Power shutdown apparatus
First Claim
1. A system having a processor board with a processor, a backplane board, a power source and an input/output board, the processor board and the input/output board being removably insertable in respective sockets disposed on the backplane board, the system comprising:
- an interlock pin disposed on at least one of the processor board and the input/output board, said interlock pin being electrically connectable to a ground terminal when either the input/output board or the processor board is removably inserted without misalignment in the socket disposed on the backplane board;
a receptacle for said interlock pin, said receptacle comprising a portion of the socket disposed on the backplane board;
a first diode, said first diode being electrically connectable to one of said receptacle and a voltage supply;
a second diode, said second diode being electrically connected to a trip circuit, said trip circuit being actuatable upon reaching a pre-determined temperature limit of the processor; and
wherein said first diode and said second diode are electrically tied together for providing a shutdown signal.
4 Assignments
0 Petitions
Accused Products
Abstract
A computer system having a power supply, a backplane board and a system board includes a power supply shutdown apparatus. When an interlock pin disposed on an edge connector of the system board is not seated properly in a corresponding interlock-pin-receptacle forming a portion of a system board socket disposed on the backplane board, a shutdown circuit is actuated to produce a shutdown signal which is used for electrically isolating the power supply from the system board.
3 Citations
7 Claims
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1. A system having a processor board with a processor, a backplane board, a power source and an input/output board, the processor board and the input/output board being removably insertable in respective sockets disposed on the backplane board, the system comprising:
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an interlock pin disposed on at least one of the processor board and the input/output board, said interlock pin being electrically connectable to a ground terminal when either the input/output board or the processor board is removably inserted without misalignment in the socket disposed on the backplane board; a receptacle for said interlock pin, said receptacle comprising a portion of the socket disposed on the backplane board; a first diode, said first diode being electrically connectable to one of said receptacle and a voltage supply; a second diode, said second diode being electrically connected to a trip circuit, said trip circuit being actuatable upon reaching a pre-determined temperature limit of the processor; and wherein said first diode and said second diode are electrically tied together for providing a shutdown signal. - View Dependent Claims (2, 3)
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4. A computer system having a power supply, a backplane board and a system board, said computer system comprising:
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a system board socket disposed on the backplane board, said system board socket for removably receiving the system board, said system board socket comprising an interlock-pin-receptacle coupled to a voltage supply; an interlock pin disposed on the system board, wherein said interlock pin is electrically connected to a ground terminal, said interlock pin for shunting said voltage supply to said ground terminal when the system board is received without a misalignment at said system board socket; and a shutdown circuit electrically connected to said voltage supply and said interlock-pin-receptacle, said shutdown circuit for detecting an open circuit between said interlock pin and said ground terminal, said shutdown circuit including a logic element which receives a first signal from said interlock-pin-receptacle when said interlock pin is misaligned with said interlock-pin-receptacle and a second signal indicative of a temperature trip associated with a processor, said logic element configured to produce a shutdown signal responsive to at least one of said first and second signals. - View Dependent Claims (5, 6, 7)
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Specification