AN APPARATUS FOR INTERCEPTING A POWER INPUTTED TO ABOARD IN A SWITCHING SYSTEM

摘要

Electrical the subject innovation is caused by over-current is drawn to the board from the external interface by incorrect mounting or insertion if relates to a board input power-off device in the exchange, in particular mounting the board from the exchange to the white board or inserting the cable to the backboard board in the exchange to the outside so as to protect the chip of the matching board from impact blocking the input power to be input to the board relate to the input power-off device.; In the prior art, when installing the board in the case of incorrect mounting test when extender boards in the board or a cable or when the working position changing cable to set up the system incorrectly, given as to a -48V supply pin position error for any one pin of the board does not have the connecting pin between an excessive current to the outside of the chip matched boards flow so subjected to electrical shock, there is a problem that external matching chip is damaged.; The subject innovation, so the board is incorrectly mounted, or in the exchange cable protects the external matching chips on the board by cutting off in an unexpected situation, automatically the power input to the board is inserted incorrectly, damage to the external matching chip of the board due to the over-current there is an advantage that can be prevented.