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[Script] is pretty lucky. One of the engineers who designed his cellphone included over-voltage protection in the circuit. Of course you probably wouldn’t know about this if there wasn’t a service schematic available. But a bit of searching around let him resurrect the fried USB segment of his Nokia N900. Now [Script] has been experimenting [...]

Tags:  cellphone usb script nokia-n900 voltage-protection circuitry cellphones hacks  

[Afroman's] latest video shows you how to add reverse voltage protection with minimal power loss. At some point, one of your electronic concoctions will turn out to be very useful. You want to make sure that a battery plugged in the wrong way, or a polarity mistake with your bench PSU doesn’t damage that hardware. [...]

Tags:  p-fet voltage protection voltage-protection minimal-power afroman misc hacks