An electrical control system containing a power supply network including a primary high voltage power source and a secondary low voltage power source, the primary power source being held inactive except for periodic intervals of time, and also being removable for replacement or recharging; the secondary power source being charged during operation of the primary power source and being operative while the primary power source is inoperative.
申请公布号
US4272650(A)
申请公布日期
1981.06.09
申请号
US19780951737
申请日期
1978.10.16
申请人
INTERNATIONAL MOBILE MACHINES INCORPORATED
发明人
BOLGIANO, DUANE R.;BENJAMIN, JR., JOEL M.;MEYER, JR., VICTOR