公开(公告)号：US3689771A

公开(公告)日：1972-09-05

申请号：US3689771D

申请日：1970-12-01

Applicant: HONEYWELL INC

Inventor： SHARP ALEXANDER ,  ALLAN DONALD WILLIAM

IPC: H01H47/24 ,  G01D5/34

CPC classification number: H01H47/24

Abstract: Electric switching apparatus having an adjustable differential switching action. A two-state switching device, for instance a relay, assumes a state dependent on the response of a pair of photoelectric cells which, in dependence on the position of a movable vane, are illuminated by a lamp. The switching device is controlled by the cells through a circuit having a switching differential, that is exhibiting hysteresis or backlash, such that switching occurs only when both cells become shielded from the light or exposed to it. The two cells are movably mounted such that the distance the vane has to move to produce switching, and hence the differential switching action, is adjustable.

Abstract translation: 具有可调差分开关动作的电开关装置。 两状态开关装置，例如继电器，取决于一对光电单元的响应的状态，其依赖于可移动叶片的位置被灯照亮。 开关器件由电池通过具有开关差动的电路来控制，该电路具有滞后或反向间隙，使得只有当两个电池从光屏蔽或暴露于其中时才进行开关。 两个电池可移动地安装，使得叶片必须移动以产生开关的距离，因此差动开关动作是可调节的。