The **HAS-G2-R** is a specific electronic component within the category of **Hall Effect Current Sensors**. It is manufactured by LEM (a leading company in electrical measurement) and is designed for the electronic measurement of DC, AC, and pulsed currents with galvanic isolation between the primary and secondary circuits. --- ### 1. Technical Specifications The following table highlights the core electronic characteristics of the HAS-G2-R series: | Feature | Specification | | :--- | :--- | | **Sensor Type** | Open Loop Hall Effect | | **Primary Nominal Current ($I_{PN}$)** | Typically 50A to 600A (depending on sub-model) | | **Supply Voltage ($V_C$)** | ±15 V (Dual Supply) | | **Output Signal** | Analog Voltage (typically ±4V at $I_{PN}$) | | **Accuracy** | ±1% of $I_{PN}$ | | **Frequency Bandwidth** | DC to 50 kHz | | **Operating Temperature** | -10°C to +80°C | --- ### 2. Core Electronic Components & Architecture The device functions through a combination of magnetic and solid-state electronic principles: * **Magnetic Core:** A high-permeability ring that concentrates the magnetic flux generated by the primary current. * **Hall Generator:** A semiconductor slice placed in the gap of the magnetic core. When current flows through the primary, the magnetic field exerts a "Lorentz Force" on the charge carriers in the semiconductor, creating a Hall voltage. * **Signal Conditioning Circuitry:** * **Amplifier:** Since the raw Hall voltage is very small (millivolts), internal op-amps scale the signal to a usable range (Volts). * **Offset Compensation:** Internal trimming to ensure the output is exactly 0V when there is no primary current. --- ### 3. Connection Pinout The HAS-G2-R typically utilizes a 4-pin connection interface for its electronic integration: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | $+V_C$ | Positive Supply (+15V) | | **2** | $-V_C$ | Negative Supply (-15V) | | **3** | $V_{OUT}$ | Analog Output Voltage proportional to current | | **4** | $0V$ | Ground / Common Reference | --- ### 4. Key Electronic Advantages * **Galvanic Isolation:** The primary circuit (high power) and the secondary circuit (control electronics) are physically separated, protecting sensitive microcontrollers from high-voltage surges. * **Low Power Consumption:** Very little energy is drawn from the primary circuit. * **Fast Response Time:** Suitable for protecting power electronics from over-current conditions.