Hi all,

At 08:14 PM 9/15/98 +0000, you wrote:
>The loop method tests only for current (especially if terminated as I
>advocate). For voltage (E field) a prod probe is more useful. This can be
>a unmodified scope probe set to x 10 with the clip-on gripper prolonged by
>a 25 mm piece of rigid wire, as antenna. The x10 setting is essential
>imho. The probe is "calibrated" in the same way as above.

Maybe I m way off, but I don't see how it is possible to test only for
"current(B field)" or only for "voltage(E field)" Maxwell's equations
require that an EM wave in free space have the same E field strength as B
field strength. One determines the other. So, if you know the B field
strength, you know the E field strength. Of course, this only applies to
oscillating fields, if there is a steady state E or B field as well, then
that will be added into the solution, but that doesn't matter for EMC.

Sean

+--------------------------------+
| Sean Breheny                   |
| Amateur Radio Callsign: KA3YXM |
| Electrical Engineering Student |
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