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Wed, 15 May 1996 07:55:02 -0500 (CDT) |
| From [log in to unmask] Thu May 16 13: |
22:31 1996 |
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On Wed, 15 May 1996, Microsoft Windows wrote:
> Would like to ask for some help on getting some definitions. I am looking for a simple definition for inductance and characteristic impedance. I am presenting to a group that is new to CI and would like to keep things simple and easy to understand.
>
> Thank you in advance
>
>
>From IPC-D-316 (Microwave Design)
"Characteristic Impedance (Zo): For a uniform transmission line of any
length, the ratio of inductance per unit length to capacitance per unit
length. A 50 ohm characteristic impedance is often used because it
matches that of most test instrumentation. When a signal propagating
along a transmission line encounters a change in Zo, scattering of the
signal will occur, that is, some of the signal will be reflected
backwards along the line."
>From IPC-D-317A (High Speed Design)
"Inductance - The property of a conductor that allows it to store energy
in a magnetic field induced by a current flowing through it. Units of
measure: Henry."
Regards
__________________________________________________
David W. Bergman, Technical Director
IPC
2215 Sanders Road
Northbrook, IL 60062-6135
847-509-9700 x340 Phone
847-509-9798 Fax
email [log in to unmask]
www http://www.ipc.org
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