source:Industry News Popular:adapter release time:2021-12-25 09:48:12 Article author:sznbone
1, input characteristics
Input voltage and voltage adjustment range.
Input frequency and frequency adjustment range.
rated input current. Refers to the current when the input voltage and output current are at rated conditions.
Input sag and momentary power failure. This is a state where the input voltage drops or breaks instantaneously, and is limited by the rated output voltage and current. The test indicators are voltage and time.
electric shock.
Leakage current.
efficient. Because this index is related to heat, efficiency should be considered when dissipating heat.
Whether to use 2PIN type or 3PIN type for input.
2, output characteristics
rated output voltage.
rated output current.
Output voltage adjustment rate.
Output current adjustment range.
ripple noise. Including the maximum ripple voltage; the maximum ripple noise voltage.
The fluctuation value of the output voltage caused by the instantaneous current fluctuation.
Function requirements
Overcurrent protection.
Overvoltage protection.
Input undervoltage protection.
Overheating protection.
Insulation resistance. Input terminal and shell; input terminal and output terminal; output terminal and shell.
Insulation voltage. Hit high voltage: between input and output, input and ground, and input AC, the high voltage value is established according to safety standards.
3, structure specifications
Shape conditions: such as the presence or absence of the outer packaging case.
Exterior dimensions and dimensional tolerances.
Cooling conditions and methods.
Interface location and logo.
The position of the operating parts (output voltage adjustable resistor, switch, indicator light) and the position of the prompt text.
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