IC693PW***4
IC693PW***4
屏蔽技术
采用屏蔽技术可以有效防止电场或磁场的干扰。屏蔽又可分为静电屏蔽、电磁屏蔽和低频磁屏蔽等。
4.3.1静电屏蔽
用铜或铝等导电性良好的金属为材料,制作密闭的金属容器,并与地线连接,把需要保护的电路置于其中,使外部干扰电场不影响其内部电路,反过来,内部电路产生的电场也不会影响外电路。例如传感器测量电路中,在电源变压器的初级和次级之间插入一个留有缝隙的导体,并把它接地,可以防止两绕组之间的静电耦合。
4.3.2电磁屏蔽
对于高频干扰磁场,利用电涡流原理,使高频干扰电磁场在屏蔽金属内产生电涡流,消耗干扰磁场的能量,涡流磁场抵消高频干扰磁场,从而使被保护电路免受高频电磁场的影响。若电磁屏蔽层接地,同时兼有静电屏蔽的作用。传感器的输出电缆一般采用铜质网状屏蔽,既有静电屏蔽又有电磁屏蔽的作用。屏蔽材料必须选择导电性能良好的低电阻材料,如铜、铝或镀银铜等。
IC693PW***4
手机:18030229050
电话:0592-5709821
传真:0592-5709828
*** 1878187406
邮箱 1878187406@***.com
CACR-SR10BB1AF SERVOPACK CONTROL
CACR-SR10BB1AM SERVOPACK CONTROL
CACR-SR10BB1BF SERVOPACK CONTROL
CACR-SR10BB1CS SERVOPACK CONTROL
CACR-SR10BE12F SERVOPACK CONTROL
CACR-SR10BE12G SERVOPACK CONTROL
CACR-SR10SZ1SF SERVOPACK CONTROL
CACR-SR12BA SERVOPACK CONTROL
CACR-SR15BB1AM SERVOPACK CONTROL
CACR-SR15BB1BF SERVOPACK CONTROL
CACR-SR15BB1BM SERVOPACK CONTROL
CACR-SR15BB1CS SERVOPACK CONTROL
CACR-SR20BB1AF SERVOPACK CONTROL
CACR-SR20BB1AM SERVOPACK CONTROL
CACR-SR20BB1BF SERVOPACK CONTROL
CACR-SR20BE12G SERVOPACK CONTROL
CACR-SR20TB6BM SERVOPACK CONTROL
CACR-SR30BB1AM SERVOPACK CONTROL
CACR-SR30BE12G SERVOPACK CONTROL
CACR-SR30SB1ASY SERVOPACK CONTROL
CACR-SR30SB1BSY SERVOPACK CONTROL
CACR-SR44BB1AF SERVOPACK CONTROL
CACR-SR44BB1AM SERVOPACK CONTROL
CACR-SR44SZ1SDY SERVOPACK CONTROL
CACR-SR60BB1AM SERVOPACK CONTROL
CACR-SRA5AC1ER 50W 200V SERVO
CACR-W37-FJ2BER AC SERVOPACK
CACR-W37-FJ2ER AC SERVOPACK
CDBR-4045 60HP 460V BRAKE
CDBR-4045B 60HP 460V BRAKE
CDBR-4220 300H 460V BRAKE
CDBR-4220B 300H 460V BRAKE
CDBR-H45H 616H BRAKE UNIT
CDMR-ZII VARISPEED 505