Power supplies are devices whose task is to match the available voltage to the requirements of the equipment being powered. There are many possibilities to change the size of the voltage, which allows to distinguish several basic types of power supplies. Among them there are linear, pulsed and stabilized power supplies. Many power supplies have a parameter adjustment function, so they can be adjusted to the specific equipment and used with more than one. These are universal power supplies with wide application. When it comes to power supplies, which are characterized by current parameter control, they are used mainly in laboratories. There they are used for prototyping. In domestic devices, in turn, socket power supplies are commonly used. If we are looking for a power supply for a LED strip, the best choice will be a mounting power supply. All these models are available in Botland shops. We offer a wide range of products, among which are car, emergency and industrial power supplies, as well as power strips and water generators.
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Power supply
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Power supply justPi C USB 5V/3A for Raspberry Pi 4B
Dedicated power supply for the Raspberry Pi 4B minicomputer (1 GB, 2 GB and 4 GB RAM). It has parameters consistent with the recommendations of the Raspberry Pi foundation:...
Index: SHR-14516
Index: SHR-14516
justPi power supply for Raspberry Pi 3B+/3B/2B/Zero - microUSB 5V/2,5A
A power supply equipped with a microUSB connector compatible with the Raspberry Pi mini-computer. It has parameters allowing for optimal power supply to the Raspberry Pi 3B+ /...
Index: ZAS-07363
Index: ZAS-07363
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Power supply justPi 12V/2. 5A for Arduino - DC plug 5,5/2,1mm
A switching power supply from justPi with parameters enabling optimal power supply of the Arduino module. This power supply is equipped with a compatible 5.5/2.1 mm DC...
Index: JUS-22694
Index: JUS-22694
Power supply justPi for Raspberry Pi 3B+/3B/2B/Zero microUSB black 5V/2,5A
Dedicated power supply for Raspberry Pi 3B+/3B/2B/Zero series minicomputers with 5 V output voltage and 2.5 A current capacity. Equipped with a 1.2 m long microUSB cable.
Index: SHR-14515
Index: SHR-14515
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Power supply for Raspberry Pi 4 - USB C 5,1V / 3A - original black
Original , black power supply for the minicomputer Raspberry Pi 4 with USB-C connector . The maximum current efficiency is 3 A.
Index: RPI-14348
Index: RPI-14348
Raspberry Pi 27W USB-C Power Supply - official 5,1V / 5A PSU for Raspberry Pi 5 - white
Official Raspberry Pi USB Type-C power supply with Power Delivery (PD) with a capacity of 27 W. The maximum current efficiency is 5 A at a voltage of 5 V , so it is able...
Index: RPI-23906
Index: RPI-23906
Power supply justPi USB-C 5,1V / 3A for Raspberry Pi 4B
Switch mode power supply, dedicated for Raspberry Pi 4 minicomputer. It has appropriate parameters needed for optimal power supply of the device. Output voltage is 5.1 V and...
Index: ZAS-14878
Index: ZAS-14878
Power supply Huawei HW-120200E1W 12V/2A - DC plug 5,5/2,1mm
Stabilized mains power supply with a supply voltage of 100 V to 240 V. The output voltage of the power supply is 12 V DC and the output current is 2 A. The power supply has a...
Index: SLA-25661
Index: SLA-25661
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Raspberry Pi 27W USB-C Power Supply - official 5,1V / 5A PSU for Raspberry Pi 5 - black
Official Raspberry Pi power supply with USB Type-C input and Power Delivery (PD) technology with a power of 27 W. It can provide a current with a maximum efficiency of 5...
Index: RPI-23907
Index: RPI-23907
justPi power supply microUSB 5,1V / 3A for Raspberry Pi 3B+/3B/2B/Zero
Power supply with a 1.2 m cable terminated with a microUSB plug. The parameters of the power supply ensure optimal power supply to the Raspberry Pi mini-computer. The output...
Index: ZAS-09707
Index: ZAS-09707
Switching power supply 12V/3A - DC plug 5.5/2.5 mm - black
Stabilized AC adapter. Supply voltage: 200 V to 240 V. Output voltage: 12 V DC. Output current: 3 A. Has a 5.5 / 2.5 mm DC plug.
Index: SPT-13759
Index: SPT-13759
Power supply 5V/2,5A - DC plug 5,5/2,5mm
Stabilized mains power supply. Power supply: 110 - 240 V. Output voltage: 5 V DC. Output current: 2.5 A.
Index: ZAS-01364
Index: ZAS-01364
Power cable adapter IEC - Schuko (F) for UPS 20cm - black
Adapter for the power cable with IEC 320 C14 on Schuko, with the length of 20 cm, it is mainly used for PC and server computers, and power supplies for laptops, UPS and any...
Index: IMP-13202
Index: IMP-13202
Power supply 5V/3A - DC 5,5/2,1mm
Stabilized power supply unit. Supply voltage: 100 V to 240 V. Output voltage: 5 V DC. Output current: 3 A. Connector: DC 5,5 / 2,1 m plug.
Index: ZAS-07160
Index: ZAS-07160
Power supply 5V / 2A - microUSB for Raspberry Pi Zero
Power supply dedicated to power the Raspberry Pi Zero minicomputer . Output voltage is 5 V and current capacity is max. 2 A. The power supply is equipped with a 1.2 m...
Index: ZAS-08849
Index: ZAS-08849
Power supply for Raspberry Pi 3B+/3A+/3B/2B/Zero/Zero 2 - microUSB 5,1V / 2,5A - original white
Original white power adapter created by Raspberry Pi foundation. The power supply is dedicated to power Raspberry Pi 3B+ / 3B / 3A+ / 2B / Zero / Zero 2 minicomputers and...
Index: RPI-20348
Index: RPI-20348
MW Power ER12W12V switching power supply 12V/1A - DC plug 5.5/2.1mm
ER12W12V Switch Mode Power Supply from MW Power. Designed to power equipment with a 5.5 / 2.1 mm plug. The output voltage of the power supply is 12 V and the output current...
Index: WAK-18269
Index: WAK-18269
The power cord is 1.5 m long with two veins with a thickness of 0.5 mm each.
Index: KAB-02852
Index: KAB-02852
Power supply 12V/2,5 - DC connector 5,5/2,5 mm - white
Stabilized power supply unit. Supply voltage: 200 V to 240 V. Output voltage: 12 V DC. Output current: 2.5 A.
Index: SLA-13912
Index: SLA-13912
Power supply 30V/2A - DC 5,5/2,5mm plug - with cable
A desktop-type power supply with an output voltage of 30 V and a current capacity of 2 A . It has a 150 cm cable with a 5.5 / 2.5 mm DC plug. The input voltage ranges from...
Index: SPT-17086
Index: SPT-17086
Laboratory power supply Korad U205 0-60V 3A
Korad U205 is a laboratory power supply that provides power with an adjustable voltage from 0 V to 60 V and current from 0 A to 3 A. Perfect for laboratory applications...
Index: KOR-24360
Index: KOR-24360
Power supply 12V/3.8A - DC 5,5/2,1mm plug
Stabilized power supply unit with an output voltage of 12 V and current capacity of 3.8 A. The cable is 2 m long and has a DC 5.5 / 2.5 mm connector. The input voltage is...
Index: SPT-17084
Index: SPT-17084
Power supply Sagemcom NBS36C120250HE 12V/2,5A - DC 5,5/2,1mm plug - black
Switch mode power supply with an output voltage of 12 V and a current capacity of 2,5 A . The input voltage ranges from 200 V to 240 V. The power supply cable is terminated...
Index: SPT-17087
Index: SPT-17087
Switch-mode power supply 12V/2,5A - 220V-240V - DC plug 5,5/2,5mm
Stabilized power supply unit. Supply voltage: from 220 V to 240 V AC. Output voltage: 12 V DC. Output current: 2,5 A. Connector: DC 5,5 / 2,5 m plug.
Index: ZAS-05043
Index: ZAS-05043
See also
Power supply – basic information
Our offer includes a wide selection of power supplies - depending on the target device, they have different output current parameters and require different conditions. The selection of the power supply should always be adjusted to the current requirements of the device it will power. You should pay special attention not only to the power of the power supply, but also to the voltage range. Devices with too low an input voltage will not properly power the connected equipment. The efficiency of the power supply and its type, and in fact its purpose (e.g. computer power supply, desktop power supply or office computer power supply) are also extremely important.
Types of power supplies
Laboratory power supplies are the most universal. These devices are very helpful tools in robotics and electronics work. They allow you to adjust the appropriate voltage parameters to the devices you are currently building or, for example, during calibration, repairs or learning. They are usually equipped with a standard fan ensuring the appropriate level of cooling, as well as modular cabling.
A similar group are function generators, which are characterized by the ability to generate current waveforms with a specific function shape - for example, rectangular, sawtooth or sinusoidal. They are used either in technical universities, for analog sensors, for testing circuits, integrated circuits or for scientific research.
Plug-in power supplies are products tailored to their target devices. They are characterized by easy connection to a wall socket and an appropriate plug for connection to equipment.
How to choose a power supply? When choosing a specific model, pay special attention to the appropriate voltage and current parameters and to the appropriate plug at the end of the cable. Power supplies from this category are most often used for development boards (such as Raspberry Pi or Arduino ). In addition, the device must not have an input voltage that is too low.
What else do we offer?
Our offer also includes mounting power supplies - most of the products are intended for use with LED strips, which are often used in modern types of home or office lighting. We also offer DIN rail power supplies for use both in industry and at home or office.
UPS emergency power supplies allow for the safe use of equipment that could be damaged as a result of a sudden power outage or as a result of changes in parameters (for example, desktop computers). ATX power supplies are tools with a wide range of applications, but they are most often used in desktop computers to supply voltage of various parameters to various components (including the graphics card). We offer computer power supplies (PC power supplies) with high efficiency.
The remaining range of categories
In the "Cables and adapters" subcategory you will find a large selection of various types of cables of various lengths and many different adapters. We also have power strips and extension cords that will make it easier for you to control a larger number of connected devices at the same time.
Also check out the offer of power generators, thanks to which you will be able to, for example, recover energy from your tap. You will also find car chargers with single and multiple USB sockets or, for example, phone stands with inductive charging function.
Power supplies - FAQ
The power supply is designed to supply electricity to other devices - e.g. a computer, audio amplifier or LED lighting . The basic parameters of each power supply are the type and value of the output voltage, the maximum output current and the permissible load power.
In the case of constant voltage power supplies the basic test is to measure the voltage at the device's output - it should be within the range specified by the manufacturer in the power supply documentation. However, please remember that in the case of some serious damage, connecting an "unknown" power supply to the network may cause a short circuit in the electrical installation.
Desktop computers use the so-called ATX power supplies – solid switching power supplies with a power of several hundred watts, available in housings of standardized sizes. Desktop power supplies are intended for laptops, equipped with a specific type of plug or a set of interchangeable plugs, compatible with computers of various manufacturers.
The switching power supply uses a special electronic controller that lowers the output voltage by appropriately and quickly switching the voltage of the primary winding of a special transformer . Increasing the frequency not only reduces the size of the transformer, but also significantly increases the efficiency of the power supply (at the price of a higher level of noise).