source:Industry News Popular:adapter release time:2021-01-26 19:51:33 Article author:sznbone
Two questions are explained for everyone, one is what is an ac adapter; two, the standard of an ac adapter
First of all, what is an ac adapter, AC Adapter (AC Adapter), AC means alternating current, AC adapter is AC power. AC adapters are used in many electrical appliances. It's just called the AC adapter in commercial products. In fact, it is an AC power supply. In the industrial field, we call it a switching power supply, but the appearance is a little different.
ac adapter standard
1. Trace back to safety standards EN60335, EN60950, UL60950, AS/NZ60950, EN61558, J60950GB4943, GB17625; electromagnetic compatibility CISPR22, Class B, EN55022, FCC insulation class B.
2, 19V4.75A power supply, model: FY1904750 trademark: Fuyuang
1. Stress test: The axial tension that each lead terminal of the product can withstand is 2 kg, and the duration is 60 seconds, without loosening, blocking, or other damage.
2. Drop test: The product is dropped on a pine board with a thickness of 1 CM from a height of 90CM, once in each direction of X-Y-Z, and there is no abnormality. The insulation resistance is tested, and the minimum is 10M ohms. Refer to GB/T 4857.
3. Wire swing test: The wire is hoisted with a weight of 200 grams, the swing angle is 120 degrees, and it must be turned on after 300 rounds. Refer to UL-817/JISC8306.
Input and output characteristics
1. INPUT VOLTAGE input voltage:
PLUG MINIMUM NORMAL MAXIMUM
100VAC 50/60Hz 110VAC 50/60Hz 264VAC 50/60Hz
2, OUTPUT VOLTAGE output voltage:
PLUG LOADING NO LOAD RIPPLE
24VDC 7.5A 24VDC±7.5% 240mVP-P MAX
3, INPUT CURRENT 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 an input voltage of 100-240VAC 50/60 Hz. Load: 200W max.
5, EFFICIENCY efficiency: 90% MIN. AT RATED INPUT AND OUTPUT
6, TEMPERATURE RISING temperature rise: 65℃ MAX.
7, INSULATION RESISTANCE insulation resistance: 500VDC100 MΩ MIN.
8. Withstand voltage test: 5mA 3000 VAC for 1 minute, between input and output, between input and shell, for one minute, when the withstand voltage is increased by 5%, the application time is 1 second.
9, INRUSH CURRENT impact current: PEAK INRUSH CURRENT SHALL BE LIMITED 15A FOR A COLD START
4. 9 -1 power factor: 0.91 MIN.
surroundings
1. Working environment temperature range: -29 ℃ TO + 45. 5 ℃.
2. Storage environment temperature range: -40 ℃ TO + 75 ℃.
3. Heat resistance: The tested product should be placed in a high temperature box at 105 ℃ ±3 ℃, after 16 hours, the product must meet 4.7 withstand voltage test requirements, insulation resistance: 500VDC not less than 10 M ohms, between the input and output, input and housing.
4. Humidity resistance: Place it for 8 hours under the conditions of an ambient temperature of 40 ℃ ± 2 ℃ and a relative humidity of 90% to 95%, and take it out for 10 minutes to test. The product must meet 4.7 withstand voltage requirements. Insulation resistance: Input to output, under the condition of 500VDC, the minimum is 10M ohms.
reliability
rated full load, operating temperature 25 ℃. Product life is within 30,000 hours.
Protect
1. Current protection: The product has a built-in current fuse, the type is 250V 3A, fixed in the input circuit.
2. Short-circuit protection: With resistance to continuous short-circuit and automatic recovery capabilities.
an examination
1, 100% inspection items: no-load voltage, load voltage, ripple voltage, input current, withstand voltage test and general visual inspection.
2. In addition to 100% inspection items, the sampling inspection also includes insulation resistance and audible sound inspection.
3. Submit each batch of sampling inspection report and 100% withstand voltage test report.
4. Sampling inspection item level: MIL-STD-105E II fatal defect 0, major defect 0.25, minor defect 1.0.
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