Hi Everyone,
Â
Last chance for seminar that pioneered presenting most major concepts with
demos! http://emcesd.com/bcsem_hfmeas.htm ⦠Nothing like it in the EE ;
space. Mix a little of the Olde West with demonstrated design and
troubleshooting techniques. Next week!
Â
Here is an example from the section on EMC: The E-field shielding of magnetic
field probes only works for one special case and the shielding causes resonance
problems when used in the near field that unshielded loops do not cause. For
most uses I have seen of magnetic field probes, especially in the near field,
the shielding does not work and causes errors whereas, in the near field, most
of the time, unshielded probes work better without inducing a troublesome
resonance. The E-field response of any magnetic loop can be checked in about 5
seconds, learn how!
Â
By near field above, I do not mean 377 Ohm wave impedance but that the loop
must be much farther from the transimitting structure than the size of the
structure.
Â
There are also sections on SI and design troubleshooting to find problems,
especially hidden ones that can escape detection in the lab and go on to
produce chaos in the field.
Â
Doug
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