Current Sensor
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Smart Auto - Assist Home Safety System By KISHOR G I built a Smart Auto-Assist Home Safety System that simulates a real smart home using an ESP32 and an ESP32-S3-BOX3. The system automatically controls lighting and appliances based on ambient light and human motion, continuously monitors electrical energy usage, detects abnormal current faults, and predicts electricity consumption and billing using lightweight on-device… |
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HestiaGuard - Intelligent Home Assistant By Ashwanth A, Muthiah Karthik S HestiaGuard Smart Power & Safety SystemHestiaGuard is a distributed home management and power‑control system built around ESP32 microcontrollers. The project combines environmental monitoring, electrical usage tracking, and centralized control to improve household safety and energy efficiency. … |
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An IOT Based Smart AC Electricity Meter with Tamper Protection I decided to create a Smart AC watt-hour meter after experiencing a spike in my electricity bill that left me both shocked and curious. Each month, I tried to be mindful of my energy use, but I realized I had no clear way to track which appliances were consuming the most power or when. I also noticed that many homes and businesses around me faced similar challenges,… |
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Building a Simple Current Detector Circuit with 555 Timer and few Passive Components Working with electricity can be a daunting and life-threatening task if you are a beginner in the electronic/electrical field, and things can go very wrong when electricity is not properly handled, which is why safety must come first in order to avoid injury, before starting work on an electric box and AC mains one need to verify that there is no AC leakage voltage.… |
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DIY Power Consumption Monitoring Device using ESP32 Electrical appliances are all around us, starting from the indispensable charger of your smartphone to heavier appliances like room heaters, air conditioners, washing machines, and whatnot. Given the status quo of a looming global energy crisis, it is vital to have an understanding of the power consumed by these devices. While our monthly electricity bill gives us a… |
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Coreless Current Sensors with High Accuracy and TMR Elements Suitable for EV Charging Infrastructure Murata has announced the new MRD series of open-loop current sensors that integrates high-performance tunnel magneto-resistive (TMR) elements - enabling precision measurement with regard to both DC and AC currents up to 40A, along with maintaining stable characteristics across an extensive temperature range. With high accuracy current sensing… |
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Low Noise 400 kHz Current Sensor ICs with Dual Overcurrent Detection for Automotive Power-Conversion Applications The MLX91218 and MLX91219 from Melexis are the next-generation high-precision IMC-Hall 400 kHz current sensor ICs that simplify module designs with a dual OverCurrent Detection (OCD) functionality, a flexible supply 3.3V/5V, and an improved SNR in automotive power-conversion applications. Available in a single inline (SIP) 4-pin… |
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Next Generation Isolated Integrated Current Sensors to Increase Performance and Lower Design Complexity in Automotive and Industrial Applications Melexis has announced the release of two new isolated integrated current sensors, MLX91220 (5 V) and MLX91221 (3.3 V), to increase performance and lower design complexities in various automotive and industrial applications. With 300 kHz bandwidth, these Hall-effect based current sensors can be used in different power conversion applications lower than 50 A RMS. … |
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High Accuracy, 40 KHz Hall-effect Current Sensor IC for Starter Generators and Traction Inverter Control The new MLX91211 Hall-effect current-sensing IC from Melexis comes in two variants to provide a choice of feature and performance in cost-sensitive applications. The non-intrusive sensors combine with the ferromagnetic core to generate an analog output proportional to the current flowing in the cable or bus bar. The output signal has a 40kHz bandwidth, and the sensor… |
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AC Current Measurement using Current Transformer and Arduino A current transformer is a type of instrumental transformer specially designed to transform alternating current in its secondary winding, and the amount of current produced is directly proportional to the current in the primary winding. This type of current transformer is designed to non-invisibly measure current from the high voltage subsystem or where a high amount of… |
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IoT Based Raspberry Pi Smart Energy Monitor Energy Monitors, whether covering the entire apartment or deployed to monitor just one appliance, provide a way for you to keep track of your consumption and make necessary adjustments. While they are increasingly becoming available on the market, the maker in me still feels it will be a great idea to build a DIY version that could be tailored to meet specific personal… |
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Ultra-Compact Coreless Current Sensor, ACS37612 Measures Currents from 200A to >1000A providing Complete Accuracy for EV Inverter Designs Allegro MicroSystems has launched a coreless current sensor named ACS37612. This device is capable of measuring currents from 200A to >1000A flowing through a PCB or a busbar with a typical accuracy of 1% that too without a magnetic concentrator core or a shield. The differential Hall-based sensing topology used to measure the magnetic field provides great immunity to… |
