Comment by treis
3 hours ago
"just work" depends on the DC voltage, right? A heater works just fine on 120V DC but less well on 48 and probably pointless on 5.
3 hours ago
"just work" depends on the DC voltage, right? A heater works just fine on 120V DC but less well on 48 and probably pointless on 5.
I get what you're saying, but there are some hand warmers that just charge off of USB 5V.
Right it works if it's designed for it. But hooking up a 5V source to a stove element isn't going to cause much heat.
V=IR applies. I've seen 900 watt heaters running on just 3 volts. You need big wires and low resistance to pull it off but it works