| Quantity | 3+ units | 10+ units | 30+ units | 50+ units | More |
|---|---|---|---|---|---|
| Price /Unit | $38.17 | $37.39 | $36.22 | $34.67 | Contact US |
LLC 700W Dual Output Voltage (+/-55V and 21V) Switch Power Supply Board for Power Amplifier
Specifications:
- Input voltage: AC200-240V
- Output: main voltage ±55V; independent 21V; auxiliary ±21V (share ground with the main voltage) (auxiliary and independent unregulated, the main voltage becomes lower and lower, used in low requirements occasions, such as powering a fan, etc.)
- Attention: 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 the time is 10mA, and the auxiliary and independent cannot carry loads above 10mA.
- Voltage stabilization accuracy: main no-load ±3%, loaded ±3% (when AC220V input)
- Continuous power: 350W (continuous work at 25°C ambient temperature)
- Rated power: 700W (continuous work for about 5 minutes at 25°C ambient temperature, long-term work plus fan cooling)
- Instantaneous power: 900W (power generated during dynamic signal impact, time is less than 100 milliseconds)
- Conversion efficiency: Max. 98%
- Dimensions: 96 x 96 x 38mm/3.8 x 3.8 x 1.5" (L x W x H)
- Product weight: 310g
Package Included:
- 1 x Switch Power Supply Board
Note:
- This product is a bare board with high voltage circuit hazards and must be purchased by someone who can use it. Our store will not bear any consequences caused by use.
- For commercial purposes, some circuits and components are polished and encrypted, and schematic diagrams, PCBs, and technical support are not provided.
- For long-term high-power use, please add a fan for air cooling. The power supply is equipped with overheating, overcurrent, and short circuit protection. The overcurrent and short circuit protection is locked protection, and the main filter capacitor voltage must be disconnected from the AC power supply and reduced to 0V before starting again. This power supply is a true LLC power supply, with a high-frequency sine wave resonant circuit. It is not an ordinary square wave switching power supply, and is very suitable for use in power amplifiers with good results.
- Each power supply is tested before shipment, and our store is not responsible for any burnt transformers, pipes, or ICs. If maintenance is required, please bear all costs by yourself! The board is constantly upgraded and revised, and the component circuit may be modified.
