I designing a circuit to turn on/off 230v mains from a PIC. I plan to control an 18W heater but would like it to be flexible up to 60W if possible (for bigger heaters).
Thanks to some great help in another thread I know how to correctly power the PIC at 5v from the mains supply. I wanted to do this as it seemed silly to have a package that involved incoming mains but also needed a DC power supply. Now I need help switching the outgoing mains.
I am trying to avoid suggesting my own solutions. However, an Omron G3VM-351B was suggested in another thread. This seems to offer a load of 120mA which would be fine for the 18W heater, but no bigger than 27W (if 0.12*230 is correct!). The smaller I can make the circuit the better, so an all-inclusive package like this looks nice. However, I am open to any option. A normal relay would be fine, but everything seems to suggest that this needs its own DC supply for isolation.
If anybody can provide circuits, links explaining the theory or suggestions that would be great.
Thanks to some great help in another thread I know how to correctly power the PIC at 5v from the mains supply. I wanted to do this as it seemed silly to have a package that involved incoming mains but also needed a DC power supply. Now I need help switching the outgoing mains.
I am trying to avoid suggesting my own solutions. However, an Omron G3VM-351B was suggested in another thread. This seems to offer a load of 120mA which would be fine for the 18W heater, but no bigger than 27W (if 0.12*230 is correct!). The smaller I can make the circuit the better, so an all-inclusive package like this looks nice. However, I am open to any option. A normal relay would be fine, but everything seems to suggest that this needs its own DC supply for isolation.
If anybody can provide circuits, links explaining the theory or suggestions that would be great.
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