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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: RE: Determining P to P impedance in an unknown OPT posted by DAK on April 3, 2013 at 00:53:58:
Here's an example:
24V on primary, measure 0.80V and 0.56V on secondary taps.
Ratio is 30 : 1 and 42.8 : 1
Impedance ratios are 900:1 and 1836:1
So it's 7.2K:8, 7.3K:4 (14.4K to 16 is unlikely...)
The actual load impedance will be be a bit higher than this measured ratio, due to the winding resistance. If you measure the ratio with an 8 Ohm load on the transformer, you'll be including this effect, and ratio will be a bit higher.
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Follow Ups
- RE: Determining P to P impedance in an unknown OPT - Tom Bavis 04/3/1307:17:35 04/3/13 (0)
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