YZC-PFC-1KW 1000W Switching Power Supply Amp Power Supply Main Voltage ±50V for Amplifiers Speakers

YZC-PFC-1KW 1000W Switching Power Supply Amp Power Supply Main Voltage ±50V for Amplifiers Speakers

Read Before Purchasing:
- Please read this product description carefully before buying, please make sure you have a certain electronic technology foundation. Because there is high voltage mains power on the input part of the power supply module, please pay attention to the safety of operation! When the output voltage is higher than 36V safety voltage, please pay attention to your own safety protection. Our store does not bear the consequences and losses caused by users' blind operation!
- The switching power supply is used for power amplifiers. Its heat dissipation design is for power amplifiers. It is forbidden to use it for other non-amplifier occasions. If the damage is caused by blind use in other occasions, the consequences shall be borne by users! If it is used for special occasions, it must be used in a derating and you can consult customer service for details!
- Since each different parameter will use different voltage-resistant components, the actual product will be different from the product pictured. The appearance and color of some raw materials in each batch will be somewhat different, but the parameters are the same and do not affect the use. Please make sure that you don't mind before purchasing.

Specifications:
- Input: AC100-240V 50/60HZ.
- Auxiliary power supply: ±12V 0.5A (main voltage and auxiliary voltage are not sharing common ground. They are completely isolated). If the switching power supply controls the main voltage, the main voltage must use the auxiliary voltage and with a certain load. If the main voltage is no-load, the chip will think that the chip will be turned off once the switching power supply output voltage is reached. It is not allowed to use only the auxiliary part without the main voltage.
- Output: Main voltage ±50V (can be fine-tuned in small ranges; preferably near the highest output voltage).
- Auxiliary voltage: ±15-20V 0.5A. Auxiliary voltage: ±12V 0.5A (±12V is obtained by stepping down ±15V and the total current is 0.5A). ±15V may fluctuate between 15-20V, and when the main load is fixed, the auxiliary output voltage is relatively fixed.
- PFC power factor: 0.993.
- Conversion efficiency: 90-95% (higher efficiency when the output main voltage is higher).
- Dimensions: 189 x 106 x 43mm/7.4 x 4.2 x 1.7".
- Weight: 0.72kg/1.6lb.
- Ripple: peak value about 0.3% (Test ripple by using a coaxial cable. The shorter the outer ground wire, the smaller the impact. When using an oscilloscope probe, the test value will be too large, because the probe ground wire will affect the value deviation).
- With independent inductors, the heat will be less and it is more stable to work. And the voltage can be fine-tuned.
- Suitable for driving all types of power amplifier boards. If your class A power amplifier board is fully loaded for a long time, you need to add a fan to dissipate heat.

Attention:
- Please pay attention to the voltage parameter. In no-load conditions, it is normal for the output voltage to jump a little because its no-load chip is operating in intermittent power-on mode.
- In addition, the positive and negative voltages will have a certain error when there is no load, which is normal.
- You can fine-tune the voltage of the switching power supply and the highest output voltage is its best state. When the voltage is lowered and the load is relatively light, it is easy to cause the switching power supply from the fixed pulse width mode into the intermittent mode, and the intermittent mode will inevitably lead to a change in pulse width. If noise suppression of some power amplifier board is not good, it is easy to lead to static noise. It is quite easy to solve this problem. Add a dummy load between the output + VCC and the ground, such as add a high-power cement resistor. The exact amount to add depends on the actual needs, because different boards will have different needs.
- The maximum working voltage output by the switching power supply board must be less than 90% of the maximum withstand voltage of the power amplifier board. Then the switching power supply has the cleanest waveform at quiescent in the case of the highest voltage output.
- The LLC control board and PFC part each use a small board independently, and the components face outward, which is convenient for testing voltage or waveform, and also convenient for maintenance and debugging. PFC part's bridge stack, switch tube, rectifier diode use a door shaped radiator, which is convenient for users to install a 40x40mm/1.6x1.6" fan when used in continuous load applications. DC~DC part adopts solid aluminum heat sink 10mm/0.4" in thickness, and the heat sink tube faces outward for easy disassembly. It is equipped with an 85°C temperature control switch in the middle. When the heat sink temperature exceeds 85°C, the board will turn off the chip output.
- Each product has a warranty label on screw seals, these labels must not be damaged. The item cannot be returned if there is any unauthorized modification (such as drilling, making thread, grooving, etc. to destroy the appearance of the product) or warranty label damage.

Package Included:
- 1 x Switching Power Supply