Title:
【考案の名称】極性交換装置
Document Type and Number:
Japanese Patent JP3068095
Kind Code:
U
Abstract:
An automatic polarity exchange circuit with current detection feedback capabilities includes a forward polarity detector connected in parallel with a reverse polarity detector to respectively drive a positive switch or reverse polarity switch in the automatic polarity exchanger pursuant to the outcome of the polarity detection, as performed on the switches. Meanwhile, the hypersensitivity effect due to a control operation is prevented by a time delay caused by a series-on delay circuit integral with the automatic polarity exchange switch assembly and a current divider switching circuit that is controlled by a load current detection circuit and connected in parallel with the series-on delay circuit, which turns to a conducting state once the working current produced by a correct linkage of polarities on the power supply side with the loading side yields an output, to the effect that: (1) the divider switching circuit functions as a replacement for the series-on delay circuit so that the automatic polarity exchange switch assembly will continue operation; (2) at which time the series-on delay circuit is reset to the stand-by state; and (3) when the load breaks open or the load current scales down, the automatic polarity exchange switch assembly is cut off to cut off power to the load, and the whole system resets itself.
Inventors:
Taehwa Yang
Application Number:
JP770999U
Publication Date:
April 21, 2000
Filing Date:
October 12, 1999
Export Citation:
Assignee:
Taehwa Yang
International Classes:
H02H11/00; G01R19/14; G01R31/00; H02H3/06; H02H3/18; H02J7/00; (IPC1-7): H01H9/54
Attorney, Agent or Firm:
Masaki Hattori