What is the LED driver?
light emitting diodes (LEDs) are electronic devices that change electricity into light energy. The emitted light is on specific wavelengths depending on the production material. Adjustment is necessary to produce white light. LED drivers control many factors that affect LED performance and are essential in white LEDs.
LED driver is an analogous ballast in fluorescent lighting. If necessary, the driver converts the AC current (AC) to direct current (DC). Manages the incoming voltage and current to the LED voltage and current requirements. The controller is a small integrated circuit (IC) electronically.
LEDs were originally used as signal indicators; A typical application is the TV power indicator. In order for LEDs to compete as a source of general lighting with bulbs, they must be able to create quality, consistent white light and be dimmable. Choice of ice driver for white light.
Requirements that need to be taken into account at uThe LED controller depends on the planned LED use. The LEDs are controlled by a current and experience a large decrease in lighting with a low current drop. The constant current driver removes the input current changes by regulating the voltage through the current resistor. The LED current determines the reference voltage and resistor. The LED sharing of the same driver should be connected in the series to maintain a constant current.
Constant currents require overvoltage protection. The current output is also constant, and if the resistance increases down the LED circuit, the constant current can cause the voltage to increase above the LED voltage or other discrete components. Overvoltage protection is provided by the Zener diodes that can be considered an arresy fuse in parallel with LEDs. When the surge condition exists, the Zener diode begins to perform electricity. An alternative to access the zener diode is to monitor the output voltage and youPower tension when the overvoltage point is met.
efficiency in lighting energy into light is important when using LEDs because it distinguishes the LEDs as a viable light source. The amount of input power to the brightness of the LED is the level of efficiency of LED drivers. There is an inverse relationship between the power voltage and LED brightness. The input power, managed by the LED driver, with a smaller reference voltage results in lower electrical use and less heat accumulation.
LED light dimming can be controlled by LED control by lowering the input current. This causes a shift in the output color spectrum and requires an analog control signal that adds another necessary circuit to the design. Pulses width modulation (PWM) switches the current on and off at very high frequencies. PWM is used in black light dimmer, where the current is removed from the same part of the AC energy wave during each cycle. In the DC environment of high -frequency LEDs, PWM circuits must operate at even higher frequencies.