55W Power Supply-GJ48WA Series Desktop Series Power Supply

The GJ48WA Series is a 55W medical power supply developed for electronic equipment that requires a compact external power source with medical-grade safety considerations. Its desktop configuration provides a practical solution for equipment where internal power conversion is not preferred or where available enclosure space is limited. With a continuous output power of 55W, the series is suited to a range of low- to medium-power medical and healthcare electronics, subject to the electrical requirements and certification needs of the final equipment.

Medical Application and Safety Considerations

Medical electronic equipment places greater emphasis on electrical safety than many general-purpose electronic products. The GJ48WA Series supports this requirement through compliance with medical safety standards including IEC60601-1, EN60601-1, ANSI/AAMI ES60601-1, GB9706.1, and CAN/CSA-C22.2 No. 60601-1. These standards provide an important reference for equipment manufacturers evaluating the suitability of a power supply for medical applications.

The applicable requirements depend on the final equipment design, classification, and intended use. Therefore, equipment manufacturers should evaluate the complete power system rather than selecting a power adapter based only on nominal wattage. Electrical isolation, leakage-related requirements, EMC performance, mechanical integration, and the operating environment should all be considered during product development.

Stable Power for Sensitive Electronics

Power quality can directly affect the operation of sensitive electronic circuits. The GJ48WA Series specifies maximum ripple and noise of 200mVp-p, providing a controlled DC output for equipment that may contain measurement, control, communication, or monitoring electronics.

Its minimum energy efficiency of 87.77% also contributes to more efficient power conversion. Higher conversion efficiency can reduce the amount of input energy dissipated as heat, which is particularly relevant for compact equipment where thermal management and enclosure space need to be carefully controlled.

Integrated Protection Functions

The power supply incorporates over-voltage protection (OVP), over-current protection (OCP), and short-circuit protection (SCP). These functions help reduce the risk associated with common electrical fault conditions during equipment operation.

Over-voltage protection helps limit abnormal output voltage conditions, while over-current protection responds when the connected load draws excessive current. Short-circuit protection provides an additional layer of protection if an output fault occurs. These functions are important considerations for equipment manufacturers seeking a power supply that can operate as part of a dependable electronic system.

Compact Desktop Configuration

The GJ48WA Series uses a compact desktop form factor measuring 87 × 47 × 32 mm. The relatively small enclosure allows the power supply to be positioned outside the main equipment housing while keeping the overall power solution compact.

An IEC60320-1 C8 AC inlet provides a standardized connection arrangement for the AC input side. The desktop configuration can also simplify maintenance or replacement compared with a power supply permanently integrated into the equipment enclosure.

The specified operating temperature range of -10°C to 40°C provides a defined environmental range for equipment manufacturers to consider during system design. Actual application suitability should be evaluated against the temperature conditions expected at the installation site.

Input and Compliance for International Equipment

The GJ48WA Series supports a rated input range of 100–240VAC at 50/60Hz, with an operating range of 90–264VAC. This broad input capability allows the same power supply platform to be considered for equipment intended for different regional power systems.

In addition to medical safety standards, the series includes EMC-related requirements covering EN55032, EN55014, EN55035, FCC Part 15B, GB9254, and GB17625.1, together with applicable EN IEC 61000-4 and EN IEC 61000-3 requirements. These specifications provide equipment manufacturers with key compliance information when evaluating the power supply for international markets.

Selection Considerations for Equipment Manufacturers

Before integrating the GJ48WA Series into a medical electronic product, manufacturers should verify the complete electrical and mechanical interface between the power supply and the equipment. Key considerations include:

• Required output voltage and operating current of the equipment

• Continuous power demand and possible peak loading conditions

• Applicable medical safety and EMC requirements

• Connector and cable configuration

• Available installation space and environmental temperature

• Certification requirements for the intended target market

The 55W medical power supply is therefore best evaluated as part of the complete equipment power architecture rather than as an isolated component. Proper matching of electrical specifications, safety requirements, EMC performance, and mechanical conditions can help equipment manufacturers establish a more reliable and compliant power system.