A bidirectional battery disconnect switch, i.e., a switch which is capable of blocking a voltage in either direction when open and conducting a current in either direction when closed, is disclosed. The switch includes a four-terminal MOSFET having no source/body short and circuitry for assuring...http://www.google.fr/patents/US5689209?utm_source=gb-gplus-shareBrevet US5689209 - Low-side bidirectional battery disconnect switch
