Submitted below ac load management by delayed phase angle triggering to opto-coupler(U3) interfaced triac (U4) for single phase load control using Arduino nano. Proteus file and the code for simulation are available at the bottom. For video watch at down below or use this link https://youtu.be/VpHoE_2MlEo Circuit Explanation It uses an Arduino nano which receives zero cross pulses (ZVS) at pin at Pin 2 and delayed output pulses are developed at pin 3. Control is done at A0 through a variable resistor (POT-RV1). A small step down transformer delivers 12 volt ac which is filtered by a bridge rectifier BR1 and then a blocking diode D1 and then filtered by capacitor C1 that feeds a 3 terminal regulator that gives 5 volt duly filtered again by C2 for powering the entire circuit. Function of D1 is very interesting. It separates…
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Alexa voice controlled lamp (June 2018)
IOT switch for home automation DIY Using ESP8266 and Wifi /IOT /Amazon Alexa voice control of loads. A circuit with triac BT139, opto isolator MOC3021, other accessories and program code for switching ON/OFF ac loads from 110v 60HZ to 220v 50HZ.
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