公开(公告)号：EP2622725A4

公开(公告)日：2018-02-14

申请号：EP11831119

申请日：2011-08-23

申请人： COOPER TECHNOLOGIES CO

发明人： KLETTI DANIEL RIAN ,  KROMREY TIMOTHY MARK

IPC分类号： G05F3/16 ,  G05F3/18

CPC分类号： G05F3/18

摘要： A universal-voltage discrete input circuit uses a high voltage depletion-mode field effect transistor in combination with a low-voltage, adjustable precision shunt regulator and an isolation circuit for interfacing a low voltage digital logic circuit to a switched external voltage ranging from about 7 volts to about 1000 volts AC or +/− DC, at a low fixed current. In addition to the wide input voltage range accepted at a uniform low current value, very high voltage isolation is provided between the external voltage and the low voltage digital logic circuit, and elimination of ground loops and common mode noise.