Power Supplies

RS offers a wide selection of power supply units (PSUs) for use in various domestic and industrial applications. Our range of power supplies includes AC-DC power supply adapters and desktop computer power supply suitable for domestic applications. We also have bench power supplies, DIN Rail and panel mount power supplies, and switch mode PSUs.

What is a Power Supply?

Power supplies are a crucial aspect of any electrical equipment, providing reliable power to machinery, computers or other technology devices. They convert an electric current from a source, such as mains plug, to the correct voltage, frequency and current needed to operate the equipment safely.

How Power Suppliers Work

Power supplies function by converting mains or three-phase electricity, often at 240 Vac or 440 Vac, down to a usable voltage, such as 12 Vdc. They also adjust the current rating, in the form of AMPS, to a safe level for the device. Here’s a detailed look at how they work:

• Conversion of AC to DC: Many devices require DC (Direct Current) for operation. Power supplies convert AC (Alternating Current) from mains into DC, ensuring compatibility with electronic components.
• Voltage Transformation: Power supplies alter the voltage level to meet the specific requirements of devices, whether they need high or low voltage levels.
• Voltage and Current Regulation: These units regulate the output voltage and current to prevent fluctuations, ensuring devices receive stable power.
• Safety and Compatibility: Power supplies incorporate safety features to protect devices from electrical surges and compatibility issues.
• Range Adaptability: Modern power supplies offer a range of voltage settings, making them versatile for different applications.
• Precision Control: Advanced models provide precise control over power delivery, crucial for sensitive electronic equipment.

Types of Power Supplies

Power supplies come in different types, each serving specific applications. Understanding each type will help you determine what is the best unit for your needs:

Unregulated Power Supplies

Unregulated power supplies are basic units that operate simply and cost-effectively. They are commonly used in applications where precise voltage control is unnecessary. However, they can produce output instability due to fluctuations in input voltage.

Linear Power Supplies

Linear power supplies use a transistor circuit to regulate output voltage, offering more stability than unregulated supplies. They are ideal for applications requiring low noise and precise voltage regulation.

Switch Mode Power Supplies (SMPS)

Switch mode power supplies (SMPS) are efficient, providing clean, stable power output by regulating the incoming mains voltage. They are lightweight and compact, making them suitable for a wide range of industrial and consumer electronics applications.

What is Power Supply Efficiency?

Power supply efficiency is known as the amount of power actually provided to the internal circuitry, divided by the amount of power drawn from the mains supply. For instance, if a PSU is 50% efficient and is required to provide 50 Watts of power, 100 Watts will be drawn from the main supply, with the extra 50 W lost as heat. In contrast, a PSU with 90% efficiency would only draw about 56 Watts to deliver the same 50 Watts, minimizing energy loss and improving overall efficiency.

Industries and Applications of Power Supplies

Power supplies are integral to a wide range of industries in the Philippines, each with specific needs for reliability and efficiency. Here’s how they are used in various sectors:

• Machine and Panel Building: Industrial power supplies, including 24V and 12V options, are critical for powering control systems, automation equipment, and other electrical components within machines and panels. They provide the precise voltages and currents needed to power PLCs (Programmable Logic Controllers), HMIs (Human Machine Interfaces), sensors, actuators, and other essential components.
• Marine & Offshore: Power supplies are tasked with powering navigation systems, communication equipment, lighting, and other vital onboard systems. They must be rugged and corrosion-resistant to withstand the harsh conditions of saltwater, humidity, and extreme temperatures.
• Military & Defense: Power supplies for military and defense are typically used for radar systems, communication networks, and other mission-critical equipment. As such, they must meet stringent standards for reliability, durability, and performance under extreme conditions.
• Automotive: These power supplies are designed to provide stable and reliable power to various electronic systems within vehicles, including infotainment systems, sensors, and safety features.
• Food and Beverage: Power supplies used in the food and beverage industry must adhere to strict hygiene standards and be able to withstand frequent washdowns and exposure to moisture. They are used for supplying power for conveyor belts, packaging machines, and refrigeration systems, ensuring that food products are processed and stored safely.
• Manufacturing: Manufacturing facilities rely on a wide range of power supplies, including industrial power supplies, to keep machinery, assembly lines, and other critical equipment running smoothly. These power supplies must be robust and reliable to withstand the demands of continuous operation, ensuring that manufacturing processes remain uninterrupted and productive.

Choosing the Right Power Supply

Selecting the appropriate power supply unit involves considering several key factors:

• Device Compatibility: Ensure the power supply matches the voltage and current requirements of your device.
• Functional Requirements: Consider whether the power supply needs to offer features like multi-voltage outputs or universal compatibility.
• Environmental Conditions: Assess the operating environment, such as temperature and humidity levels, to select a suitable unit.
• Power Requirements: Determine the power output needed to meet your device's operational demands.
• Industry Regulations and Safety Standards: Ensure compliance with industry-specific regulations and safety standards.
• Size and Installation Factors: Consider the physical space available for the power supply unit and ease of installation.
• Cost Effectiveness: Balance performance needs with budget constraints.

Purchasing Power Supplies from RS

When you choose RS for your power supply needs, you gain access to an extensive product range, quality assurance, and expert support. Our selection includes everything from power supply adapters to advanced units for industrial applications, ensuring you find the perfect solution for your requirements. Explore our catalog and find the right power supply unit for your needs today.

For more details on how we can deliver your equipment to your location, please check our delivery information.