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.
申请公布号
WO2012047387(A2)
申请公布日期
2012.04.12
申请号
WO2011US48713
申请日期
2011.08.23
申请人
COOPER TECHNOLOGIES COMPANY;KLETTI, DANIEL, RIAN;KROMREY, TIMOTHY, MARK