Placa de Alimentação de Comutação Amplificador de Potência Digital de Alta Qualidade 500w 45v 38v 600w ± 71v 58v

Opção de Compra e tempo de entrega

1. The power supply board is equipped with over-voltage, over-current, short-circuit, and mid-point voltage offset protection of the horn, and can be connected to two points A and B on the normally open temperature switch to achieve over-temperature protection. 2. 30A large electric output terminal block, wide pitch, bid farewell to the embarrassment of crowding. 3. Built-in power amplifier midpoint offset speaker protection function. 4. External resonant discrete inductors have better heat dissipation than integrated methods. 5. The transformer uses a total of 10 0.6mm copper wires and outputs in parallel to reduce internal resistance. 6. Up to 50A high current MOS switch tube, low internal resistance, low heat generation, high efficiency, and strong load capacity. 7. 20A low dropout Schottky rectifier, and output in parallel with common cathode. 8. Board size: 15×12×6.3cm.

Positive and negative 38v output can be connected to a class A power amplifier, such as PASSA3, A5, with short circuit and overcurrent protection, and power amplifier mid-point voltage protection, which can save the speaker protection board, and the power amplifier mid-point voltage abnormally shuts off the output voltage. The circuit structure is 3525 push IR2110, the switch tube uses 50A IRG4PC50W.

The output positive and negative voltage is 71V. Half-bridge open loop structure, the circuit refers to the circuit of Yamaha high-power professional power amplifier, with short circuit, over current, over voltage protection, and power amplifier mid-point voltage speaker protection, which can save the power amplifier speaker protection board and simplify the general use of the relay external protection board The trouble will not affect the sound due to the poor contact oxidation of the contacts after the relay has been used for many years. The midpoint voltage of the power amplifier abnormally shuts off the output voltage. (Perhaps some people will psychologically think that the protection horn without relay is not reliable enough. Here I want to explain that the protection circuit input detection is the same as the ordinary relay protection input detection circuit. The difference is through Optical coupling controls the power off to protect the horn, while ordinary relays turn off the power supply of the relay to protect the horn. This will also cause a problem, because often when the power amplifier is damaged it will lead to the output of direct current, and when the power amplifier is damaged, the general power The tube will short-circuit and cause a very large current, usually even the copper foil on the circuit board of the power amplifier will burn out, causing irreparable loss, and the input is independent of the two channels, which will not affect the crosstalk of the left and right channels. It will not affect the sound quality. A normally open temperature switch can be connected to the two solder joints on the board A and B to achieve temperature protection, and all the necessary protection functions are available. The power board uses 2 original Japanese chemical 1000U after 220V rectification Capacitor, add 150U small capacitor (note that the capacitor capacity is small here, insufficient energy storage will make the bass weak when the power is amplified and the bass will not dive deep), the switch tube is a high-power TO-247 packaged IR manufacturer IRG4PC50W high-current IGBT Power tube (not comparable to the switch tube in the power package of TO-220, the cost is even more 2-3 times, the output terminal block uses a 30A high-current copper material terminal block with a 10MM pitch, (except for the screw wire). , Ground and negative poles each occupy two digits for a total of 6 digits.

The positive and negative voltage is 58V, the actual power is measured with pictures. It is not comparable to those with exaggerated and disorderly standards of 800 and 1000W. I am not afraid of not knowing the goods, most afraid of comparing goods. The cold resistance of the electric furnace wire is about 17 ohms. 6A, the current stabilizes at 5.6A after heating. Those power boards with exaggerated power dare not measure the power, either protect or burn the board. Please compare the materials carefully. The board is 15 in length, 11.8 in width, and about 6.3CM in height. The output voltage is about Positive and negative 58V, half-bridge open loop structure, the instantaneous output current can reach 2-3 times the normal current, and the voltage output is about 58V plus or minus. The circuit structure refers to the circuit of Yamaha’s high-power professional power amplifier power supply, with short circuit, overcurrent, and overcurrent. Voltage protection, as well as power amplifier mid-point voltage horn protection, can omit the power amplifier horn protection board, and the power amplifier mid-point voltage abnormally shuts off the output voltage. Externally connecting a normally open temperature switch from the two solder points A and B on the board can also achieve temperature protection, and all the necessary protection functions are available. The circuit structure is 3525 push IR2110, the switch tube is 50A IRG4PC50U, (note that it is a large-volume TO-247 packaged high-power tube, not the kind of TO-220 small-volume medium-power packaged tube comparable) . The IR2153 or IR2155 is a cheap solution that directly pushes the field tube. It is necessary to know that the driving ability of the IR2155 is very weak, and can only drive the tube of about 10A, such as the small current tube such as IRF740, but for large current The tens of amp field tube is powerless because of the relatively large input capacitance.

1. Placa de Alimentação de Comutação Amplificador de – Nome da Marca : Supo

2. Cheap Amplificador – Potência Máxima por Canal : Nenhuma Energia

3. Amplificador – Origem : cn Origem

4. Placa de Alimentação de Comutação Amplificador de – Certificado : None

5. Cheap Amplificador – Nome da Marca : Supo

6. Amplificador – Potência Máxima por Canal : Nenhuma Energia

7. Placa de Alimentação de Comutação Amplificador de – Origem : cn Origem

8. Cheap Amplificador – Certificado : None

9. Amplificador – Nome da Marca : Supo

Finished machine display (for reference only):

10. Placa de Alimentação de Comutação Amplificador de – Potência Máxima por Canal : Nenhuma Energia