27 Apr '14, 2pm

Galvanic Isolated FTDI Board Saves Your USB Ports

Galvanic Isolated FTDI Board Saves Your USB Ports

Our computers are often wired directly into the circuits we’re hacking on. In days past that might have been a parallel or serial port. Today it’s almost always USB, specifically serial over USB. USB has some safety features built-in, such as current limiting. However, it isn’t too hard to blow up a USB port, or even a motherboard with high voltage. Galvanic isolation is a method of removing any electrical connection between two circuits. Connections can still be made through optical, magnetic, or capacitive methods, just to name a few. One of the simplest methods of galvanic isolation is the humble optocoupler.

Full article: http://hackaday.com/2014/04/27/galvanic-isolated-ftdi-sav...

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