Controlling transistor involves setting latch to a defined state, lowering potential on second node, lowering potential on first node if potential difference between nodes exceeds defined level

摘要

The method involves applying a first defined positive potential to a latch stage's (11) first supply node (13) connected to a transistor (10) control connection, applying a reference potential to a second latch node (14) connected to the transistor's source, setting the latch to a defined state with the transistor on or off, lowering the second node potential, lowering that on the first node if the potential difference between nodes exceeds a defined level.