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This behavior has also been noted during charging. Due to the device's metal battery cover, the handset tends to retain any heat generated. It has also been reported that the phone can reboot after reaching high temperatures. Upon rebooting, the phone can hang at the LG start-up logo, necessitating the user to reset the device manually.
An optical sensor is generally part of a larger system that integrates a source of light, a measuring device, and the optical sensor. This is often connected to an electrical trigger. The trigger reacts to a change in the signal within the light sensor. An optical sensor can measure the changes from one or several light beams.
The ambient light sensor of a Google Pixel 4a smartphone under a microscope. An ambient light sensor is a component in smartphones, notebooks, other mobile devices, automotive displays and LCD TVs. It is a photodetector that is used to sense the amount of ambient light present, and appropriately dim the device's screen to match it.
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When the FSD activates it should stop (or reduce to safe levels) gas flow to the burner until it is reset manually. Older devices, such as bimetallic strips, were used in conjunction with pilot lights. The pilot light is no longer used in new devices, but may still be encountered on old appliances still in service. [1]
The Lumia 920 has Nokia's PureView technology on the rear camera, [23] featuring an optically stabilised 8.7-megapixel BSI image sensor (1/3.2" sized, much smaller than the previous Nokia 808 Pureview) with a f/2.0 Carl Zeiss Tessar lens, short-pulse high-power dual-LED flash and 1080p HD video capture. Pixel size is 1.4 μm.
A transient fault is a fault that is no longer present if power is disconnected for a short time and then restored; or an insulation fault which only temporarily affects a device's dielectric properties which are restored after a short time.