00459pamaa2200145 4500 0000031437 20070213090000.0 0070067198 TK7881.15 BIL 1999 BILLINGS Switchmode power supply handbook Keith H. Billings. 2nd ed. Boston: McGraw-Hill, 1999. various pages: ill.; 24cm. Electronic apparatus and appliances -- Power supply -- Handbooks, manuals, etc.