Jan Hoevers wrote on 8-10-2007 8:32: > Chuck wrote on 8-10-2007 3:12: >> instead opting for an inline fuse > I would dump the fuse to. Even a fast blow fuse is much to slow to > protect the electronics of the usb port you use as power supply, so it's > useless. > Fuses are to prevent fire in the home. In a power supply the fuse goes > between the mains connector and the transformer, not on the output. > Besides, I've never seen a fuse in an usb device, I suppose usb ports > have an electronic overcurrent protection.
One more remark about that fuse in the USB line: I usually work with used equipment, but if you have a valuable motherboard you may not feel comfortable using its USB port to power outdoor rooftop devices (think of static discharge). I guess that weird fuse idea must have come from that (but fuses won't work as static protection either). You could use a cheap self powered USB hub as a power source. Those things with their own wall-wart I mean. With no USB attached, they are still a cheap 5 volt supply, and you were planning the USB plug anyway. They come as cheap as 10 or 20 euro; blowing that is better than blowing a mobo... Jan _______________________________________________ timekeepers mailing list [email protected] https://fortytwo.ch/mailman/cgi-bin/listinfo/timekeepers
