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RE: B vs H/ Transformer analogies of Poynting Vector.
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- Subject: RE: B vs H/ Transformer analogies of Poynting Vector.
- From: "Tesla list" <tesla@xxxxxxxxxx>
- Date: Tue, 26 Apr 2005 11:59:19 -0600
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Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx>
At 08:35 AM 4/26/2005, you wrote:
Original poster: "Ralph Zekelman" <gridleak@xxxxxxxxxxxxxx>
A little off the thread topic:
Does anyone have a schematic for an
arrangement that will show a B vs H curve on an oscilloscope?
Two windings on the core in question, one many turns, one just a few.
Measure the current through the many turn coil with a series resistor
That's related to the H (the magnetizing field).
Measure the resulting induction (B) with another coil on the core.
Here's an example:
Tektronix also makes a software widget for their scopes that directly
displays the B-H curve.
Here's a EE lab exercise for measuring transformer characteristics... Look
at figure 3