... ballast, energy savinglamp,fluorescent lamp etc. 1. AC-DC-AC frequency conversion technology2. Digital wave synthesis, wave feed-back technology, low power ... by keyboard, big/small adjustment, fast parameter set-up10. Output frequency range:45-65Hz11. Output voltage range:AC 0-300V12. CHP ... stability:≤0.1%/30min16. Load adjust rate:≤0.1%.17. Frequency stability:≤0.05%/30min.