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CA901 Switching Power Supply Repairing Module – SSH7N90 MOSFET

 

CA901 Switching Power Supply Repairing Module – SSH7N90 MOSFET





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Introduction

The CA901 Switching Power Supply Repairing Module is commonly used in SMPS (Switched Mode Power Supply) repair work. It is designed to replace faulty primary-side switching circuits and is widely used by technicians for quick and reliable power supply repairs. The module typically uses the SSH7N90 high-voltage MOSFET, making it suitable for high-power applications.

What Is the CA901 Repairing Module?

The CA901 module is a ready-made SMPS repairing board that simplifies power supply repair. Instead of troubleshooting multiple damaged components, technicians can install this module to restore functionality quickly.

Role of SSH7N90 MOSFET

The SSH7N90 is a high-voltage N-channel MOSFET used for switching operations in SMPS circuits.

Key features of SSH7N90:

  • High voltage handling

  • Fast switching speed

  • Low power loss

  • Reliable performance in SMPS designs

How the CA901 Module Works

  1. AC input is rectified and filtered.

  2. The CA901 module controls high-frequency switching.

  3. SSH7N90 MOSFET drives the transformer.

  4. Output voltage is regulated through feedback.

  5. Stable DC output is delivered to the load.

Applications

  • LCD & LED TV power supply repair

  • SMPS repair for chargers and adapters

  • Audio amplifier power supplies

  • Industrial switching power supplies

Advantages of Using CA901 Module

  • Saves repair time

  • Reduces component-level troubleshooting

  • Cost-effective solution

  • Easy installation

Safety & Installation Tips

  • Always discharge capacitors before installation

  • Use proper insulation and heat sink

  • Check input voltage compatibility

  • Test output under load

Common Repair Scenarios

  • No power output

  • Blown MOSFET replacement

  • Dead SMPS units

  • Short circuit protection failures

Conclusion

The CA901 Switching Power Supply Repairing Module with SSH7N90 MOSFET is a reliable and efficient solution for SMPS repair technicians. It simplifies complex repairs and restores power supplies quickly when used correctly.

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