Questions tagged [toroidal]

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47 views

Can I Connect Two Totally Different Transformers in Series?

I have 2 totally different toroidal transformers I want to put in series to make 75vac total. I have a decently large toroidal transformer in which I wound many, many turns of 10 gauge wire around. To ...
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2answers
126 views

Which way of winding the toroid ferrite ring is correct?

Following my previous question I'm trying to prepare a test to see the effect of a torodial ferrite ring. The setup will be simply as below: simulate this circuit – Schematic created using ...
1
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1answer
110 views

What's inside this current limiter?

This component was inside an isolation transformer. It's obviously for limiting inrush current, but how does it work and what is inside? I believe it's a relay of some sort, switching a resistor in ...
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1answer
87 views

DIY transformer (toroid) waveform

Update Ok, it may be related to the adhesive I'm using to glue the toroids on the 3D prints.. I'll wait till tomorrow for it to cure and test again.. I'm trying to build a portable/battery ...
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2answers
465 views

bobbin vs toroidal inductors

I bought 100uH inductor for my boost converter, one toroidal (DTPU100A3) and one bobbin (DSZ-9/100/2,2-V), both form faryster. In the beginning, I thought both will give me same results, but the ...
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2answers
411 views

Questions about SMPS Toroid winding

I'm making a simple SMPS to create multiple isolated outputs to audio effects circuits. I need to make a toroid pulse transformer which has one primary and at least 10 secondaries. These secondaries ...
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1answer
1k views

Calculate required toroidal core size(Cross section area) for transformer [duplicate]

How to calculate required toroidal core size(Cross section area) for 200VA transformer.is that any formula or method to select core.I mean to say suppose I won't make 200VA toroidal transformer so how ...
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2answers
482 views

Can I overlap magnet wire when wrapping a toroid or must it progress linearly around the circumference?

I've been playing with inducing magnetic fields in a ferrite toroid with turns of magnet wire. Can you overlap, e.g. double back over the previous turns so I don't need a larger toroid?
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1answer
916 views

How to connect toroidal transformer from wall power

How to I connect 240v from a wall powerpoint to a toroidal transformer? I've searched all over, and I'm a complete novice, and I cannot find anything that explains what I need to know at my level of ...
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3answers
1k views

How should I properlly draw on a schematic a shunt going through the center of a toroid coil?

So I'm trying to reverse engineer the schematic for an Avair AV-200CN SWR bridge. Two toroid coils, used for sensing, are mounted on a shunt, so that the shunt goes through the center of the coils. ...
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2answers
909 views

Inductors, Toroid or EE Core?

I'm designing a voltage mode PSU for learning purposes. I've noticed that powdered iron toroids are almost exclusively used in the construction of PFC inductors as well as in low voltage boost ...
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1answer
146 views

Current in Secondary Windings of Toroidal Transformer

I am trying to design a toroidal transformer with multiple secondary coils. The core of the transformer is rated at 2500VA. Each of the secondaries powers a dc servo motor wich is subjected to a ...
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1answer
692 views

Toroidal inductors - Heat Problem

I'm working on an isolated 2-sw forward converter. The output section has a toroidal inductor that I've a problem with. Here's how the output section looks like: simulate this circuit – ...