Adaptive zero-voltage switching electronic ballast - power supply circuit - Circuit Diagram

Voltage probe with pin diameter 5.0mm and capable of handling currents up to 420A for 4450V applications.

High-quality AVX TPSE226M035R0125 low-impedance tantalum capacitor, suitable for demanding applications.

Precision electronic scale oscillator measuring 3.2x2.5mm, operating at 3225 frequency with 16MHz accuracy and stability within 10-30PPM.

Full-range MOS power IC designed for versatile performance across multiple applications.

Reliable photocoupler for signal isolation and safety in various electronic circuits.

Schematic diagram for an adaptive zero-voltage-switching electronic ballast.

The IR2520 is primarily intended for driving fluorescent lamps rated below 40W. Depending on the lamp's wattage, the component parameters such as Q1, Q2, L2, and C7 vary slightly. For instance, when the lamp's rated power falls between 16-28W, Q1 and Q2 should be 500V, 2A MOSFETs (like the IRFC420). The inductance value for L2 should be around 1.8mH to 3.5mH, while C7 typically ranges from 3.3nF to 5.6nF. As the lamp's power increases, the inductance value of L2 decreases accordingly. This adjustment is made through debugging to ensure the lamp current aligns closely with or meets the lamp's rated current.

These components play a critical role in optimizing the efficiency and performance of electronic ballasts, ensuring they can handle varying loads and maintain consistent output.

Additionally, proper selection and calibration of these parts are essential for reducing energy consumption and extending the lifespan of the system. By carefully adjusting the inductance and capacitance values, engineers can fine-tune the ballast's behavior to suit specific lighting requirements, making it more efficient and reliable in real-world applications.

Rubber Stopper

Wenzhou Hesheng Electronic Co., Ltd. , https://www.heshengelec.com