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Re: Transformer Measurement

 投稿者:jazbo8  投稿日:2017年11月 1日(水)00時35分16秒
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  > No.16992[元記事へ]

Thanks, also I noticed that for the single-ended OPT's, you did not apply DC current to the primary winding, would that affect the inductance reading compared to when it is used in the actual circuit?

> jazbo8さんへのお返事です。
>
> > How did you measure ep and eR to generate the Zo vs. frequency graph? Just with AC voltmeters?
>
> I used two-channel AC voltmeter and a floated output AC generator controlled by PC.
> Although differential inputs voltmeter is the best one, I have a voltmeter with common ground input, so upper terminal of a primary winding is grounded and hot terminals of voltmeter are connected to the oscillator to measure eR and eP.

http://ayumi.cava.jp/audio/pow/img76.png

 
 
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