12v 3a 36w Power Supply

12V 3A 36W Power Supply is a device that converts AC power to DC power. Its core function is to convert an AC input voltage of 100-240V into a stable 12V DC output voltage, with an output current of 3A and a power of 36W, providing power support for various electronic devices.

Characteristics of 12V 3A 36W Power Supply

output characteristic

Output voltage and current: The output voltage is stable at 12V with a small error range, ensuring accurate power supply for connected devices. The maximum output current is 3A, which can meet the current requirements of most small electronic devices. For example, when supplying power to small LCD displays, routers, and other devices, a current of 3A can ensure the normal operation of the equipment.

Power and efficiency: The power is 36W, and some high-quality adapters have higher efficiency. When the input is 115Vac and the maximum load is output, the minimum efficiency can reach 80%; When the input is 240Vac and the maximum load is output, the minimum efficiency can reach 85%. High efficiency means minimal losses during energy conversion, which not only saves energy but also reduces the heat generated by the adapter itself, extending its lifespan.

Load adjustment rate and linear adjustment rate: The load adjustment rate is usually within ± 5%, and the linear adjustment rate is around ± 3%. This means that under different load conditions, the variation of output voltage is small, which can provide a stable voltage environment for the equipment. For example, when the equipment changes from no-load to full load, the fluctuation of the output voltage is controlled within a reasonable range to ensure that the performance of the equipment is not affected.

Output ripple: The output power ripple is generally ≤ 100mV. A smaller ripple can reduce interference to the device and improve its stability and reliability. In some devices that require high power quality, such as precision instruments, audio equipment, etc., low ripple power adapters can ensure the normal operation and good performance of the equipment.

safety performance

Protection function: Equipped with overcurrent, overvoltage, short circuit, and over temperature protection circuits. When the output current exceeds the set value, the overcurrent protection circuit will activate, cut off the output, and prevent equipment damage due to overcurrent; When the output voltage exceeds the safe range, the overvoltage protection circuit will activate to protect the safety of the equipment and users; Short circuit protection can quickly cut off the power supply when a short circuit occurs at the output terminal, avoiding accidents; Over temperature protection can automatically reduce output power or cut off power when the adapter temperature is too high, preventing safety hazards caused by overheating.

Insulation impedance: Between AC input and DC output, the insulation impedance is greater than 50M Ω when the input DC is 500V. High insulation impedance can effectively prevent the occurrence of leakage phenomena and ensure the safety of users' use.

Safety certification: Complies with certification standards such as CE, UL, GS, PSE, FCC, ROHS, SAA, etc. These certifications ensure that the adapter meets relevant international and domestic requirements in terms of electrical safety, electromagnetic compatibility, environmental protection, etc. Users can use it with confidence.

Environmental adaptability

Working temperature and humidity: The working temperature range is generally 0 ℃ -40 ℃, and it works normally at full load; The working humidity range is 5% (0 ℃) -95% (40 ℃), and it can work normally at full load for 72 hours. This enables the adapter to work stably under different environmental conditions and adapt to various usage scenarios.

Drop test: Using the complete product as a sample, conduct three free drops from a height of 100cm onto a 20mm thick wooden board at the location where the most unfavorable results may occur. After testing, the appearance is allowed to have wear but no cracks, the input plug should not be loose or skewed, and all functions are normal. This indicates that the adapter has a certain degree of anti drop ability and can withstand certain external impacts during transportation and use.

physical property

Size and weight: The size and weight of adapters vary among different brands and models, but the overall trend is towards miniaturization and lightweighting. Some portable adapters may have a length of around 77.8mm, a width of approximately 38.5mm, and a height of approximately 24mm. They are lightweight and convenient for users to carry and use.

Appearance and structure: Well designed, lightweight and beautiful in appearance. Some adapters adopt a user-friendly indicator design, which can intuitively display the working status of the power supply, making it convenient for users to understand the operation of the adapter.

Application scenarios of 12V 3A 36W Power Supply

In the field of household appliances

LCD monitor and computer monitor: Provide stable 12V power supply for LCD monitor and computer monitor to ensure normal display and operation of the monitor. For example, in some old-fashioned LCD displays, a 12V 3A 36W power adapter is a common power supply device.

Set top box: Set top boxes require a stable power supply to receive and decode TV signals. A 12V 3A 36W power adapter can meet their power needs, ensuring that users can watch TV programs normally.

POS machine: In the field of commercial retail, POS machines require long-term stable operation, and a 12V 3A 36W power adapter can provide reliable power support to ensure smooth transaction processes.

Beauty equipment field

Beauty equipment, such as some RF beauty devices, photon rejuvenation devices, etc., require a 12V DC power supply to drive their internal circuits and functional modules. The 12V 3A 36W power adapter can provide suitable power for these beauty instruments, ensuring their normal use and beauty effects.

Mobile device field

Mobile power charging: Some mobile power banks have charging input interfaces that support 12V voltage. A 12V 3A 36W power adapter can provide fast charging services and shorten charging time.

Portable devices, such as some portable projectors, small speakers, etc., can be powered by a 12V 3A 36W power adapter, making it convenient for users to use in different situations.

Network equipment field

Routers and switches: Routers and switches are important devices for network communication and require stable power to ensure the normal operation of the network. The 12V 3A 36W power adapter can provide reliable power support for these devices, ensuring network stability and reliability.

Industrial control field

Sensors and controllers: In industrial automation control systems, many sensors and controllers require a 12V DC power supply to operate. A 12V 3A 36W power adapter can provide stable power for these devices, ensuring the normal operation of industrial production processes.