Hi All,
I'm building a little project that controls my lamps. I have 220V LED lamps installed everywhere.
In order to fit everything into a wall switch I had to use as compact components as I can.
So, I decided to use a Triac as a load switch. To isolate mains I use optocoupler.
I used a circuit from the datasheet:
Triac: BT134-600E (from aliexpress)
Optocoupler: MOC3021 (from aliexpress)
Problem:
When I start using the whole device at first everything works as expected. LED lamps are controlled fine. After some time (from minutes to hours) the triacs start to fail. One triac failed completely. Others just start leek some current in off state (so LED lamps start to flicker)
Question:
I'm I doing something wrong?
Can 220V LED lamps be the cause of triac destruction? (the triacs stay cold).
Thanks!
I'm building a little project that controls my lamps. I have 220V LED lamps installed everywhere.
In order to fit everything into a wall switch I had to use as compact components as I can.
So, I decided to use a Triac as a load switch. To isolate mains I use optocoupler.
I used a circuit from the datasheet:
Triac: BT134-600E (from aliexpress)
Optocoupler: MOC3021 (from aliexpress)
Problem:
When I start using the whole device at first everything works as expected. LED lamps are controlled fine. After some time (from minutes to hours) the triacs start to fail. One triac failed completely. Others just start leek some current in off state (so LED lamps start to flicker)
Question:
I'm I doing something wrong?
Can 220V LED lamps be the cause of triac destruction? (the triacs stay cold).
Thanks!
Attachments
-
14.2 KB Views: 46