Low-component-count zero-crossing detector is low power - EDN
Zero-Crossing Detector Circuit
The Industry's First Integrated Zero Cross Detection ICs | ROHM Semiconductor - ROHM Co., Ltd.
Zero Crossing Detectors
Zero Crossing Detectors
Module of a zero crossing detector [5] | Download Scientific Diagram
110/220VAC Opto-Isolated Zero Cross Detector Module for DIN Rail Carrier Mount with 3.3V or 5V Output - Ideal for Arduino, ESP32/ESP8266 - Share Project - PCBWay