Free Simple Circuit Diagram
A 40 watt fluorescent tube lamp or two 20-watt tubes in series will be driven by this circuit but this circuit will produce less brightness than usual, since this circuit only deliver 6-12 Watts. This circuit draws 0.9-1.2 Amps for 2 x 20 watt tubes, or 0.45-0.9A for 1 x 20 watt tube, depending on the potentiometer setting. Here is […]
Read moreA 40 watt fluorescent (tube lamp, TL) or two 20-watt tubes in series will be driven by this circuit. The transformer is wound on a ferrite rod 10mm dia and 8cm long. The diameters of the wire are not critical but our prototype used 0.61mm wire for the primary and 0.28mm wire for the secondary and feedback winding. When circuit […]
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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 […]
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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