The invention is characterized in that the socket and the plug can be tightly jointed to improve the joint strength and avoid incorrect manipulation of positive-negative power supply can be avoided.
本发明可使插头与插座紧固联接，提高联接强度及避免正负电源误操作。
Ensure that the positive and negative power supply leads are correctly connected to the corresponding positive and negative controller leads, otherwise the controller will be burned.
严格保证电源正负接线与控制器的正负引线对应连接正确，否则将会烧坏控制器。
The variable polarity power supply can satisfy the welding process of the aluminum and aluminum alloy by adjusting the current frequency, positive and negative current time and amplitude value.
调节正负半波的幅值、频率及占空比能满足铝及铝合金的焊接工艺要求。
During choose the direct current power supply, pay attention to the negative and positive.
选用直流供电时，注意正负极标识。
The utility model can be used as a positive or negative unipolarity half-tunable DC power supply apparatus.
本实用新型亦可作为正或负单极性半可调直流电源装置使用。
Depending on the polarity of an ESD event you apply to the circuit's input connector, its high-voltage spike discharges through diode D1A or D1B into the positive or the negative power-supply rail.
依靠ESD适用电路输入连接器的极性，其高电压放电通过二极管d 1a或d1b进入供电正向或负向电源。
Surface activation: activation plating must take positive power supply, plating document connected with negative voltage 8-15v, time, 60-90s.
表面活化处理：活化时镀件必须接电源正极，化工泵镀笔接负极，电压8 - 15v，时间60 - 90s。
Surface activation: activation plating must take positive power supply, plating document connected with negative voltage 8-15v, time, 60-90s.
表面活化处理：活化时镀件必须接电源正极，化工泵镀笔接负极，电压8 - 15v，时间60 - 90s。
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