05/03 | List Price | US$13.00 | Model Number | 221445701 | ||
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PT-0010 TDA7294X2 POWER AMP Technical Specifications: 1. Audio signal input: Dual channel audio signal input; 2. Audio output: Dual channel 100W+100W audio output; 3. Circuit principle: Two TDA7294 amplification outputs; 4. Working voltage: DC+-24V --+-40V; 5. Input impedance: 22K 0HM Output impedance: 4-8 0HM 6. PCB specification: FR4 50X120X1.6MM Material list of TDA7294 dual channel amplifier board Power amplifier IC TDA72942PCS - brand new original 1/4W resistor 22K6 PCS 1/4W resistor 680 2PCS 1/4W resistor 10K 2PCS 1/4W resistor 30K 2PCS 1W resistor 10R 2PCS 2W resistor 10R 2PCS Diode 1N4148 2 PCS Thin film capacitor 100NF 4PCS Thin film capacitor 10PF 2PCS Electrolytic capacitor 22UF 6PCS Electrolytic capacitor 47UF 2PCS Thin film capacitor 2.2UF2PCS - axial coupling capacitor Inductance 5UH2PCS 7.62 sockets, 2 positions and 3 positions each with 1 PCS 5.0 socket 2PCS Circuit board double-sided FR4 50X120X1.6MM 1PCS Introduction to circuit principles: Dual channel TDA7294 amplification design, symmetrical design of left and right channels, one point grounding, no current sound, no noise, output dual 100W. Partial improvement compared to the original circuit. Please refer to the circuit diagram for details. 1. A 330P small capacitor is connected in parallel to the input port. This approach has two benefits: One is to form a low-pass with R1, filtering out unnecessary residual ultra-high frequencies, making the sound smoother and reducing the burden on the amplifier. Secondly, as mentioned above, it can eliminate circuit self-excitation. 2. Connect a 10PF capacitor in parallel with the feedback resistor for more transparent sound. 3. Use Bell networks and output inductors to prevent high-frequency self-excitation and compensate for the output. The above modifications, coupled with a good power supply, can basically achieve over 99% performance of 7294. With negative voltage feedback and stable performance, different feedback capacitors can be replaced to modulate different tones.
- Audio signal input: Dual channel audio signal input;
- Audio output: Dual channel 100W+100W audio output;
- Circuit principle: Two TDA7294 amplification outputs;
- Working voltage: DC+-24V --+-40V;
- Input impedance: 22K 0HM Output impedance: 4-8 0HM
- PCB specification: FR4 50X120X1.6MM
| Model | tuoluo604 TDA7294 |
|---|---|
| Voltage | 24 Volts (DC) |
| Brand Name | Jolooyo |
| Part Number | tuoluo604 TDA7294 |
| Manufacturer | Jolooyo |
| Output Power | 100 Watts |
| Material Type | Copper |
| Mounting Type | Surface Mount |
| Number of Channels | 2 |
| Included Components | 1 amp board |
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