A detection and alarm circuit for protection of electronic components includes a fan motor current sensing resistor for producing a pulse that is amplified and introduced to a frequency-to-voltage converter for generating a filtered and processed voltage level for application to a voltage comparator. A reference voltage circuit supplies a voltage level to the comparator for matching with the filtered and processed voltage level and depending on the mismatch, an output signal is introduced to a transistor switch for operating an alert alarm device.
申请公布号
US5534854(A)
申请公布日期
1996.07.09
申请号
US19950500457
申请日期
1995.07.10
申请人
BRADBURY, ROD J.;BARNARD, WILLARD C.;WYSONG, JOEL F.
发明人
BRADBURY, ROD J.;BARNARD, WILLARD C.;WYSONG, JOEL F.