[Oberon] Re (2): Re (2): File transfer.

[Skulski, Wojciech]

> But how about if we really need to connect RS232 signals to USB,
> because different signal are levels used there.

> RS232 - "0" ~ -12V, "1" ~ +12V
> USB   - "0" ~ 0V, "1" ~ +5V

> I can imagine RS232 -> USB is easy as to dropping voltage from 12V.

> But how about USB -> RS232? Does not seem possible to transform 5V->12V
> without external 12V power supply.

Here is the relevant FTDI cable. http://www.ftdichip.com/Products/Cables/USBRS232.htm

I also attached a schematic page in case you want to build something on your own.

Wojtek



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