Thanks for watching guys
This is a simplest solid state relay using bt136 triac. It also provides galvanic isolation between high and low voltage part.u can connect it directly to Arduino pin.. no more transistor or optocupler,it will work with minimum 2v if u use red LED,and maximum input voltage depends on the current limiting resistor of the led.
if u see unwanted triggering of the triac then add a snabber network circuit between MT1 and Gate.
snabber network is a capacitor(nearly 10nf ) and a resistor(nearly 50ohm) in series,u can varry the values
Components:
1. bt136 triac
2.10k resistor
3. LDR
4.LED (any colour)
5.220 ohm resistor
Circuit:[ Ссылка ]
part-2 video (optocupler version)
[ Ссылка ]
Must check my other videos #fclab #freecircuitlab
#bt136
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