Abstract: A power supply apparatus, including: a transformer including a first primary winding for connection to a first power source and a second primary winding for connection to a second power source, and a secondary winding for delivering power therefrom as the output of the power supply apparatus; a controller for receiving voltage inputs from the first power source and the second power source, and in response to the received voltage inputs control supply from the first power source to the first primary winding and from the second power source to the second primary winding, such that: if the first power source and second power source are available the controller operates to allow power to be supplied to the first primary winding from the first power source and operates to shut off supply of power to the second primary winding from the second power source.

Abstract: A power supply apparatus, including: a transformer including a first primary winding for connection to a first power source and a second primary winding for connection to a second power source, and a secondary winding for delivering power therefrom as the output of the power supply apparatus; a controller for receiving voltage inputs from the first power source and the second power source, and in response to the received voltage inputs control supply from the first power source to the first primary winding and from the second power source to the second primary winding, such that: if the first power source and second power source are available the controller operates to allow power to be supplied to the first primary winding from the first power source and operates to shut off supply of power to the second primary winding from the second power source.

Abstract: Compositions and methods are provided herein for improved dual immunization strategies that induce in a subject a robust immune response. The methods described are therefore useful for treating and/or preventing (i.e., reducing the likelihood or risk of occurrence) different diseases, disorders, and conditions such as cancers and infectious diseases for which induction of a humoral immune response and/or cellular immune response is desired and beneficial.

Abstract: A half bridge method and apparatus that provides a desired output using pulse width modulation and the predicted condition of a power supply is disclosed. The power supply is operatively connected to a first one the switch drivers of the switching elements of the half bridge. The condition of the power supply is predicted using of a model of power supply operating parameters. This model is used in conjunction with a signal applied to a second one of the switch drivers of the switching elements of the half bridge to determine whether an operating criterion for the power supply is satisfied. If the condition is satisfied then a signal to the first one of the switch drivers is enabled.

Abstract: An inverter has a current sensor that senses a low side current before a high side of the inverter is permitted to power up. If an over-current situation is detected on the low side, powering up is prevented in order to avoid damage to the rectifier.

Abstract: A half bridge method and apparatus that provides a desired output using pulse width modulation and the predicted condition of a power supply is disclosed. The power supply is operatively connected to a first one the switch drivers of the switching elements of the half bridge. The condition of the power supply is predicted using of a model of power supply operating parameters. This model is used in conjunction with a signal applied to a second one of the switch drivers of the switching elements of the half bridge to determine whether an operating criterion for the power supply is satisfied. If the condition is satisfied then a signal to the first one of the switch drivers is enabled.

Abstract: An inverter has a current sensor that senses a low side current before a high side of the inverter is permitted to power up. If an over-current situation is detected on the low side, powering up is prevented in order to avoid damage to the rectifier.

Abstract: The present invention relates to drives, and more especially, the present invention relates to a system integrity check for AC drives. Traditionally AC/DC drives systems have been maintained by competent staff with a good level of knowledge. Increasingly due to productivity savings, industry is using staff with lower skill levels to maintain equipment, which means the equipment has to be simpler to install and replace when a failure occurs. In addition the equipment normally needs to be replaced quickly to minimise factory downtime.