This disclosure relates generally to an energy metering assembly configured to measure current and voltage of a one or more primary conductors, the energy metering assembly comprising a core; a coil having a plurality of turns, the coil being positioned around the core when securing the core to the one or more primary conductors; a voltage sensor, the voltage sensor being configured to sense a voltage of a one or more primary conductors; and a controller coupled to the coil and the voltage sensor, the controller being configured to determine a voltage of the one or more primary conductors, determine a current of the one or more primary conductors, and responsive to determining the voltage and the current, determine the power carried by the one or more primary conductors.

An analog signal conditioning device and method employing a multi-path feedback mechanism to actively minimize the error of the overall desired signal conditioning transfer function to produce a corrected output signal, initially and over temperature, by exploiting characteristics of resistances manufactured simultaneously on a common thermally conductive substrate.

The present general inventive concept is directed to provide a saturation prevention method that utilizes transfer function modulation to continuously and precisely condition signals over more than four orders of magnitude from a signal source. To avoid signal conditioning error and large transient behavior due to range switching, continuous conditioning of all ranges without saturation over the entire large input dynamic range is employed. The use of transimpedance amplifiers in an example embodiment induces negligible loading on the signal source such that the integrity of the original signal is fully maintained, enabling precise signal conditioning. The ratio of gain to input impedance with a transimpedance amplifier is orders of magnitude larger than other typical methods of signal conditioning, making these amplifiers optimum for the saturation prevention method. An example embodiment utilizes the saturation prevention method to maintain the expected signal gain and a low impedance load for the signal source to ensure the desired accuracy of the signal conditioning.

A high-bandwidth current-sensing extraction-coil sensor is provided. The sensor includes: a single-turn current extraction coil used to generate a voltage based on an input current by using Faraday's law, and the single-turn current extraction coil includes single-turn copper coils; a coil terminal matching resistor R.sub.d, connected to the single-turn current extraction coil and used to perform impedance matching on the voltage to produce a matched voltage signal; and a signal processing circuit, individually connected to the single-turn current extraction coil and the coil terminal matching resistor R.sub.d and used to restore the matched voltage signal and output a restored current to achieve current detection. The single-turn copper coils are employed to reduce parasitic capacitance and parasitic inductance, thereby increasing current detection bandwidth and avoiding introduction of parasitic inductance interference when measuring fast GaN devices. The sensor is adopted to achieve a lower manufacturing cost.

A high-bandwidth current-sensing extraction-coil sensor is provided. The sensor includes: a single-turn current extraction coil used to generate a voltage based on an input current by using Faraday's law, and the single-turn current extraction coil includes single-turn copper coils; a coil terminal matching resistor R.sub.d, connected to the single-turn current extraction coil and used to perform impedance matching on the voltage to produce a matched voltage signal; and a signal processing circuit, individually connected to the single-turn current extraction coil and the coil terminal matching resistor R.sub.d and used to restore the matched voltage signal and output a restored current to achieve current detection. The single-turn copper coils are employed to reduce parasitic capacitance and parasitic inductance, thereby increasing current detection bandwidth and avoiding introduction of parasitic inductance interference when measuring fast GaN devices. The sensor is adopted to achieve a lower manufacturing cost.