CONTROL APPARATUS,申请号USD3671807-传众专利搜索

CONTROL APPARATUS

申请公布号：US3671807(A)

申请号：USD3671807

申请日期：1970.12.07

申请公布日期：1972.06.20

申请人：

PERIPHERAL SYSTEMS CORP.

发明人：LEE J. MILLIGAN

分类号：H02H3/10;H02H7/12;(IPC1-7):H02H7/00

主分类号：H02H3/10

摘要：Apparatus for controlling the application of power from an alternating current source to a load. The apparatus includes a high power triac switch that is in circuit with the source and the load is operated from a flip-flop by a low level start switch. Closure of the start switch enables a power supply which applies bias to the flip-flop and operates a controller to provide a common potential return for the flip-flop and other constituents when the magnitude of the alternating current source signal is below a prescribed level. This triggers the triac to establish a low impedance path between the source and the load. Excess voltage and current conditions are sensed to cause a change in states of the flip-flop and turn off the triac switch when either an overcurrent or an overvoltage condition is encountered.