What are the factors that influence "220V Cooling Fan" launch voltage? Launch voltage means a minimum job working voltage electric fan, a fan of good and bad characteristics comparable low friction coefficient generally net fan, and a bathroom with a lower operating voltage of the Hall Seoul IC to enable fans to lower electric start. Influence "220V Cooling Fan" launch factor voltage: 1. Winding describe whether appropriate. 2. The size of silicon hysteresis loss. 3. The minimum operating voltage of the Hall lC. 4. transistor expand multiple irregularities. 5. magnetization intensity rubber magnet. 6. component blades "220V Cooling Fan". 7. bearing friction coefficient of irregularities. 8. transistor full voltage irregularities. 9. whether there is a reverse diode maintenance. Fans know the dead: