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            electronics components ac adaptor

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            <p>  UL power cord plug: 120V 50/60Hz divided into two core wire, three core wire and polar, non-polar, the United States of America power supply plug copper sheet must have a rubber cover;Two - core printed wire represents the wire;The big polarity pin is zero line, the small pin is fire line (power line concave and convex surface is zero, line circular surface is fire line).</p> <p> UL power lines include NISPT-2 double insulated flat wire, SPT-1W single insulated flat wire with groove, SJTW waterproof power line, SJTO oil-proof power line, etc.Their criteria are as follows.<o:p></o:p></p> <p> 1.NISPT-2: NISPT represents double-layer insulation, with two surface core insulation and outer insulation.<o:p></o:p></p> <p> <o:p> </o:p></p> <p> 2.XTV and SPT: represent a single layer of insulation, with two core wires on the -2 surface (the wire body is grooved, and the outer insulation is directly covered with copper conductor).<o:p></o:p></p> <p> <o:p> </o:p></p> <p> 3.SPT-3: represents single-layer insulated ground wire, -3 represents three-core wire (the wire body is grooved, the ground wire in the middle is double-layer insulation).<o:p></o:p></p> <p> <o:p> </o:p></p> <p> 4.SPT and NISPT are flat wire, while SVT is circular wire with double insulation, core insulation and outer insulation.<o:p></o:p></p> <p> <o:p> </o:p></p> <p> The above is the standard of UL power cord. AC power cord is mainly used for AC power supply, while DC power supply is for DC power supply.<o:p></o:p></p> <p style="text-align: center;"> <img alt="" src="/inc/uploads/ckeditor/123(19).png" style="width: 247px; height: 135px;" /></p> <p style="text-align: right;"> SUKI<br /> 2020-11-4<br /> <br />  </p> <p style="text-align: center;"> <span style="color:#fff0f5;"><span style="background-color:#f00;"> 声明: Disclaimer: This article comes from individual, KRECO has the right of final interpretation.  </span></span></p>