[Packet] Correction...Packet] GPS power???

Thu, 5 Dec 2002 16:10:24 -0800

Unless they've changed the spec, the power supplied on USB is not of a =
specific fixed voltage, such that for virtually all applications, a =
voltage regulator would be required by any device deriving its power =
from the cable.  I don't recall the exact range of voltages that can be =
supplied but I think 8 to 20 VDC is in the right range.  I beleive the =
PS/2 keyboard connector is spec'd at 5 VDC, as I don't recall a voltage =
regulator in any of the keyboards I've taken apart.  And the keyboard =
does need something to run the keyboard scanning controller CPU and =
LEDs.

73, Bob, KD7NM

>-----Original Message-----
>From: [email protected]
>[mailto:[email protected]]On Behalf Of KD7JYK
>Sent: Thursday, December 05, 2002 3:36 PM
>To: [email protected]; [email protected];
>[email protected]; [email protected]
>Subject: [Packet] Correction...Packet] GPS power???
>
>
>Seems the USB and PS/2 provide regulted +5VDC nowadays.  I may=20
>have had some
>oddball stuff in the past that gave me the idea of parallel=20
>and serial ports
>providing power...  That IBM stuff can mess with your mind!
>
>Kurt
>
>---
>Ross Technologies Signals Intelligence Division
>Rosetta Proving Grounds
>
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