A resistance assembly for a mobile device and a manufacturing method thereof are disclosed. The resistance assembly for a mobile device in accordance with an embodiment of the present invention includes: a substrate having a circuit formed thereon; first to third pads laminated and separated from one another on the substrate; first to third terminals connected to the first to third pads, respectively; and first and second resistors formed between the first and second terminals and between the second and third terminals, respectively, and serially connected to each other and configured to adjust electric current flowed into the circuit.

Systems, methods, and circuitries are provided for calibrating a heater used to heat an adjustable resistance network during a trimming procedure. In one example, a circuit is provided that includes an adjustable resistance network including first resistance segments; a heater element thermally coupled to the adjustable resistance network; a calibration resistor including second resistance segments thermally coupled to the first resistance segments; and interface circuitry coupled to the calibration resistor.

A current detection device has a first base material, a second base material, and a third base material that are coated with insulation and connected between a three-phase inverter and a motor. The first base material is disposed on the upper surface of the third base material in close contact therewith and comprises, in a section which is not coated with insulation, a first resistor and a first measurement terminal which are fixed atop the first base material. The second base material is disposed on the lower surface of the third base material in close contact therewith and comprises, in a section which is not coated with insulation, a second resistor and second measurement terminal which are fixed atop the second base material.

A current detection device has a first base material, a second base material, and a third base material that are coated with insulation and connected between a three-phase inverter and a motor. The first base material is disposed on the upper surface of the third base material in close contact therewith and comprises, in a section which is not coated with insulation, a first resistor and a first measurement terminal which are fixed atop the first base material. The second base material is disposed on the lower surface of the third base material in close contact therewith and comprises, in a section which is not coated with insulation, a second resistor and second measurement terminal which are fixed atop the second base material.

A resistive grid includes a frame and at least one resistive element. The frame has a first frame end and a second frame end opposite the first frame end. The first frame end and the second frame end are joined by frame sides. The first frame end has a first length that is shorter than a second length of the second frame end. The at least one resistive element extends between the first frame end and the second frame end. The at least one resistive element has a first portion proximate the first frame end, and a second portion proximate the second frame end. The first portion is configured to have one or both of decreased heat generation or decreased electrical resistance relative to the second portion.

To provide a resistance device which has a small temperature dependence, in which a resistance value is adjustable in a wide range of from a high resistance value to a low resistance value, and which has a small circuit area, and to provide a current detection circuit including the resistance device. The resistance device is to be connected between two terminals, and a resistance value thereof is variable, the resistance device including: a reference resistor; a series variable resistor circuitry including at least one parallel variable resistor circuit which is connected in series to each other, and which each includes a resistor and a trimming element connected in parallel to the resistor; and a parallel variable resistor circuitry including at least one series variable resistor circuit which is connected in parallel to each other, and which each includes a resistor and a trimming element connected in series to the resistor.

An electric component with a fail safe element is disclosed. In an embodiment a component includes a functional element and a fail safe element electrically interconnected therewith, wherein the fail safe element is configured to ensure a minimum resistance or a minimum conductivity of the component in the event of a failure of the functional element.

A resistor includes an elongated cylindrical body having nodes and elongated members. The elongated members interconnect the nodes to form openings between the nodes and the elongated members for the flow therethrough of a cooling fluid. The body is configured to receive electric current from a powered system and to conduct and provide electric resistance to the electric current to dissipate at least part of the electric current as heat from the body. The body may be coupled with at least one other resistor of the powered system in one or more of a parallel or series arrangement in an electric circuit.

A resistor includes an elongated cylindrical body having nodes and elongated members. The elongated members interconnect the nodes to form openings between the nodes and the elongated members for the flow therethrough of a cooling fluid. The body is configured to receive electric current from a powered system and to conduct and provide electric resistance to the electric current to dissipate at least part of the electric current as heat from the body. The body may be coupled with at least one other resistor of the powered system in one or more of a parallel or series arrangement in an electric circuit.

A pPTC heating device having areas with different power densities distributed over the surface of the device. The device is constructed using a base layer composed of a pPTC material having a layer of sectioned conductive plates disposed over and under the layer of pPTC such as to control the path of the current through the device, thereby controlling resistance of the device and the power density of the device.