high-power, low distortion, high stability AC power sources,suit for ballast, energy savinglamp,fluorescent ... back technology, low power distortion3. Controlled and tested by 16 bits MCU, which has high automation4. High speed 12 bits A/D sampling ... make test safely and steady8. Protection for over hot and thundering voltage and current9. Input by keyboard, big/small adjustment, fast parameter set-up10 ...