autotransformer

[delahais]

hello,
i would like to know the formula for attenuations of tapped autotransformer, if someone can help me, thanks.

[4313B]

Question: 09-24-2003, 05:46 PM
Answer: 02-10-2005, 05:37 AM

Is that service or what!?

Ok. I put this graphic together after lifting the tapped autotransformer pic from here - http://www.allaboutcircuits.com/vol_2/chpt_9/5.html

This is something I've been meaning to put together for a very long time.

I am indebted to David Smith for supplying the fundamental formulas for my spreadsheet.

[4313B]

Modeling a tapped autotransformer courtesy of David Smith.

[4313B]

Another model using my software showing the spice data

David's LEAP Crossover Shop software is better in that it automagically calculates the secondary inductance value.

[Guido]

Hey,

good stuff Thanks.

Is there some formula to convert it to this series and parallel R/L substituting circuit?

You somewhere posted this for the 3145 network but it would be useful to be able to convert all the other networks with these tapped AT's

[4313B]

Is there some formula to convert it to this series and parallel R/L substituting circuit?

Not that I know of. Those conversions were all done the hard way. Greg Timbers supplied the original voltage drives along with a few suggestions and I had to plug and chug until the voltage drives looked identical. I never did get around to doing the 4315, L65, S21, or L220. I think Tim G might be able to import voltage drives into SoundEasy and do something with them.

[delahais]

Question: 09-24-2003, 05:46 PM
Answer: 02-10-2005, 05:37 AM

Is that service or what!?

Ok. I put this graphic together after lifting the tapped autotransformer pic from here - http://www.allaboutcircuits.com/vol_2/chpt_9/5.html

This is something I've been meaning to put together for a very long time.

I am indebted to David Smith for supplying the fundamental formulas for my spreadsheet.

hello,
i just see (saw?) your post, you don't forget me !
i'm very happy ...
very good post, thanks. fonzy

[Bruno GINARD]

Hi Fonzy,

I send you a P.M about this case

Regards