[Amps] Silly Inductor Question

[Vic Rosenthal]

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.

-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco