Patent ID: 8451639
Filing Date: 2013-05-28
Classification: G01R,H02M

Abstract:
1. An input adaptable electrical device comprising: an input for receiving an input voltage from an unidentified power source; a main transformer having a primary winding and a secondary winding, the primary winding of the main transformer connected to receive the input voltage from the input, the primary winding of the main transformer having first, second and third transformer taps that allow the main transformer to be configured in a first configuration or a second configuration; a circuit breaker connected between the input and the primary winding of the main transformer, when ‘open’ the circuit breaker prevents the input voltage from being provided to the primary winding of the main transformer and when ‘closed’ the circuit breaker allows the input voltage to be provided to the primary winding of the main transformer; and an automatic input voltage detection circuit connected to monitor the input voltage provided by the unidentified power source, wherein the automatic input voltage detection circuit identifies the power source based on the monitored input voltage, and selects the first configuration or the second configuration of the main transformer based on the identification of the power source, the automatic input voltage detection circuit including: