Free Simple Circuit Diagram
In many electronics-level adjustments such as LED drivers for LCD panel backlight controls, we can use AD5228. A manually adjustable LED driver is shown on figure below. The voltage across the white LED D1 is set by the AD5228 for the brightness control. A typical white LED with Vf of 3.5 V requires a resistor, R1, to limit U2 current […]
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The size of the photoflash charger circuit is greatly simplified and reduced by Texas Instrument (TI) TPS65552A. A photoflash capacitor charger based on this device is shown on the circuit diagram below. All the necessary function such as charging controls, output feedback, charge completion status, insulated gate bipolar transistor (IGBT) driver, and circuit protections needed to implement a small, efficient […]
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Manufacturers are starting to turn to new high power to provide a photoflash function for these low-light conditions called white-light LEDs. These LEDs output is a wide light spectrum and it’s compact and easy to control. Unlike Xenon gas-discharges tubes which require hundreds of volts to flash, white-light LEDs can be operated in very low voltages. Additionally, to provide lighting […]
Read moreWe can use UBA2021 for 600 V lamp controller and half-bridge driver IC for high-power. The UBA2021 is a long-life CFL/TL applications. It’s equipped with over-power protection to delivers constant light output and improves safety. A driver circuit for an external half-bridge, an oscillator, and a control circuit for starting, preheating, ignition, lamp burning, and protection are included. A demo […]
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