Power filtering device
AssigneeSwarm Holdings LLC
InventorsJonathan Neil Hart, Paul Mark Michalczuk, Jesse Alden Smith
Life of this patent
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Abstract
An audio filtering and power extraction apparatus for filtering out audio signal and extracting power from a combined signal and direct-current power line, with an input configured to couple to a combined signal and direct-current power line, a filtering extractor system functionally coupled to the input, a DC sensing switch circuit, and a second order low-pass filter functionally coupled to the DC sensing switch circuit, the second order low-pass filter including, an inductor, a capacitor and resistor in series with each other, and an output functionally coupled to an output of the filtering extractor system and through which output extracted power is provided.
Claims14
An audio filtering and power extraction apparatus for filtering out audio signal and extracting power from a combined signal and direct-current power line including both DC power and an electrical audio signal, comprising:
- a. an input configured to functionally couple to a combined signal and direct-current power line;
- b. a filtering extractor system functionally coupled to the input, including:
- i. a DC sensing switch circuit;
- and
- ii. a second order low-pass filter functionally coupled to the DC sensing switch circuit, the second order low-pass filter including:
- 1. An inductor or virtual inductor in combination with
- 2. a capacitor and resistor in series with each other;
- and
- c. an output functionally coupled to an output of the filtering extractor system and through which output extracted power is provided.
An audio filtering and power extraction apparatus for filtering out audio signal and extracting power from a combined signal and direct-current power line including both DC power and an electrical audio signal, comprising:
- a. an input configured to functionally couple to a combined signal and direct-current power line, wherein the input includes only two functional electrical conductors;
- b. a filtering extractor system functionally coupled to the input, including:
- i. a DC sensing switch circuit including an internal low-pass filter;
- and
- ii. a second order low-pass filter functionally coupled to the DC sensing switch circuit, the second order low-pass filter including:
- 1. An inductor or virtual inductor in combination with
- 2. A capacitor and resistor in series with each other;
- and
- c. an output functionally coupled to an output of the filtering extractor system and through which output extracted power is provided.
Dependencies are inferred from the claim text.