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Because you can. Why split the architecture across multiple machines when it works on one. Do you have any recommended links to that galvanic isolation I could
by hcfman 2y ago
Because you can. Why split the architecture across multiple machines when it works on one.
Do you have any recommended links to that galvanic isolation I could look at ? I’m encouraged by your view on this.
- 15155 2y agoI don't really want more Linux boxes floating around if I can help it. https://www.analog.com/en/products/adum6000.html https://www.analog.com/en/products/adum6000.html Things like this are a fancy way to go about it - otherwise very-filtered flyback will probably get you where you need to be.
- hcfman 2y agoI've tested this device and that works. Nice clean power on the microphones whilst running over POE. https://thepihut.com/products/power-filter-board-for-raspberry-pi https://thepihut.com/products/power-filter-board-for-raspber... The chip you point to suggests a much simpler approach. Is it really that simple? There are a great many more bits on the board I point to. Why would they take a hard way if one simple chip can do it ?
- 15155 2y agoThe board you linked isn't a galvanic isolator, it's just a capacitor bank covering a bunch of different frequency ranges. The ADUM isolator I linked as well as flyback converters use transformers to provide a high-voltage isolation barrier between the source and device being supplied. Transformers are generally larger, more expensive, and less efficient than non-isolated DC circuits. The POE supply itself is isolated (with a transformer) and doesn't need to be noisy necessarily - but if you want even more quiet, another level of isolation can't hurt.
- hcfman 2y agoInteresting. Do you know of any built products that use the approach you are suggesting ?