发明名称 |
Low leakage fuse blown detection circuit |
摘要 |
A fuse blown detection circuit for use in conjunction with the control transistor output circuits of a programmable controller which provides low leakage after the fuse is blown. The detection circuit comprises a pair of voltage dividers and a diagnostic triggering device forming an H-bridge network connected across the terminals of the fuse and a blocking diode. When the fuse is blown the voltage levels defined by the dividers change to activate the trigger device and enable a diagnostic signal indicative of the fuse blown condition while the blocking diode prevents current flow back through the control transistor and output circuit.
|
申请公布号 |
US5378931(A) |
申请公布日期 |
1995.01.03 |
申请号 |
US19930040696 |
申请日期 |
1993.03.31 |
申请人 |
ALLEN-BRADLEY COMPANY, INC. |
发明人 |
BOLDA, DANIEL;HAVEY, MICHAEL R.;GIBART, ANTHONY G. |
分类号 |
H02H3/04;(IPC1-7):H02H3/24;H05B41/29 |
主分类号 |
H02H3/04 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|