Hello again,
If you wan to use solar cells for home use and want to have an assurance under adverse situation like cloudy or rainy days, you must use rechargeable batteries for back up. If you want to use AC ( 220V, 60 Hz ) operating equipment like most of the home appliances, you must use inverter to change the DC to AC. Most of the inexpensive non sine wave ( quasi sine wave) inverters will work well for TV or tools or stereo or computer but refrigerator may have a problem due to high in rush current during start up.
Mr. Choi Pan Jong, please translate and explain in detail.
Best regards,
Younggull Kim in San Francisco