gowtham velusamy
Newbie level 6
Hi
I have used three BTA 24(TRIAC) for switching three loads via microcontroller. MT2 terminal of each triac are commonly connected to the PHASE of the 230VAC. Also, i have used manual switch for each load for the purpose of switching the loads ON/OFF instead of the MCU.
I have 1xMain and 3xmanual switch. The main switch controls the Phase in for the triac, so that when the main switch is OFF, the loads do not ON/OFF via the triac. The manual switches are the ones are for turning on/off my loads manually when i dont use my triac (consider the switches on a switch board) Please refer to the diagram in the attached image.
Coming to the problem.
When my main switch is OFF, the entire 3 triacs must be useless, and i get to turn ON the load only by means of the manual switches and not the triac. But in my case, say, when i turn ON load1 using the manual switch and trigger the gate of the triac1, it gets to turn on my other loads also inspite of the main switch being OFF. How can i overcome this problem?
I have used three BTA 24(TRIAC) for switching three loads via microcontroller. MT2 terminal of each triac are commonly connected to the PHASE of the 230VAC. Also, i have used manual switch for each load for the purpose of switching the loads ON/OFF instead of the MCU.
I have 1xMain and 3xmanual switch. The main switch controls the Phase in for the triac, so that when the main switch is OFF, the loads do not ON/OFF via the triac. The manual switches are the ones are for turning on/off my loads manually when i dont use my triac (consider the switches on a switch board) Please refer to the diagram in the attached image.
Coming to the problem.
When my main switch is OFF, the entire 3 triacs must be useless, and i get to turn ON the load only by means of the manual switches and not the triac. But in my case, say, when i turn ON load1 using the manual switch and trigger the gate of the triac1, it gets to turn on my other loads also inspite of the main switch being OFF. How can i overcome this problem?
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