发明授权
- 专利标题: Intrinsically safe electrostatic assist units
- 专利标题(中): 本质安全型静电助力装置
-
申请号: US89309申请日: 1979-10-30
-
公开(公告)号: US4360850A公开(公告)日: 1982-11-23
- 发明人: Velmar E. Howard , Keith K. Klett , Ernest A. Sammann , Joseph T. Verdeyen
- 申请人: Velmar E. Howard , Keith K. Klett , Ernest A. Sammann , Joseph T. Verdeyen
- 申请人地址: IL Danville
- 专利权人: HurletronAltair, Inc.
- 当前专利权人: HurletronAltair, Inc.
- 当前专利权人地址: IL Danville
- 主分类号: B41F9/00
- IPC分类号: B41F9/00 ; H02H3/02 ; H02H3/087 ; H02H3/44 ; H02H9/00
摘要:
A high-voltage crowbar circuit continually senses the load impedance and crowbars the output voltage applied to a load if the load impedance falls below a selected value. A differentiator circuit at the load senses variations in load voltage and can trigger the crowbar operation if the voltage variation as a function of time exceeds a preselected load.
公开/授权文献
- USD423734S Fodder trough 公开/授权日:2000-04-25
信息查询