A power supply circuit (100) configured to control operation of a load (135) including a converter (105, 110) configured to convert a DC signal to an AC signal, a drive circuit connected to the converter (105, 110) to control operation of the converter (105, 110), and a shutdown circuit (160) connected...http://www.google.fr/patents/US6421260?utm_source=gb-gplus-shareBrevet US6421260 - Shutdown circuit for a half-bridge converter
