Activity for jonathan_the_seagullâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Comment | Post #290595 |
I am sorry that I was not clear in my post about the high voltage conductors at the secondary. This is what I meant: the secondary voltage can be 5 V or 10 V but with respect to a 10 kV reference. Thank you for your answer. (more) |
— | 3 months ago |
| Edit | Post #290591 |
Post edited: |
— | 3 months ago |
| Comment | Post #290591 |
The number of layers can be 4. The secondary voltage is low (maybe 5 V or 10 V) but with reference to a 10 kV reference. (more) |
— | 3 months ago |
| Edit | Post #290591 | Initial revision | — | 3 months ago |
| Question | — |
High voltage transformer design Suppose I have a planar PCB transformer. The primary and secondary coils are printed on different PCBs. The core is inserted through these PCBs to link the two coils. The primary is at a low voltage and the secondary could be sitting at some 10 kV for example. Also, assume that the chosen PCB dielect... (more) |
— | 3 months ago |
| Comment | Post #290448 |
I was given this as a project to work on. The isolation requirement is 18 kV rms. The secondary side will be at a higher potential. This is just an initial design for my understanding. I will have to look into it much more than what I currently know. Thank you for your comment. (more) |
— | 4 months ago |
| Comment | Post #290459 |
Everything seems to be clear now. I had a lot of confusion about why the magnetic flux density was so low even for multiple core cross-sections. Thank you for your answer. (more) |
— | 4 months ago |
| Edit | Post #290448 | Post deleted | — | 4 months ago |
| Comment | Post #290448 |
In the link to the website that I posted, there is a graph that shows the desired flux density for various switching frequency values. At 400 kHz, the required flux density required to minimize core losses is specified to be close to 400 Gauss which is 0.04 T. Is this correct? (more) |
— | 4 months ago |
| Edit | Post #290448 |
Post edited: |
— | 4 months ago |
| Comment | Post #290448 |
I have added a link to the core considered to the post. This specific topology is considered to ensure isolation between the supply and the load. I am in the process of creating an initial design for the transformer. The winding ratio is 1.5:1. I haven't selected the number of primary windings needed... (more) |
— | 4 months ago |
| Edit | Post #290448 |
Post edited: |
— | 4 months ago |
| Comment | Post #290448 |
I have added units to all my equations. Would you please tell me if the saturation magnetic flux density is correct? In the link that I mentioned, it is approximately 0.04 T at 400 kHz for Ferrites. The area-product value is too low and doesn't make any sense. (more) |
— | 4 months ago |
| Edit | Post #290448 |
Post edited: |
— | 4 months ago |
| Edit | Post #290448 |
Post edited: |
— | 4 months ago |
| Edit | Post #290448 | Initial revision | — | 4 months ago |
| Question | — |
Transformer design for a Series Resonant Converter I am determining the Area-Product of the core required for a transformer to be used within a series resonant converter. The specifications are as follows: - Switching frequency = 400 kHz - Primary current = sine wave with a peak value of 500 mA - Power output = 1 W These are my calculations: ... (more) |
— | 4 months ago |
| Edit | Post #287969 |
Post edited: Added hyperlinks. |
— | about 1 year ago |
| Suggested Edit | Post #287969 |
Suggested edit: Added hyperlinks. (more) |
helpful | about 1 year ago |
| Edit | Post #287543 | Initial revision | — | over 1 year ago |
| Answer | — |
A: How to calculate the voltage of a coil? I suppose what you are asking is: "How to increase the strength of the magnetic field in a solenoid?" This can be done by increasing the number of turns of the solenoid as well as by increasing the current through these coils. (more) |
— | over 1 year ago |