A drive arrangement for activating a car safety device activation element (201), such as an air bag, comprises a drive circuit (203)which is coupled to the car safety device activation element (201). The drive circuit generates an activation signal which a...

Power supply for supplying a direct voltage load (2) and comprising a rechargeable battery (4), and a voltage generator (6) for recharging the battery (4) and supplying power to the load (2), including first control means (20,16) to control supply of curre...