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Technical Examples
- In a telecommunications system, a switching device selectively applies one of two different voltage supplies to a common node. A first of the voltage supplies is coupled to the common node by a first switch and a second of the voltage supplies is coupled to the common node by a second switch. The switching device includes the following elements. A difference detector detects a difference between the first and second voltage supplies. A control circuit selectively enables one of the first and second switches and disables the other of the first and second switches, for switching between the first and second voltage supplies in response to the difference detector. The control circuit performs the switching between the first and second voltage supplies when the detected difference falls below a predetermined threshold.
- A single power distribution board having pin coded connectors may be used for both AC and DC power distribution to appropriate AC and/or DC power supplies in an information handling system. A common conductive layer may be used for either AC neutral or DC power supply return so as to eliminate one conductive layer in the power distribution board. Alternatively, total isolation of AC and DC power source inputs allow both AC and DC power supplies to operate together in a robust, redundant fashion. The DC power supplies in combination with a battery system may be used as an inexpensive uninterruptable power supply for the information handling system. Various DC and/or AC source voltages and frequencies may be coupled to appropriate power supplies through the pin coded connectors.
- An appliance supply distribution and dispensing system and method for distributing appliance supplies to a home or business and which involves a computerized system which facilitates dispensing or using one or more supplies from an appliance. The computerized system monitors the supply level(s) and, when necessary, automatically orders and delivers additional supplies. In addition, the computerized system automatically detects dispensing, use or appliance problems and orders and arranges for repair service.
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