Vics right. On some LCR meters, they only have a few test frequencies,
generally up to around 100 KHz or so, the expensive ones maybe 1 MHz.
However, some have an external frequency jack where a signal generator can
be connected. You select external frequency with a switch and connect to
the ext. jack with the generator.
Will
On Wed, 09 Feb 2005 08:15:55 -0800, Vic Rosenthal <vic@rakefet.com> wrote:
Angel Vilaseca wrote:
Now to obtain .5 mH it will take much more than just one or two turns.
To know how many, you will need some way of measuring inductance. Add
windings until you reach your target value.
Keep in mind that when you measure inductance of a toroid you must do it
at the operating frequency, since the characteristics of the core
material vary with frequency. I find the MFJ and Autek antenna
analyzers useful for this. An inductance meter that does not allow you
to select the measurement frequency may give incorrect results.
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