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paulsherwin · 13th May 2019, 10:24 am

Should be fine. You could use a linear regulator or a zener and resistor if you have the parts to hand.

Actually, there's a good chance that it will be OK if you just bung 5V into it, but it's better not to take the risk.

13th May 2019, 10:24 am	#2
paulsherwin Moderator Join Date: Jun 2003 Location: Oxford, UK Posts: 27,944	Re: Deriving 3v at 30mA from 5V Supply Should be fine. You could use a linear regulator or a zener and resistor if you have the parts to hand. Actually, there's a good chance that it will be OK if you just bung 5V into it, but it's better not to take the risk.