Over-temperature protection devices, applications and circuits
    11.
    发明申请
    Over-temperature protection devices, applications and circuits 审中-公开
    过温保护装置,应用和电路

    公开(公告)号:US20060273876A1

    公开(公告)日:2006-12-07

    申请号:US11144238

    申请日:2005-06-02

    CPC classification number: H05K1/0201 H05K2201/0308 H05K2203/175

    Abstract: Over-temperature protection devices, over-temperature applications on substrates, such as printed circuit boards, and over-temperature protection circuits, e.g., over-temperature protection in combination with a fuse or heater are provided. In various embodiments a shape memory alloy member is used, which can either break electrical contact with a conductor (open a circuit) or make electrical contact with a conductor (close a circuit). Upon opening a first circuit, the member can move to contact another conductor and complete a second circuit. The member can close a circuit, which is in parallel with a fused load, to provide a short circuit path that opens a fuse upon an over-temperature condition occurring, e.g., within an electrical device such as a cell phone or battery. Or, the member can be provided in parallel with a heater that energizes upon an overcurrent condition, triggering the member to open a circuit.

    Abstract translation: 提供过温保护装置,诸如印刷电路板的衬底上的过温应用以及过温保护电路,例如与保险丝或加热器组合的过温保护。 在各种实施例中,使用形状记忆合金构件,其可以断开与导体的电接触(打开电路)或者与导体(闭合电路)进行电接触。 在打开第一电路时,构件可以移动以接触另一导体并完成第二电路。 该构件可以闭合与熔融负载并联的电路,以提供短路路径,该短路路径在例如在诸如手机或电池的电气装置内发生的过温状态下打开熔断器。 或者,该构件可以与加热器并联设置,该加热器在过电流状态下通电,触发构件打开电路。

    Method for reworking a multi-layer circuit board using a shape memory
alloy material
    13.
    发明授权
    Method for reworking a multi-layer circuit board using a shape memory alloy material 失效
    使用形状记忆合金材料对多层电路板进行再加工的方法

    公开(公告)号:US5925298A

    公开(公告)日:1999-07-20

    申请号:US494509

    申请日:1995-06-26

    Abstract: A method and apparatus for forming a rigid circuit board has a circuit board with a reduced thickness in a bend region. The bend region may have several layers of laminate and conductive material. The circuit board is heated to the glass transition temperature which allows the circuit board to become flexible. The apparatus has a clamping member and a stationary member. The clamping member uses a shape memory alloy actuator with a transition temperature about the same as the glass transition temperature of the laminate. The actuator is used to form the bend region to a predetermined shape around the stationary member. When the circuit board is cooled, the circuit board again becomes rigid in its predetermined shape.

    Abstract translation: 用于形成刚性电路板的方法和装置具有在弯曲区域中具有减小的厚度的电路板。 弯曲区域可以具有多层层压体和导电材料。 电路板被加热到允许电路板变得柔性的玻璃化转变温度。 该装置具有夹紧构件和固定构件。 夹紧构件使用形状记忆合金致动器,其转变温度与层叠体的玻璃化转变温度大致相同。 致动器用于将弯曲区域形成为围绕固定构件的预定形状。 当电路板被冷却时,电路板再次变成其预定形状的刚性。

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