AC диммер не выключается: остаточное свечение при 0% Feb 27, 2026 0 2 TL;DR: Установка диммера на 0% не гарантирует выключения лампы. Ток удержания TRIAC поддерживает проводимость ключа при малых нагрузках. Решение: вызывайте dimmer.setState(OFF) или setMode(OFF_MODE) в... TRIAC ac-dimmer halogen incandescent troubleshooting tutorial Read more
AC Dimmer Doesn't Turn Off: Residual Glow at 0% Feb 27, 2026 0 8 TL;DR: Setting the dimmer to 0% does not guarantee the lamp turns off. TRIAC holding current keeps the switch conducting at low loads. Fix: call dimmer.setState(OFF) or setMode(OFF_MODE) instead of se... TRIAC ac-dimmer halogen incandescent troubleshooting tutorial Read more
Which AC Dimmer Module to Choose: Complete Buyer's Guide Feb 26, 2026 0 18 TL;DR: Three questions determine your choice: (1) load type — resistive (heater, incandescent) or inductive (motor); (2) load power in watts → calculate amps → pick a rating with a ×1.3 safety margin;... Arduino ESP32 TRIAC ac-dimmer buyer-guide dimmerlink tutorial Read more
TRIAC Overheating: AC Dimmer Runs Hot or Burns Out Feb 26, 2026 0 20 TL;DR: A TRIAC is an active device with a voltage drop of ~1.2V. At load currents above 2A it dissipates several watts as heat. Without thermal management: overheating, thermal protection triggering, ... Arduino TRIAC ac-dimmer troubleshooting Read more
AC TRIAC Dimmer Is Not PWM: How Phase-Cut Dimming Works Feb 26, 2026 0 24 TL;DR: analogWrite() and PWM don't work with an AC TRIAC dimmer. A TRIAC is not a resistor or a DC transistor. It regulates power using phase-cut control : it opens at a precisely calculated moment ea... Arduino ESP32 TRIAC ac-dimmer troubleshooting Read more
LED Lamps with AC Dimmer: TRIAC or MOSFET — Compatibility Guide Feb 26, 2026 0 32 Short answer: There are two types of AC dimmers: TRIAC (leading edge — for incandescent bulbs, halogen, heaters) and MOSFET AC dimmer (trailing edge — purpose-built for LED lamps). If an LED lamp flic... Arduino LED MOSFET TRIAC ac-dimmer trailing-edge tutorial Read more
Trailing Edge vs Leading Edge: Which Dimmer Method to Choose Feb 26, 2026 0 37 Short answer: Leading edge is the standard TRIAC dimmer — it opens the load in the second half of each AC half-cycle (best for incandescent bulbs and heaters). Trailing edge is a MOSFET dimmer — it op... Arduino LED MOSFET TRIAC ac-dimmer leading-edge trailing-edge tutorial Read more
LED Flickering with AC Dimmer: TRIAC or MOSFET — Causes and Fixes Feb 26, 2026 0 33 Short answer: LED flickering with an AC dimmer has three distinct root causes. Types 1 and 2 are caused by TRIAC architectural incompatibility with LED lamps — the hardware fix is a MOSFET AC dimmer (... Arduino ESP32 LED MOSFET TRIAC ac-dimmer flicker tutorial Read more