Timeline for Understanding a transformer datasheet
Current License: CC BY-SA 4.0
14 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 2, 2021 at 16:45 | vote | accept | phil-lavin | ||
| Jan 31, 2021 at 20:56 | comment | added | phil-lavin | I have edited the post to further describe the circuit being constructed | |
| Jan 31, 2021 at 20:55 | history | edited | phil-lavin | CC BY-SA 4.0 |
Expanded on the problem
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| Jan 31, 2021 at 20:50 | answer | added | Neil_UK | timeline score: 3 | |
| Jan 31, 2021 at 20:38 | comment | added | Tony Stewart EE75 | I think Phil needs to answer some questions ASAP. | |
| Jan 31, 2021 at 20:03 | comment | added | TimWescott | @TonyStewartSunnyskyguyEE75 "due to lack of inductance". But you could make a really big flyback transformer. | |
| Jan 31, 2021 at 20:02 | comment | added | TimWescott | Do you need faithful audio reproduction, or do you just need to power something at 25Hz? How faithfully does the output need to match the input? | |
| Jan 31, 2021 at 20:02 | comment | added | Tony Stewart EE75 | 25Hz is inconsistent with flyback transformers due to lack of primary L | |
| Jan 31, 2021 at 20:01 | comment | added | TimWescott | If you were absolutely bound and determined to do this with a transformer, you could probably start with this one, take it apart, and rewind it to the correct ratio. Or you could have one custom-made. Transformers have to be designed with the specific purpose in mind, and 25Hz step-up applications are not thick on the ground -- so you aren't going to just buy a suitable one. | |
| Jan 31, 2021 at 19:56 | comment | added | TimWescott | This has the look of an XY problem. A transformer that will step 12V up to 75V and carry 3W of power at 25Hz is going to be much larger than a transformer designed for 125kHz, it will probably not be "small", and it'll be hard to find because 25Hz is such a low frequency. So what are you really trying to do? | |
| Jan 31, 2021 at 19:55 | answer | added | Justme | timeline score: 5 | |
| Jan 31, 2021 at 19:48 | comment | added | TimWescott | "Required output current is no more than 3W." A Watt is a measure of power, not current. If you want three watts of power, say so. If you want some amount of current, give a number in amperes. | |
| Jan 31, 2021 at 19:40 | comment | added | Tony Stewart EE75 | 25 Hz? 12V rms? at what source impedance? Resistive load? load regulation error? | |
| Jan 31, 2021 at 19:06 | history | asked | phil-lavin | CC BY-SA 4.0 |