Abstract: A non-isolated capacitive AC-DC conversion power supply includes a current limiting input module that receives AC input power and has an output capacitor that supplies DC power. Charge storage stages have charge storage capacitors, a rectifier supplying rectified current from the input module to charge the charge storage capacitors and the output capacitor during a first part-cycle of the AC input power. The charge storage stages also include current amplifiers and unidirectional elements that conduct discharge current from the charge storage capacitors to charge the output capacitor during a second part-cycle of the AC input power. Ground of the DC output can be connected to the live AC input.

Abstract: A method is shown for deterministically selecting an endpoint for multiple links through a network for a client device. When a first network device establishes a connection for a client device to an endpoint device, it causes a database entry to be created that is keyed by a client identifier value for the client device and includes an endpoint address field with the network address of the endpoint device. When a second network device receives a call request from the client device, it queries the database using the client identifier value for the client device and waits a predetermined period for a database reply. A database device storing the database entry receives the query from the second network device, searches for the database entry matching the client identifier value, and sends a database reply that includes the client identifier value and the network address of the endpoint device from the database entry.