Abstract: An adapter is provided for adapting a Secure Digital (SD) card for use with a Smart Card reader. The adapter comprises an improved Smart Card with a memory device physically connected thereto. A controller may also be provided for use with the Smart Card reader, the controller being configured to identify whether a conventional Smart Card or an adapter that includes an SD card socket has been presented to the Smart Card reader. The controller may be arranged to control communication between the Smart Card reader and an SD card in the SD card socket and to control access to the SD card memory accordingly.

Abstract: An apparatus is provided comprising an enclosure for enclosing a printed circuit board (PCB). The PCB has a tab extending therefrom. The enclosure comprises first and second portions, one of which includes a recess arranged to receive the tab of the PCB.

Abstract: A demountable electrical panel comprises a spring under tension that is easily assembled by being laid to rest in a recess in a mounting plate put under tension to make electrical contact with a circuit board when the device is assembled.

Abstract: A drive system for an electrical load such as an electric motor or generator comprises a PWM converter and a controller therefore. A signal indicative of a condition of the converter outpost is used in a controller to drive an optimal value of PWM switching frequency based on a load characteristic that is used to control the pulse switching frequency. The system takes account of the overall system in deriving an efficient PWM switching frequency.

Abstract: This disclosure relates to an apparatus and method 10 for protecting an electronic circuit from an airflow. The apparatus 10 comprises a base 12, wherein said base 12 comprises a cover means for covering at least part of the electronic circuit. The apparatus further comprises a guide means for guiding an airflow around the electronic circuit.