ESP8266 Community Forum

- Fri Oct 16, 2015 1:15 am #31487 Hi
i have made this on a pcb and its working ok. now i want to add a fuse on 230v . Can anybody guide me where i should add the fuse for protection.

Thanks

esp8266-uln-relay_bb.jpg

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- Fri Oct 16, 2015 1:57 am #31490 uln2003 driving direct 230v? is it right?

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- Fri Oct 16, 2015 5:28 am #31504 if uln2003 is not right please recommend what to use

- Fri Oct 16, 2015 8:02 am #31521

uln2003 driving direct 230v? is it right?

I hope not, since ULN2003 or ULN2803 are rated for 500mA/50VDC maximum. Also, they are driving DC not AC.
It should only drive the relay coil with DC, which I hope in this case is lower, something like 12VDC or 24VDC.