In a power supply control device, a switching device turns a main switch on or off to control supply of power via the main switch. When a battery supplies power to the switching device, a fuse is disposed in a first current path of an output current output from the switching device. A diode is disposed in a second current path of the output current different from the first current path. If a current flowing through the fuse increases to or above a first threshold, the fuse blows. If a current flowing through the diode increases to or above a second threshold, the diode blows.

An integrated circuit structure includes a first fuse line formed in a first metal layer; a second fuse line formed in the first metal layer; a first pair of fuse wings formed in the first metal layer on opposite sides of a first end of the first fuse line; a second pair of fuse wings formed in the first metal layer on opposites sides of a first end of the second fuse line; a third pair of fuse wings formed in the first metal layer on opposite sides of a second end of the first fuse line; and a fourth pair of fuse wings formed in the first metal layer on opposites sides of a second end of the second fuse line. The first and second pairs of fuse wings share a first common fuse wing and the third and fourth pairs of wings share a second common fuse wing.

An integrated circuit structure includes a first fuse line formed in a first metal layer; a second fuse line formed in the first metal layer; a first pair of fuse wings formed in the first metal layer on opposite sides of a first end of the first fuse line; a second pair of fuse wings formed in the first metal layer on opposites sides of a first end of the second fuse line; a third pair of fuse wings formed in the first metal layer on opposite sides of a second end of the first fuse line; and a fourth pair of fuse wings formed in the first metal layer on opposites sides of a second end of the second fuse line. The first and second pairs of fuse wings share a first common fuse wing and the third and fourth pairs of wings share a second common fuse wing.

An integrated circuit structure includes a first fuse line formed in a first metal layer; a second fuse line formed in the first metal layer; a first pair of fuse wings formed in the first metal layer on opposite sides of a first end of the first fuse line; a second pair of fuse wings formed in the first metal layer on opposites sides of a first end of the second fuse line; a third pair of fuse wings formed in the first metal layer on opposite sides of a second end of the first fuse line; and a fourth pair of fuse wings formed in the first metal layer on opposites sides of a second end of the second fuse line. The first and second pairs of fuse wings share a first common fuse wing and the third and fourth pairs of wings share a second common fuse wing.

An integrated circuit structure includes a first fuse line formed in a first metal layer; a second fuse line formed in the first metal layer; a first pair of fuse wings formed in the first metal layer on opposite sides of a first end of the first fuse line; a second pair of fuse wings formed in the first metal layer on opposites sides of a first end of the second fuse line; a third pair of fuse wings formed in the first metal layer on opposite sides of a second end of the first fuse line; and a fourth pair of fuse wings formed in the first metal layer on opposites sides of a second end of the second fuse line. The first and second pairs of fuse wings share a first common fuse wing and the third and fourth pairs of wings share a second common fuse wing.

One or more techniques and/or systems are provided for detecting reverse polarity of a photovoltaic system. A fuse holder may comprise a fuse holder body configured to receive a fuse used to protect against excessive current from a photovoltaic string of the photovoltaic system, such as current from a short circuit due to the photovoltaic string being installed backwards and having a reverse polarity. Because installation of the fuse while the photovoltaic string has reverse polarity may result in substantial damage and harm, a reverse polarity detection component may be configured to identify the reverse polarity and provide a warning of the reverse polarity before the fuse is installed (e.g., an audible alert, a blinking light, a locking of the fuse holder to prohibit installation of the fuse, etc.).

One or more techniques and/or systems are provided for detecting reverse polarity of a photovoltaic system. A fuse holder may comprise a fuse holder body configured to receive a fuse used to protect against excessive current from a photovoltaic string of the photovoltaic system, such as current from a short circuit due to the photovoltaic string being installed backwards and having a reverse polarity. Because installation of the fuse while the photovoltaic string has reverse polarity may result in substantial damage and harm, a reverse polarity detection component may be configured to identify the reverse polarity and provide a warning of the reverse polarity before the fuse is installed (e.g., an audible alert, a blinking light, a locking of the fuse holder to prohibit installation of the fuse, etc.).

The present disclosure provides an excitation fuse with a conductor and a fusant being sequentially broken, the excitation fuse comprising a housing and a cavity in the housing, wherein at least one conductor is provided to be inserted in the housing and the cavity and has two ends connected with an external circuit; at least one fusant is provided in parallel on the conductor; an excitation device and a breaking device are mounted in the cavity at one side of the conductor; the excitation device may receive an external excitation signal to act to drive the breaking device to sequentially form at least one fracture on the conductor and the fusant respectively; and at least one fracture on the conductor is connected in parallel with the fusant.

The present disclosure provides an excitation fuse with a conductor and a fusant being sequentially broken, the excitation fuse comprising a housing and a cavity in the housing, wherein at least one conductor is provided to be inserted in the housing and the cavity and has two ends connected with an external circuit; at least one fusant is provided in parallel on the conductor; an excitation device and a breaking device are mounted in the cavity at one side of the conductor; the excitation device may receive an external excitation signal to act to drive the breaking device to sequentially form at least one fracture on the conductor and the fusant respectively; and at least one fracture on the conductor is connected in parallel with the fusant.

Some embodiments include a fuse element assembly having a first portion configured to rupture as materials of the first portion flow to a second portion through electromigration. The assembly has a second portion configured to accumulate the materials that have flowed from the first portion. The assembly also has a control element configured to divide the flow of materials into at least two paths along the second portion. The first portion may be a fuse-link and the second portion may be a cathode coupled to the fuse-link through a narrow neck region. The control element may be, for example, a slit, a hole, a conductive contact, etc.