A multi-function vehicle lamp having a plurality of light emitting diodes includes a turn input and a tail input with a switch configured to stop current flowing through the tail input when the turn input is energized to increase current flow through the turn input to satisfy minimum current draw requirements of a vehicle current meter that detects turn indicator failure. The lamp may include a single combined turn/stop input, or may include separate turn and stop inputs. Lamps having separate turn and stop inputs block current flow through the stop input when the turn input is energized.

A working vehicle includes a prime mover provided on a vehicle body, a first indicator light provided on the vehicle body, a second indicator light provided on a working device connected to the vehicle body, and an integrated controller including a first controller portion to control the prime mover, and a second controller portion to control the first indicator light and the second indicator light.

The invention relates to the technical field of device detection, and in particular provides a status detection method and device for a vehicle light signaling control device, and a vehicle, so as solve a technical problem of how to accurately and reliably detect an operating status of a vehicle light signaling control device. For this purpose, according to the method of an embodiment of the invention, a first resistance jump sequence of a currently detected position resistance may be obtained according to historical position resistance data and the currently detected position resistance; and then it is determined whether the vehicle light signaling control device has malfunctioned, according to a comparison result of the first resistance jump sequence and a preset second resistance jump sequence. By means of the foregoing steps, when a jump sequence of the position resistance is consistent with a normal resistance jump sequence, it may be determined that an actual position of a turn position shifting module is a position corresponding to this position resistance, which overcomes a defect of false position determination in the prior art caused by the inconsistency between a position corresponding to a resistance value detection result and an actual position of a light control lever.

A lighting circuit for blinking a light-emitting unit having plural light sources is equipped with an abnormality detection unit which generates abnormality information when detecting an abnormality in even one of the plural light sources, and a holding circuit which holds the abnormality information during a period when the lighting circuit is supplied with a blinking signal. The lighting circuit supplies a drive current(s) to the plural light sources according to the blinking signal and stops supplying a drive current(s) to all of the plural light sources according to the abnormality information being held by the holding circuit.

An electrical power monitoring system includes a base at an external surface of a wall of a junction box and including a stem configured to project through an opening in the wall, the base further including a monitoring circuit, a plurality of conductors extending through the stem and coupling the monitoring circuit to a plurality of conductive terminals in the junction box, and a fastener configured to mate with the stem of the base at an internal surface of the wall to fix the base to the wall, wherein the monitoring circuit is configured to monitor presence of electrical power at the plurality of conductive terminals, the monitoring circuit including a plurality of light sources at the external surface of the base.

Provided is a charge pump including a flying capacitor, an output capacitor, a switch group arranged to switch connection states of the capacitors so as to generate an output voltage from an input voltage, and a feedback control unit arranged to adjust an interterminal voltage of the flying capacitor to a predetermined target value when charging the same. On the basis of a first node voltage applied to a first terminal of the flying capacitor, the feedback control unit adjusts a second node voltage at a second terminal of the flying capacitor. The feedback control unit includes a voltage detection unit arranged to detect the interterminal voltage of the flying capacitor, and a voltage adjustment unit arranged to adjust the second node voltage according to a result of detection by the voltage detection unit.

The present disclosure provides a lamp for a vehicle and a method of controlling the same. The vehicle lamp intuitively informs a traveling direction of the vehicle and minimizes deterioration of visibility when a failure occurs and a method of controlling the same. A lamp for a vehicle includes a light source unit having a plurality of light source groups and an operation state detection unit configured to detect an operation state of at least one light source included in each of the plurality of light source groups. A lighting mode determination unit is configured to determine a lighting mode of the light source unit based on the detected operation state. A control unit is configured to operate the light source unit in any one of a first lighting mode and a second lighting mode based on the determined lighting mode.

A method for operating an optoelectronic assembly which includes at least one component string having at least one section, wherein the section includes at least one light emitting diode element, is provided. According to the method, the component string is supplied with electrical energy, the supply of the component string with electrical energy is interrupted, a total voltage is detected, which is present between an input and an output of the section of the component string, the total voltage is compared with a sum of threshold voltages of all the light emitting diode elements. It is identified that the section has no short circuit if the total voltage is equal or at least approximately equal to the sum of the threshold voltages, and/or it is identified that the section has a short circuit if the total voltage is less than the sum of the threshold voltages.

An LED lighting device system for a vehicle prevents erroneous lighting of the LED lighting device due to leakage current at fee operation switch. An LED lighting device system for a vehicle is provided with an LED lighting device having an LED light source, an operation switch for lighting and extinguishing the LED light source, and a power source that is connected to the input side of the operation switch and feeds electrical current to the LED light source. The LED light device system for a vehicle has a switching element capable of blocking electrical current flowing to the LED light source and a detection unit that detects voltage on the output side of the operation switch and causes the switching element to block the electrical current.

A method for operating an optoelectronic assembly which includes at least one component string having at least one section, wherein the section includes at least one light emitting diode element, is provided. According to the method, the component string is supplied with electrical energy, the supply of the component string with electrical energy is interrupted, a total voltage is detected, which is present between an input and an output of the section of the component string, the total voltage is compared with a sum of threshold voltages of all the light emitting diode elements. It is identified that the section has no short circuit if the total voltage is equal or at least approximately equal to the sum of the threshold voltages, and/or it is identified that the section has a short circuit if the total voltage is less than the sum of the threshold voltages.