Software/Spreadsheet for transformer calculation - Page 1
Forum section: electronics / projects

author: aless2056
author_rank: Contributor
timestamp: September 24, 2023, 01:11:33 pm
content: Guys, does anyone have any software or a spreadsheet with calculations for transformers?

author: soldar
author_rank: Super Contributor
timestamp: September 24, 2023, 01:35:01 pm
content: I have not designed a transformer in ages but if you give us your specs maybe I or others could give it a shot.

author: Zoli
author_rank: Frequent Contributor
timestamp: September 25, 2023, 06:07:35 am
content: Write yourself one based on:http://ludens.cl/Electron/Magnet.html, as I've done myself for my specific needs(hf toroids).

author: aless2056
author_rank: Contributor
timestamp: September 26, 2023, 12:01:46 am
content: I wanted simple software or a spreadsheet to calculate single-phase transformers up to 500VA

author: Terry Bites
author_rank: Super Contributor
timestamp: September 26, 2023, 09:11:58 am
content: like this?

author: soldar
author_rank: Super Contributor
timestamp: September 26, 2023, 09:23:50 am
content: Quote from: Terry Bites on September 26, 2023, 09:11:58 amThat's for large distribution transformers. The OP is looking for "single-phase transformers up to 500VA".

author: jonpaul
author_rank: Super Contributor
timestamp: September 26, 2023, 03:44:23 pm
content: You want to design and build a 500 VA mains transformer for 120 or 240 V ?DES: The normal desing process is to choose a lamination, core size and stack according to the VA and mains freq, then to calculate turns ratio, and finally the wire sizes and # trurns based on bobbin winding area.There is no spreadsheet that does this to my knowledge.The software we used for decades was Intusoft Magnetics Designer,http://www.intusoft.com/mag.htmOne of the best and easiest to use.But sadly the creator passed away, but it is still available.Fab:How many do you need? Just one?Are you familiar with safety, wire, bobbins, laminations, impregnation?I do not reccomend DIY transformers for mains use.Off the shelf transformers are readily avail, see Mouser/DK/RS/Farnell.Jon

author: johansen
author_rank: Super Contributor
timestamp: September 26, 2023, 03:59:13 pm
content: I built one, back in 2010-11they are attached.basically its a brute force method of calculating the available area, then path length, then lookup tables for the wire diameter and how many can actually fit. it will happily work with 120% fill factor and negative bobbin thickness, so you have to verify all the numbers in the spreadsheet are accurate.it does not have any leakage inductance calculation so you can expect a little more voltage drop under load than what is predicted.the inductor calculator spreadsheet is similar, it does not calculate fringing flux but it does work up the inductance from first principles properly.

author: arjen
author_rank: Contributor
timestamp: April 25, 2024, 08:47:26 am
content: Have you considered creating a database to store and manage transformer data? Using a [spam link removed] relational database airtable could be beneficial, allowing you to organize and analyze transformer specifications more effectively. With a structured database, you can input transformer parameters and perform calculations as needed, customizing it to suit your requirements.