Timeline for How to choose the correct inductor for my application
Current License: CC BY-SA 3.0
18 events
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| Jan 10, 2016 at 15:50 | history | edited | Escribblings | CC BY-SA 3.0 |
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| Jan 10, 2016 at 14:26 | history | edited | Escribblings | CC BY-SA 3.0 |
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| Jan 10, 2016 at 0:39 | comment | added | Escribblings | Once I know how induced Henry's relate to induced voltage and current I might be able to get somewhere. | |
| Jan 10, 2016 at 0:38 | comment | added | Escribblings | Not harsh at all @Andy aka, however I have already given the power values that the floating pieces need - 5v 20mA (0.1W) and 5v 200mA (1.0W). The pieces are separate so they can either both use the same size primary or have their own primary depending on what works best (or even both use the same primary and secondary if needs be). And yes it is totally acceptive that the pieces will lose power when being moved. I have found calculators to work out inductance values, but nothing that I can understand that relates those values to the power supplied inside the pieces. | |
| Jan 10, 2016 at 0:11 | comment | added | Andy aka | How much power do you need to transfer to the floating pieces? Concentrate on that. When you move the floating pieces (like some form of chessboard I presume) is it acceptable that the pieces lose power only to regain it upon placement on the "table". Work hard at this because so far, reading the question you are miles away from understanding the principles and are approximately at the point where you might believe fairies can influence this, Yeah that may sound harsh but do you want my opinion? | |
| Jan 9, 2016 at 23:27 | answer | added | Olin Lathrop | timeline score: 1 | |
| Jan 9, 2016 at 23:24 | comment | added | user80875 | Designing a transformer is not about working out inductance values. I know some of the basics and I have text books that probably contain the required information, but I have never done it and can not tell you how to do it. The sellers of the ferrite cores may have sufficient information online. There may be other sources of online information. I suspect that it is too much for anyone to answer here. If I knew more, I would be posting an answer, not a comment. | |
| Jan 9, 2016 at 23:19 | history | edited | Escribblings | CC BY-SA 3.0 |
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| Jan 9, 2016 at 22:55 | comment | added | Escribblings | OK @Charles Cowie, but even then, how do I work out what inductance values I need? I have found out online calculators to work out inductance values based on number of coils, diameter of wire and frequency. But I still don't know how that relates to the amount of current/voltage on the receiving part. | |
| Jan 9, 2016 at 22:06 | comment | added | user80875 | I suspect that yon need pairs of cores that look like this, but you may need to buy the cores and wind the coils yourself: famousconnections.eu/wp-content/uploads/2013/05/… | |
| Jan 9, 2016 at 21:59 | comment | added | user80875 | You don't really want inductors. What you are trying to design is the primary and secondary coils of a transformer that is either an air core transformer or an iron core transformer with an air gap. This question seems to be related: electronics.stackexchange.com/questions/13334/… | |
| Jan 9, 2016 at 21:31 | comment | added | Escribblings | I have been looking at data sheets here and don't know how to select what I need. .. (Each space will have a transmitter and each piece a receiver, but I plan to only supply power to the spaces where a piece is placed, not every space all the time). - coilcraft.com/prod_pwr.cfm | |
| Jan 9, 2016 at 21:25 | history | edited | Escribblings | CC BY-SA 3.0 |
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| Jan 9, 2016 at 21:20 | comment | added | Escribblings | pipe is quite correct. I wish to power movable game pieces via induction. Think of a chess board where the pieces are electric toothbrushes and each square are their chargers. @SunnyBoyNY I have 2 types of piece. Neither share the sabre spaces so can be configured differently if that is beneficial. 1 type of piece requires 5v/20mA (0.1W) supply. The other requires 5v/200mA (1.0W). | |
| Jan 9, 2016 at 21:15 | history | edited | Escribblings | CC BY-SA 3.0 |
updated info
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| Jan 9, 2016 at 20:49 | comment | added | pipe | @SunnyBoyNY He doesn't want a DC/DC-converter. He wants to transfer power wirelessly. I could be wrong, but I don't think you'll find many pre-assembled gameboards with that. | |
| Jan 9, 2016 at 20:45 | comment | added | user02222022 | This post is rather confusing. Why don't you give us your available voltage rail and the requirements? You might be better off getting a fully assembled switched mode power supply. | |
| Jan 9, 2016 at 20:39 | history | asked | Escribblings | CC BY-SA 3.0 |
