Operation of Electronic Devices for Controlling Led Light Sources When the Environment Temperature Changes

Ambient temperature significantly affects the electrical and light parameters of LEDs, such as forward reverse current, voltage drop LEDs luminous flux. With an increase in temperature, decrease intensity LED radiation is explained by physical processes, including phenomena non-radiative recombination due to impurity levels, on surface, losses carriers barrier layers heterostructures, etc. The also reduces useful life device general. Drivers, which allows stabilize operating current with a change supply and, result But various types, stabilization does not lead flux when regime their operation changes. When changing ambient range +40…+60 °C, significant decreases even case kept constant, we can see from documentation for most types. An article analyzes effect different types drivers part lighting devices, lamps spotlights, order offer possible constructive solutions partial reduction or elimination decline problem devices under conditions at high temperatures.