How to Build a 2000W AC Light Dimmer Circuit

Learn how to build a high-power 220V AC Light Dimmer Circuit using the BT138-600E TRIAC and DB3TG DIAC. In this video, we build the complete AC voltage regulator circuit and demonstrate how to optimize it for better performance. We'll fix the narrow potentiometer control range by adjusting the timing capacitor (C1) from 150 nF to 100 nF, test it with incandescent and LED bulbs, and explain why LEDs flicker at low brightness levels. ⚡ Technical Specifications Operating Voltage: 220V AC TRIAC: BT138-600E (Up to 12A with Heat Sink) Max Load Capacity: Up to 2000W / 2600W Max Peak Trigger DIAC: DB3 Applications: Fan Speed Controller, Heater Control, Incandescent Light Dimmer ⚠️ SAFETY WARNING: This circuit connects directly to mains AC voltage (220V). High voltage can be fatal. Ensure proper isolation and do not touch any uninsulated parts while powered. If you found this tutorial helpful, please Like, Share, and Subscribe to VoltaraLab for more practical electronics projects! Drop your questions in the comments below. #ACDimmer #Electronics #DIYElectronics #VoltaraLab #BT138 #TRIAC #LightDimmer #CircuitDesign #HowTo #CircuitTutorial