Plug-in / table power supplies with hollow plug

DC Hollow Plug Power Supply

If you're looking for a reliable plug-in or desktop power supply with a hollow plug for your electronic device, you've come to the right place. We offer a wide range of high-quality DC. Hollow plugs in various sizes and shapes to meet your specific needs. Our plug-in power supplies are safe, durable, and reliable and will keep your device running at its best. Look at our products now and find the right hollow plug power supply for your device.

What are DC power supplies with hollow plugs?

Plug-in or desktop power supplies with hollow plugs are external power supplies commonly used to power electronic devices such as laptops, routers, LED lights, cameras and other devices that require a direct current (DC) voltage.

A hollow plug, also known as a DC hollow plug, is a cylindrical plug with a central pin opening that is used to connect to a matching socket. Hollow plugs are available in different sizes and polarities, with the polarity indicating whether the inner pin is positive (+) or negative (-).

Plug-in or desktop power supplies convert alternating current (AC) from the wall socket into direct current (DC) with a specific voltage and current rating. The power specifications (voltage, amperage and polarity) must match the requirements of the appliance to ensure safe and proper operation.

Overall, plug-in or desktop power supplies with hollow plugs are a widely used solution for powering electronic devices that require direct current.

What do you need plug-in or desktop power supplies with hollow plugs for?

Hollow plugs are a component of external power supply units that are used for a variety of electronic devices. They serve as a connecting element between the power supply and the device that is to be supplied with power. Some of the most common uses of external power supplies with hollow plugs are:

Laptops and notebooks: many laptops and notebooks use hollow plugs to receive DC power from an external power supply.

Routers, modems, and network devices: These devices often require external power supplies with hollow plugs to obtain the necessary DC voltage for their operation.

LED lighting: LED strips and other lighting systems often use hollow plugs and external power supplies to provide the required DC voltage.

Cameras and surveillance systems: Security cameras and other surveillance systems often use external power supplies with hollow plugs to provide power.

Audio and video equipment: Some speakers, amplifiers, mixers and other audio or video equipment require external power supplies with hollow plugs.

Chargers: Battery chargers for devices such as electric toothbrushes, razors and other rechargeable devices often use hollow plugs.

It is important to emphasise that the size, voltage, amperage and polarity of the hollow plug and external power supply must match the requirements of the device to ensure a safe and efficient power supply.

What types of hollow plugs are there?

There are several types of hollow plugs, which differ in size and function. An important factor in the use of hollow plugs is the type of electrical voltage for which they are designed. Electrical voltage describes the difference between the charges of two poles, i.e. a positive and a negative pole, and influences the flow of current.

There are hollow plugs for direct current and hollow plugs for alternating current. With direct current, the current always flows from the positive to the negative pole. Alternating current, on the other hand, describes the periodic alternation of charges between the two poles. The English abbreviations for these terms are "direct current" (DC) for direct current and "alternating current" (AC) for alternating current.

Hollow plugs for laptops and similar devices that use direct current are often called DC hollow plugs or DC plugs. However, this designation is only correct if it is actually a connector for a DC socket.

There are also hollow plugs with integrated switches. These are fitted between a mains cable with a hollow plug and a consumer and do not require soldering or other complex procedures. There are different types of switches such as toggle switches, rocker switches or pushbuttons that can be used depending on the application and preferences.

What is polarity?

Another important characteristic of hollow plugs is their polarity. This means that with some hollow plugs it is important to connect the positive and negative pole correctly to avoid damage to the device or power supply. With some hollow plugs the polarity is standardised, with others it can vary.

Finally, the material quality of the hollow plugs is also an important factor. Hollow plugs should be made of high quality and durable material to ensure safe and reliable operation. Poor contact or insulation can lead to overheating, short circuits or other hazards.

What DC hollow plugs are there?

There are a variety of DC connectors with different sizes and shapes to suit different applications and devices. Here are some of the most common types of DC connectors:

The 5.5 mm x 2.1 mm DC plug is one of the most used DC plugs. It is often used for laptops, network devices, LED strips and other electronic devices.

The 5.5 mm x 2.5 mm DC plug is like the 5.5 mm x 2.1 mm DC plug, but with a larger diameter inner pin. It is often used for audio and video equipment.

The 3.5 mm x 1.35 mm DC plug is often used for small electronic devices such as cameras, routers, and wireless surveillance cameras.

The 4 mm x 1.7 mm DC connector is often used for mobile phones, tablets, and other small electronic devices.

The 7.4 mm x 5.0 mm DC connector is often used for Dell laptops and other Dell devices.

The 2.5 mm x 0.7 mm DC connector is often used for small electronic devices such as MP3 players and portable DVD players.

However, it is important to note that using the wrong DC plug can cause damage to the device. It is therefore important to ensure that you use the correct DC plug for the device in question and that the polarity is connected correctly.

FAQ on plug-in or desktop power supplies with hollow plugs

What is a plug-in power supply unit?

A plug-in power supply is an electronic device that is used to supply power to electronic devices. It is plugged into a wall socket and has one or more sockets for connecting hollow plugs. Plug-in power supplies are usually small, lightweight, and portable and are often used for devices such as laptops, mobile phones and cameras.

How do you choose the right plug-in power supply?

To choose the right plug-in power supply for your device, you need to know the power requirements of the device. This includes the voltage and current requirements of the device. You can usually find this information on the unit itself or in the user manual. It is important to choose a plug-in power supply that provides the correct voltage and current for the appliance.

Are plug-in power supplies universal?

No, not all plug-in power supplies are universal. Most plug-in power supplies are designed for specific devices or applications and have a fixed output voltage and current. However, there are also universal plug-in power supplies that can be used for a variety of devices.

Is it safe to use a plug-in power supply?

Yes, it is safe to use a plug-in power supply if it is selected and connected correctly. However, it is important to use good quality plug-in power supplies from trusted manufacturers to ensure that they meet the required safety standards.