AC/DC Adapters
AC adapter (Japanese AC アプー) (AC/DC Adapter), AC means alternating current, and Ac Charger is an AC power source. Many electrical appliances require the use of AC adapters. The term AC adapter is simply used in commercial products, which essentially refers to an AC power supply. In the industrial field, we refer to it as a switching power supply, but there is a slight difference in appearance.
Safety regulations and standards
1. Tracing back to safety standards
EN60335, EN60950, UL60950, AS/NZ60950, EN61558, J60950GB4943, GB17625;
Electromagnetic compatibility CISPR22, Class B, EN55022, FCC insulation level B.
2. 19V4.75A power supply, model: FY1904750 Trademark: FBelec
1. Stress test: Each lead terminal of the product can withstand an axial tensile force of 2 kilograms for 60 seconds without any looseness, blockage, or other damage.
2. Drop test: The product has a self height of 90CM, with one drop in each X-Y-Z direction. After falling onto a loose wooden board with a thickness of 1 CM, there are no abnormalities. The insulation resistance test is conducted, with a minimum of 10M ohms. Refer to GB/T 4857.
3. Wire sway test: The wire weighs 200 grams and swings left and right at an angle of 120 degrees. After 300 rounds, it must still be conductive. Refer to UL-817/JISC8306.
Folding to obtain authentication
> US/Canada UL, cUL, FCC, NrCAN, CEC
> Europe/Germany TUV/GS, CE, ErP, CB, RoHS, LVD, EMC
> British BS,
> Australia SAA, C-Tick, MEPS
> Korea KC
> Japan PSE
> China CCC
What issues should be noted when purchasing an AC adapter?
1. It is important to be clear about the range of input voltage for your power adapter, preferably using the world standard AC100-240V voltage input, in order to prevent your computer from being unusable when traveling abroad or smoking when connecting to AC220V when returning to China.
2. Be sure to understand the output voltage and current of your power adapter!
It is best to be completely consistent with the nominal voltage and current of your power supply. As for the brand, there is not much difference in quality between different brands, because many brands of power supplies may come from the same power supply manufacturer and are OEM produced.
Although the output voltage and current of the power supply have a small range of variation, the protection points for overcurrent and overvoltage are precisely tested and set by the manufacturer. Different computers have different load resistance values. Once certain circuit faults occur in the computer, the power adapter can play a protective role. If a power adapter with non nominal voltage and current is selected, its overvoltage and overcurrent protection point settings may not be the same, which may not protect the computer.
3. Be clear about the aperture size of the DC output line of your power adapter, as well as the positive and negative differences inside and outside. Don't buy it and only realize that it can't be plugged in.
Ac/Dc Switching Adapter, Folding input and output characteristics
1. Input Voltage: PLUG MINIMUM NORMAL MAXIUM, 100VAC 50/60Hz 110VAC 50/60Hz 264VAC 50/60Hz
2. Output Voltage: PLUG LOADING NO LOAD RIPPLE, 24VDC 7.5A 24VDC ± 7.5% 240mVP-P MAX
3. Input Current: NO LOAD AC 100V 50/60Hz AC 110V 50/60Hz AC 264V 50/60Hz
4. Input Power: 0.5 W maximum without load, at input voltage of 100-240VAC 50/60 Hz. Load: 200W maximum.
5. Efficiency: 90% MIN. AT RATED Input and OUTPUT
6. Temperature Rise: 65 ℃ MAX.
7. Insulation Resistance: 500VDC100 M Ω MIN.
8. Voltage Withstand Test: 5mA 3000 VAC for 1 minute, between input and output, input and casing for 1 minute. When selecting to increase the voltage withstand by 5%, the application time is 1 second.
9. Inrush Current: PEAK INRush Current SHALL BE LIMITED 15A FOR A COLD START
4. 9-1 Power factor: 0.91 MIN.
FBelec Dc To Dc Charger, 12v2a power adapter is a professional R&D team that integrates services, focusing on high quality, fast charging, and fast charging.
Come and visit the factory, fast installation, and focus on power R&D and manufacturing for 20 years.
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AC DC Adapter & Switching Power Supply Manufacturer & Supplier
Switching Power Supply can switch 220V / 110V to 1V-96V for use.
Provide current protection, constant voltage, constant current…etc relative electric reliability.
Provide AC pin include UL, EU, SAA, UK & CN for common use.
Input range : 110V – 240V
Generally speaking, the commonly used low-voltage AC switching power adapter rectifies 220VAC electricity directly into an AC voltage of around 300V after passing through an EMI filter. The circuit controls the switching tube for high-speed conduction and cutoff, and then converts it into high-frequency AC electricity to supply to the transformer for voltage transformation. This generates one or more sets of voltage required, which is then rectified into the required voltage of AC electricity.
The AC/DC switching power adapter chip (or module) can be made into a basic switching power adapter by combining some resistive and capacitive components and a switching transformer.
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