Product description: This product is a bare board with danger of high-voltage circuits, and must be purchased by those who can use it For long-term high-power use, please add fan cooling. The power supply has overheating, overcurrent and short circuit protection. Overcurrent and short circuit protection are lock-up protection. The voltage of the main filter capacitor such as the AC power supply must be disconnected to 0V to restart. This power supply is a real LLC resonant power supply. The resonant circuit is a high-frequency sine wave, not an ordinary square wave switching power supply. It is very suitable for power amplifiers and has good effect. Since the switching power supply only stabilizes the main voltage, the current of the independent and auxiliary output must be less than the current of the main voltage output; for example, the current of the main voltage at that time is 10mA, and the auxiliary and independent can not carry loads above 10MA Parameter: Input voltage: AC200-240V Output voltage: main 80V; independent 12V; auxiliary +-12V Voltage regulation accuracy: main no-load 3%, with load 3% (when AC220V input) Output current: 80V/5.5A; independent 12V/0.5A; auxiliary +-12V/0.5A (with the main voltage for ground) (Auxiliary and independent are not regulated, the main voltage becomes lower and lower, used in occasions with low requirements, such as power supply to fans, etc.) Continuous power: 500W (continuous work at 25C ambient temperature, long-term 500W work requires fan cooling) Rated power: 880W (can work continuously for about 5 minutes at 25C ambient temperature) Instantaneous power: 1200W (power generated during dynamic signal impact, less than 100 milliseconds) Conversion efficiency: Max 95% Dimensions: length, width and height = 143*88*40mm The board is as follows, and the wiring diagram is as follows: Load test, the load is our IRS2092-1000W power amplifier board, the output is 3 ohm resistance, and the input AC 223V power is 1124W.