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Huaqiang Security Network News ]
Two questions for everyone to explain, what is an ac adapter; the standard of the second ac adapter
First, what is the ac adapter, AC adapter (AC Adapter), AC is the meaning of AC, AC adapter is AC power. AC adapters are used in many electrical appliances. Just calling the AC adapter in commercial products is actually 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. Traced 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 of each lead terminal of the product can be 2 kg, the duration is 60 seconds, no looseness, blocking, or other damage.
2, drop test: the product from the height of 90CM, XYZ once in each direction, fell after the thickness of 1 CM pine board surface, no abnormalities, insulation resistance test, minimum 10M ohms. Refer to GB/T 4857.
3.
Wire swing test: The wire hoisting weight is 200 grams, and the left and right swing angle is 120 degrees. After 300 rounds, it must be turned on. 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: no load 0.5 W maximum, at input voltage 100-240VAC 50/60 Hz. Load: 200W maximum.
5, EFFICIENCY efficiency: 90% MIN. AT RATED INPUT AND OUTPUT
6, TEMPERATURE RISING temperature rise: 65 ° C MAX.
7, INSULATION RESISTANCE insulation resistance: 500VDC100 MΩ MIN.
8. Withstand voltage test: 5mA 3000 VAC time 1 minute, between input and output, input and housing, time is one minute, when selecting to increase the withstand voltage by 5%, the application time is 1 second.
9. INRUSH CURRENT Impulse 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 °C TO + 45. 5 °C.
2. Storage ambient temperature range: -40 °C TO + 75 °C.
3. Heat resistance: After testing, the product is placed in a high temperature box of 105 °C ±3 °C. After 16 hours, the test must be carried out. The product must meet the requirements of 4.7 voltage withstand test. Insulation resistance: 500VDC is not less than 10 M ohms, between input and output, input and housing.
4. Moisture resistance: It should be placed for 8 hours under the condition of ambient temperature of 40 °C ± 2 °C and relative humidity of 90% ~ 95%. After taking out for 10 minutes, the product should meet the requirements of 4.7 pressure resistance, insulation resistance: Input to output, at 500VDC, minimum 10M ohms.
reliability
Rated full load, operating temperature 25 °C. Product life is within 30,000 hours.
protection
1. Current protection: The product has a built-in current fuse, type 250V 3A, which is fixed in the input circuit.
2, short circuit protection: with resistance to continuous short circuit and automatic recovery.
an examination
1. 100% inspection items: no-load voltage, load voltage, ripple voltage, input current, withstand voltage test and general visual inspection.
2. Sampling inspection In addition to 100% inspection items, insulation resistance and audible sound inspection are also included.
3. Submit each batch of sample inspection report and 100% pressure test report.
4, sampling inspection project level: MIL-STD-105E II fatal shortcomings 0, main disadvantages 0. 25, minor defects 1. 0.
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