公共端符号
![表2-19 导线,端子和导线的连接符号](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E8334A5EC4B75036A4647EF273F5CA29E236E9ED87E17156E0E27237A696C12D6E3BF111835BA8D29B05BF2D44EA46E3F0D4F9278F89E4B77A13933D9C9770BE356A18A7EBFAF7A45FE1A909CB46996E4A7)
表2-19 导线,端子和导线的连接符号
图片尺寸1748x963![公共信息图形符号](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E91762B85B7F413690332078D60FE5F50F984FE36FA8E64B731E6677549407FA73AC2DD89E27014F31F9F8FB70D8BCE41E5A44C83BF253EA149986DFAB7893CDB848AEF0C8A4DFB3E02400B7E61952F38D)
公共信息图形符号
图片尺寸549x324![黑色网络端口-电缆插座图标隔离](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83B566D65D9FAA127FD3CACF50654E3B8EC3D9EC11344BB5222A5BFE9FEB3444894E9A3CA047E088EC15A28121090ADB0337A096779AEBD66BDB17684BB183FB629636D2DFF3378B9FE18A47B7B3FF6EA7)
黑色网络端口-电缆插座图标隔离
图片尺寸1100x1100![新版中国城市公共交通标准](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E91BBBF840CD2502EFDA9793EE4A13EC118ECF43E229E7A2A0668DD4C1E8880AF328BFDA83EB7D22B04BAB75229308208754DB361AD86E4594CC54245B444A692322CBF65BFB9B7AC0B3FA03AE419E4668)
新版中国城市公共交通标准
图片尺寸500x413![plc基础知识学习 汇点式输入接线 公共端 公共端 公共端 直流模块](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E9E049C5EAC2DE532F3D58044AE84C73BCE6D7FB6C8C0714488175CF4C49EF77FC5060EBB1F31760BDA1735AAB6A2FB762D2AA54F15FB416740C3BFD23FE4BF4ADF47171EA3CA75442D481A4FBAF3916DC)
plc基础知识学习 汇点式输入接线 公共端 公共端 公共端 直流模块
图片尺寸1080x810![gnd就是公共端的意思,也可以说是地,但这个地并不是真正意义上的地.](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A7325B68125B3BA9419841E0CCFAEFEA990D9128F8B7A3CB31001FE85D587749F0FE45A677FFD07719A82340F6E73AEA055F735089FC4CF02CAD1AF6DF3624FB750FAA56CAFB4DFD31EE331D6D06E9DC179)
gnd就是公共端的意思,也可以说是地,但这个地并不是真正意义上的地.
图片尺寸640x210![继电器输出接口处印有:常开,公共端,常闭,分别对应继电器的常开,公共](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A737FECB6E84F6DF2DE1A16D84412EA5A68A9A00F81FE1B49D8DC23A0E771D05C9DAB1525F0A4CCCFB96659551E370BD20231F3AED2F53217A1A5B046A11EFE44A39489BF2D9A8E3B54CF97F8971A896027)
继电器输出接口处印有:常开,公共端,常闭,分别对应继电器的常开,公共
图片尺寸635x496![常开常闭符号及图片_常开常闭公共端符号](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83C778EB7679B45B29742B2C261480636E8BD4C88FFBF3BD609150675BE85D96D0C43EFE4F4968022E29CC604BCFB9C6B1CE400150488F2D69B7C1E5C13E84E0DA5032E2F5DA70D189417D8CF56DC2FD36)
常开常闭符号及图片_常开常闭公共端符号
图片尺寸600x423![如将7个发光二极管的负极接一起做公共端输出](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A739179CE1D024C6AB1D60A357A8B011C85AE279500CA6C79C7A375F01EC8D76447BB1E29241D4F628310F2FD78367D832A7CA53D5B2082E7A3AD02D4BEAA934E5A56DAA29423C48B252D4482B332C2088C)
如将7个发光二极管的负极接一起做公共端输出
图片尺寸600x329![是方形的而却还单独分割开,所以这个引脚就为公共端,见下图](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E919CF147C2387D637ADD06ED015E67B2A7FD5A1BDC9F713FD20098CB125F4D090066A557CBC5E1145B1B7874327ED91C10678E784C3116F575D38C0C7B7A120745BBA82F189611772C8CC515F19B70868)
是方形的而却还单独分割开,所以这个引脚就为公共端,见下图
图片尺寸294x205![注:段选输入方式直接决定了这一位输出的字形共阴型阴极为公共端,阴极](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83E74642F2FF7046AD3500EE82C9C3CC9BDB7625670CEF800CCFDE5FA7231045F6256090F8432CB969363A8797F6464F9A9EC8DF507899330F2D5D0DBDD12B3A62886764880B70A791B208B98E59F90503)
注:段选输入方式直接决定了这一位输出的字形共阴型阴极为公共端,阴极
图片尺寸1073x581![说到地,"公共端"或"回流端"其实更贴切,除非你的电路连接到墙上插座的](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E960A6ED4628BCCD2075414FA5F0277B20325B924B1680ECDA4B5A9367626ED95CFEF267785E94F3DB77E90EE23B87D724445ED3B798D76A82D20861A81473FD78F72584DA65052E50C1D827DF52037AFA)
说到地,"公共端"或"回流端"其实更贴切,除非你的电路连接到墙上插座的
图片尺寸640x410![答:下面通过图片示例介绍仪表各接线符号的含义.](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A731AECB214EEFA49DDD99AC3848CAB3F4BEF2CAA478389DE073192384C294CF85F115F54D6574359E75A90BD2E6BB49127C12C969F338692645023454F543B05887EA2AD6383D1E5056933894358152F50)
答:下面通过图片示例介绍仪表各接线符号的含义.
图片尺寸1130x871![可调电源正极 ==> 开关公共端 >开关常开端 ==> vcc如上图,外电源通过](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A732B37C92F1E857C66D3351BA975054F8C43154833E9A368C17CBB7EA9DB5704B685B77E23FA3B4625D6D2D9A38B1CA8E63AAE3A105ED68B3945BDC4A7F379330443827B0D3E592CAEE38A6FA66C14AD72)
可调电源正极 ==> 开关公共端 >开关常开端 ==> vcc如上图,外电源通过
图片尺寸393x299![3,接地gnd,公共端com](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E837C6965D6C2297C87CC19637CF861D047CF8D6C8074B7D6FA6C54403A4D717F52F1668D814BF9A522E3222DCAC23EB6629A7C41BEA332D5BABB7B743C876FBF41DD56450B1389108809D3F198D1A38F0E)
3,接地gnd,公共端com
图片尺寸1007x459![用万用表的r×1k挡测ld部分的正向阻值,即黑表笔接公共端b,红表笔接](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73BA446CAD9078E5612C967A0161C092A321110425EC57504B24F42646D96731F1B793E276FD251F100E4615E4E8125ACE9564684FF0329400679CFB2A0F419539E145F192F95C6D5701D0D7E4C109EC1A)
用万用表的r×1k挡测ld部分的正向阻值,即黑表笔接公共端b,红表笔接
图片尺寸495x191![中间继电器上常开点常闭点与公共端](https://imgs.wantubizhi.com/img/A1A61BAA66193547F3A6DD7D8EE527E960CBB41BE811C020C2DE213FE54CB5B526BEBAB93C541DDED7CCACA030B320842334EDB7D95958379F8B427099B4DB1CF8528EDBC1D9F3A695F0577164263C70247B1396CA821EA4A8876E70FDB2489B)
中间继电器上常开点常闭点与公共端
图片尺寸454x175![继电器有常开触点和常闭触点,动触点就是一个公共端,这是直流继电器](https://imgs.wantubizhi.com/img/735A5D1F980B52A636CC46F12F2D1A73BA2A3772E2AB0492A48F333A1B9D27CC1B8024A9C0132E9755E450687649F8E2798248D41C0FE7E6BFC5C3BE098ECA2E805E88F6C258ECF5A1A9849D1D7D552B87B26B7E00D31FDB45B253858DD12D40)
继电器有常开触点和常闭触点,动触点就是一个公共端,这是直流继电器
图片尺寸826x314![这样将所有的公共端用gpio控制,不再像静态显示那样,公共端接电源.](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E8381DB64DCE2B7006D1B689BEAAA51B6C6DF3BC9741AABFF0EDF5C1AA7FCC0B7209843C28E9E7CA2A842E5CA708A0CF4B52BAFB49305067BF48DDCB24626D8722D9BFA3FD4900F9E7B200E1E8F6181220E)
这样将所有的公共端用gpio控制,不再像静态显示那样,公共端接电源.
图片尺寸2401x734![三端开关模型法ppt](https://imgs.wantubizhi.com/img/ADDA3C5D760C6828B77B505A29D43E83F30586685DF5E22B50DF1BE1B59E703F14979CCF34CF574F4CAB5FC2151089C3314E5AE4263F4D935F0214B6D753286BA314E0F7152B52CFD87579BDE5EA210A4CEA595E177064014F38B9C4A79300B8)
三端开关模型法ppt
图片尺寸1105x808