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Author Topic: designing a 1:1 isolation transformer  (Read 2281 times)

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Offline electronics manTopic starter

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designing a 1:1 isolation transformer
« on: July 14, 2015, 07:18:30 pm »
i want to make a 1:1 transformer, i have a 4250nH core, how many turns of wire will i need at approximately 50KHz?
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Offline T3sl4co1l

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Re: designing a 1:1 isolation transformer
« Reply #1 on: July 14, 2015, 09:15:56 pm »
What are you isolating?  Does it carry DC?  Sine, square, ... waveform?

How big is the core (l_e, A_e, A_w)?  How much loss does the material have at that frequency?

Ed: mods, suggest merge with https://www.eevblog.com/forum/beginners/transformer-core-inductance/?topicseen

Tim
« Last Edit: July 14, 2015, 09:17:33 pm by T3sl4co1l »
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Offline electronics manTopic starter

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Re: designing a 1:1 isolation transformer
« Reply #2 on: July 14, 2015, 10:30:08 pm »
http://www.rapidonline.com/Electronic-Components/4250nH-MagDev-RM10-F48-Ferrite-Core-67-1025 this core and it will be a 12v square wave with no dc component
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Offline T3sl4co1l

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Re: designing a 1:1 isolation transformer
« Reply #3 on: July 14, 2015, 11:52:33 pm »
3 turns or more.
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Offline electronics manTopic starter

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Re: designing a 1:1 isolation transformer
« Reply #4 on: July 15, 2015, 09:16:47 am »
Quote from: T3sl4co1l on July 14, 2015, 11:52:33 pm
3 turns or more.
how did you work that out?
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Offline T3sl4co1l

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Re: designing a 1:1 isolation transformer
« Reply #5 on: July 15, 2015, 09:29:59 am »
N = Vpk / (4 * Bmax * F * Ae)

Lots of resources online, e.g. http://seventransistorlabs.com/tmoranwms/Elec_Magnetics.html

Tim
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