Ultra-Low Noise Mains DC Power Supply
AssigneeQuest Electronics Limited
InventorTom Alexander Paston Bacon
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Abstract
A mains DC power supply comprising a buffer amplifier, in which a battery is used to provide a reference voltage for the buffer amplifier. The battery voltage reference is disconnected from the buffer amplifier, to prevent excessive dissipation of the battery, when the mains AC supply is in the switched-off state. The use of a battery voltage reference produces a DC power supply, from the mains AC supply, with an ultra-low level of subsonic and audio frequency noise.
Claims3
A DC power supply comprising a buffer amplifier wherein a battery, consisting of a single cell or multiple cells, is used to provide a reference voltage for the buffer amplifier.
Dependencies are inferred from the claim text.