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I always "forced" my superiors to buy isolated CAN interfaces. They simple always work as soon termination is OK and the right baud-rate is selected. Also no currents can flow between your device under test and the PC. less chances to damage something always works So in my opinion: worth the money Edit: https://www.kvaser.com/products-services/...


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I would run the DALI circuit on a grounded DC supply, the grounding gives you protection in the event of a failure of the basic isolation. and makes it safe and easy to probe voltages and signals. This may require fuses to prevent large fault currents from entering the DALI bus Once you get the grounded system working you may want to consider changing it to ...


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What is the proper way to isolate the I2C lines of two devices where one is powered on and the other can be powered down? I'm not 100% sure if isolation is even necessary, but I suspect it is. It usually isn't. You'd keep the MCU powered, but put it into "STOP" mode or similar, at which point it consumes no power (but for some nA or less for ...


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The 10k pullup resistors must be on the switched 5V side, so when MCU is powered down, the bus will go to 0V too, and the pull-ups do not back-feed the MCU via the I2C bus. Now, since it is not in the diagram but you say you have a battery on RTC VBAT, you can ask youself if it makes any sense to leave 5V always on at the RTC VCC so maybe all the 5V can be ...


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Why Do I get shock When standing on a barefoot while touching a live wire When There's no return path If there is no return path you will not be exposed. But there is a return path: the ground wiring in your home is tied to earth through a pad or rod, and to neutral at the panel. This means that the ground under your feet is electrically connected to the ...


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One of the misconceptions you are struggling with is earth resistance, you seem to think that earth resistance increases with distance. In reality earth resistance is a constant, if you can measure 1 ohm resistance between two electrodes a metre apart, you will also measure 1ohm between two electrodes 100m apart or 10km apart. What happens is that there are ...


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The floor and soil don't have an overly low specific resistance, but it provides a lot of area for the current to flow through (as do your feet compared to the contact area of a wire). Combine this with the fact that wall voltages are high and not much current needs to flow to do some damage to your body. So it follows that if the resistance between the ...


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No problem with the model, the linear input voltage range is + - 2.5 V for 3.3 V VDD2. The gain is 1.


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The maximum Vin is 2.5V, you're going up to 3V in your graph.


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According to the datasheet, input voltage range is -0.1 to +2.0V for guaranteed linear operation. For +2V in the outputs will typically be Vcm - 1V and Vcm + 1, where Vcm is 1.44V typically. The Absolute Maximum ratings are not for operation, they indicate what externally applied voltage might immediately damage the chip.


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Because you should use a filter and then a LDO and then yet another filter, ferrite bead. This DPAN02A-05 actually has a dual output +/-5v which you dont use it correctly. You should indeed find some low ripple, low noise 3.3V & 5V converter.


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Depending on your budget, there are different ways you can power up your device with mains AC (e.g. transformer based AC/DC converters or the ones with out it, which usually use a capacitor in series with your bridge rectifier, however this has way lower safety). Galvanic isolation is a big safety feature present in power supplies. a normal AC/DC converter ...


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