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An AC/DC adapter, or plug-in power supply, is an electrical device that takes input power from a mains power supply and converts it to the right current, frequency and voltage to power the device it is attached to. Main power supplies provide power to devices that have no other power source. These are suitable for applications such as chargers, set-top boxes, motor control and other office automation products. A plug-in power supply resides outside the main unit, unlike a computer power supply, which is internal. 

## **How AC/DC Adapters Work**

Also known as AC to DC adapters, these adapters are a type of external [power supplies](https://au.rs-online.com/web/c/power-supplies-transformers/power-supplies/) that serve a crucial role in powering various electronic devices. They take the alternating current (AC) power supplied from mains outlets and convert it into direct current (DC) power. This DC power is used to charge many electronic devices. 

Each AC/DC adapter is designed with a specific power rating, measured in volts or watts, which determines the amount of power it can deliver. It is important to select an adapter with the correct voltage and current output to match the requirements of your device.

## **AC/DC Power Adapter Types**

### **Wall Mount Adapters**

Wall mount adapters plug directly into a wall socket and provide DC power to the device via a cable. They are compact and commonly used for charging smartphones, laptops and other portable devices.

### **Desktop Adapters**

Desktop adapters are larger and typically used for powering desktop computers, printers and other devices that are not designed for portability. They often feature a separate power cord that connects to the mains outlet.

### **Multi-Voltage Adapters**

Multi-voltage power adapters are designed to operate within a range of input voltages, making them suitable for use in different countries with varying mains voltages. They often include interchangeable [plugs suitable for travellers](https://au.rs-online.com/web/content/discovery/ideas-and-advice/travel-adapters-guide) due to their international compatibility.

### **Regulated Adapters**

Regulated adapters provide a stable output voltage even when the input voltage fluctuates. This is crucial for sensitive electronic devices that require a consistent power supply.

### **Unregulated Adapters**

Unregulated power adapters have a simpler design and are generally less expensive. However, their output voltage may vary depending on the input voltage and load, making them less suitable for sensitive electronics.

## **Difference Between Universal and Single-Purpose AC/DC Adapters**

### **Voltage Range**

Universal AC/DC adapters support a wider range of output voltages, allowing them to power various devices with different voltage requirements. Single-purpose adapters have a fixed output voltage.

### **Interchangeable Plugs**

Universal adapters often include a set of interchangeable plugs, making them compatible with different device connectors. Single-purpose AC and DC adapters have a fixed plug type.

### **Applications**

Universal AC/DC adapters are ideal for travellers or users with multiple devices requiring different power sources. Single-purpose adapters are designed for a specific device or application.

## **International Plug Power Supplies**

Many AC/DC power adapters are designed for international use, offering features that ensure compatibility and safety across different regions. These power supply adapters often come with interchangeable input connectors that can be easily swapped to match the wall socket configurations in other countries, such as the United Kingdom, USA, Europe, and Japan. Additionally, they may incorporate protection features against short circuits, over-voltage and overload to meet international safety standards and approvals.

## **Are All AC/DC Adapters the Same?**

Not all AC/DC adapters are created equal. While they all perform the basic function of converting AC power to DC power, they differ in terms of voltage, current output, plug type and safety features. It is crucial to select an AC/DC adapter that matches the specific requirements of your device. Using an adapter with incorrect voltage or amperage can damage the device or pose a safety hazard. If you are unsure about the correct adapter for your device, investing in a universal power adapter with multiple plug options can provide greater flexibility and compatibility.

### **Industrial Applications of AC/DC Power Adapters
Automation Equipment**

In industrial automation, AC/DC adapters play a crucial role in powering sensors, actuators and control systems that drive automated production lines. They are commonly used in programmable logic controllers (PLCs), robotic systems and other automated machinery.

### **Telecommunications**

Telecommunications networks rely heavily on AC/DC adapters to power equipment such as routers, switches and base stations. These adapters provide a stable and reliable DC power source, ensuring uninterrupted communication and data transmission. 

### **Instrumentation**

AC/DC adapters are used to power various measuring instruments and sensors such as [data loggers](https://au.rs-online.com/web/content/discovery/ideas-and-advice/data-loggers-guide) for data collection. They are commonly used in process control, environmental monitoring and laboratory testing applications.

### **Security Systems**

AC/DC adapters provide continuous power to security cameras, alarms and access control systems. They are crucial for maintaining security in commercial buildings, industrial facilities and public spaces.

### **Medical Devices**

AC/DC adapters power a wide range of medical devices, from portable diagnostic tools to patient monitoring systems in hospitals, clinics and home healthcare settings. These adapters provide a safe and reliable power source for sensitive medical equipment, ensuring accurate readings and patient safety. 

## **How to Choose the Right AC/DC Power Adapter**

### **Output Voltage**

The output voltage of the AC/DC adapter must match the voltage requirement of your device. Using an adapter with an incorrect voltage can damage the device or cause it to malfunction. Always check the device's specifications or user manual to determine the correct voltage.

### **Output Current**

The output current, measured in amps (A), indicates the amount of current the adapter can deliver. The adapter's output current should be equal to or greater than the current drawn by your device. If the adapter's current rating is too low, it may overheat and fail to power the device correctly.

### **Plug Type and Polarity**

The type and polarity of the AC/DC adapter plug must match the input connector on your device. Using an incompatible plug or incorrect polarity can damage the device or prevent it from powering on. Refer to your device's specifications or user manual to confirm the correct plug type and polarity.

### **Safety Approvals**

Look for safety approvals, such as Underwriters Laboratories (UL), International Electrotechnical Commission (EC), and European Norm (EN). These approvals indicate that the AC/DC adapter meets specific safety standards, ensuring that the adapter has been tested for electrical safety, fire hazards, and other potential risks. 

### **Efficiency**

The efficiency of an AC/DC adapter indicates how effectively it converts AC power to DC power. Higher efficiency adapters waste less energy as heat, resulting in lower operating costs and environmental impact. Look for adapters with high efficiency ratings, especially for applications where the adapter will be in continuous use.

## **Trusted Power Adapter Manufacturer, Supplier and Distributor in Australia**

When it comes to electrical and industrial products, RS Australia is a leading provider. We stock adapters from reputable brands such as [Bticino](https://au.rs-online.com/web/b/bticino), [MEAN WELL](https://au.rs-online.com/web/b/mean-well/) and more. 

Our extensive range of electrical products, including AC/DC power adapters, [multimeter test leads](https://au.rs-online.com/web/c/test-measurement/multimeters-accessories/multimeter-leads/), and [current transformers](https://au.rs-online.com/web/c/automation-control-gear/process-control/current-transformers/), ensure you have access to what you need.

## **Buy AC/DC Adapters from RS Australia**

Looking for a reliable AC/DC adapter in Australia? Look no further than RS Australia. We offer a wide range of power adapters with fast and reliable delivery across the country. Our online and offline ordering processes are simple and efficient, and we provide various delivery options to suit your needs. For more information on delivery times and options, please visit our [Delivery Page](https://au.rs-online.com/web/content/support/all-articles/delivery).



From universal to single-purpose AC and DC adapters, find the best power supply adapter to suit your needs at RS Australia. Fast and efficient delivery.

Power Adapter | AC DC Power Adapter Plug Australia

AC/DC Adapters

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Power Bricks | RS

We welcome anyone who is looking for a 12V DC output adapter. Just browse through the list of adapters and you can find the right option to cater to your needs.

12V AC Adapters | RS

When you want to use an appliance that requires a 12V DC power supply, you will need to be using a 12V DC adapter. Different appliances come along with different input voltage ranges. You need to make sure that you provide the correct DC voltage input. This will help you to ensure the proper functionality of the DC powered appliance.How does a 12V DC adapter work?The main functionality of a 12V DC adapter or 12V DC output adapter is to convert AC voltage into DC voltage. In here, the AC voltage is converted into 12V DC voltage. DC current refers to a current that is flowing only in one direction. There aren't any changes to polarity or the frequency in DC current. If you supply 120V AC current to the 12V DC adapter with 60Hz, you will end up with getting 12V DC voltage with 60Hz.You should also keep in mind that a DC adapter is usually rated for a maximum power output. This is defined in watts. It would determine the maximum amount of current that the DC adapter is capable of processing. For example, a 12V DC output adapter that is rated for a maximum power output of 36W would be able to deliver a 12V DC 3A current output. In here, current will be kept as a constant.Buy your 12V DC power supply from usIf you are searching for a new 12V DC power supply, you may simply take a look at what we offer. Whether you are searching for a 12V DC 2A, 12V DC 1A, or 12V DC 3A power adapter, we got you covered. It is up to you to decide whether you need a 1A power supply, 2A power supply, or 3A power supply based on your needs.

18v DC power adapter is made from high-quality materials to provide current. Work or play with quality and power of 18v power supply or 18 volt DC power supply.

18v Power Supply, 18v DC Power Adapter, 18 Volt DC | RS

A power supply is an electronic device which handles supplying the enough and required amount of current to an electronic equipment. The power supply has different divisions based on voltages such as 14v power supply.There are many types of power supplies. The most important are switching, linear regulated and unregulated power supply.Different electronic devices require power supplies of different voltages to fulfill their voltage requirements. For example, 18-volt dc power supply is powered with Milter Saws, Drills, Table Saws, Hammer Drills, Circular Saws and impact Drivers because these mentioned devices draw less power consumption.The power adapters perform the function otherwise, as they convert the ac current into dc current. Dc power adapter is widely known and used for the conversion of currents.An <a href="/web/p/bench-power-supplies/1176780">18v power supply</a> is a necessary piece of equipment for many devices.It allows items like computers and tools to be operated from a battery instead of an electric outlet, which can save time and money. The dc power supply devices often have more versatility than standard power supplies. They are able to operate devices that use different voltages, such as tools or vehicles. People prefer to use 18v power supply for continues and constant work.Power supply devices are different in the types of batteries according to material and some specifications. Lead-acid batteries are common in industrial applications, but lithium-ion batteries offer more flexibility when it comes to charging time and weight. So, if you need a power supply that will work with several different types of batteries, then an 18v power supply may be the best option for you.<h2>18v dc power supply</h2><h2>The 18-volts dc power supply is basically the strength of the device and an ability to which extent, it provides sufficient current. The strength of the battery determines the outcome. The greater the effort needed, the higher the voltage required. It converts the ac current into dc current. People often need to drop voltages. An <a href="/web/p/dc-dc-converters/8163483">18v to 12v converter</a> is separately available for the conversion. The simplest way to convert 18-volts to 12v is a 12v battery and a resistor from its positive terminal to the 18v positive supply terminal. Now the loads are connected to the battery. Now connect the other terminal of the 18v to the other terminal of the battery and the conversion is done.</h2><h2>18v power adapter</h2>A powered-battery adapter that provides required current/voltages to specific electronic equipment. The adapter is primarily used for converting ac into a single dc for the computer. Another type of power supply is the 18-volt pedal power supply which is used to current the guitars. Now the question arises is if you can run pedals at 18-volt. The main thing to remember is to use the specific voltages a pedal requires. Some pedals are particularly designed to accept from 9v to 18-volt. Some pedals are particularly designed to accept from 9v to 18-volts. The changing voltage from 9v to 18-volts gives an alternative tone and a little headroom but only if they are designed this way.A voltage divider is needed with 2 resistors with value of 1k and 2k ohms. Then apply a resistor and a 12v diode. Take a 12v linear regulator IC and connect it with a capacitor at the input and output. A commonly asked question is that if an 18-volts power supply can be used to power a 12v device. A 12v can be powered with 18-volts but it is not very much suggested to maintain a connection for a longer time span as it carries risk. The 18-volts power adapter can be affected and the wastage of money.Purchasing an <a href="/web/p/ac-dc-adapters/1440991">18v dc adapter</a> or 18-volts power supply will not only save your time but also give you more convenience while working with tools.

12V AC Adapters

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