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| 8 ratios in one transformer alternatives |
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| gkmaia:
That is where I am at. Bought a new 500ma iron core transformer. Put it in hot water to remove the iron plates. Build a little 3D winding shaft and attached it to my mini lathe and counter. It will be easy now to wind it. The transformer secondary had 114 turns at 9v. At 240v primary this would give me 3040 turns. Which seems right as it is a rounded ratio. I had a bit of a go and winded 130 turns on the secondary to see how that pans out. Any advice on an easy setup to how to test the new winding? Signal generator or mains on primary? Secondary with load resistor or not? |
| Zero999:
The output voltage will drop under load, so there should always be more secondary turns, than the ratio would predict. If a 9V transformer has 114 turns on the secondary, then it will have about 10% less than 3040 on the primary. |
| tkamiya:
What about using multiple transformers? Depending on current requirement, it wouldn't be that bulky. |
| gkmaia:
Yes, two is a good idea. That is the outcome. |
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