A $200$–$500$-W transformer-type inductive light source operated at a frequency of $150$–$400$ kHz

The results are given and discussed of experimental investigations of the electrical (voltage and current of inductance coil, loss of power in a ferrite magnetic circuit) and photometric (light flux and light output) characteristics of a $200$–$500$-W transformer-type inductive fluorescent light source operated at frequency $f = 150$–$325$ kHz. The high light output $(80$–$85$ lm/W$)$ at high power of $300$–$400$ W and low frequency of $150$ kHz is attained owing to low loss of power $(4.5$–$6.5$ W$)$ in the magnetic circuit and inductance coil.