Questions tagged [isolation]
Allowing for the flow of power or information without shared electrical nodes
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Would this coating suit for isolating the copper side of a stripboard from outside world?
Here is an example of the bottom side (copper side) of a strip board with solder:
I sometimes need to use strip board to couple things. I then check if there's any short via continuity test. But as ...
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Converting a differential signal into a single-ended signal
I have to make an isolated voltage sensor using an isolated amplifier (AMC1300, link to its datasheet). It produces a differential output centred around its common mode voltage, \$1.44V\$ ...
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How connect MCU with non-isolated power supply to PC?
I have a smart device with ESP32-S3 Wroom as MCU. The power supply is a non-isolated offline buck switching (MP175GS). In this circuit Phase line is feed directly to the circuit as Ground and Null ...
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Linear rheostat - where lies a trick of a sliding contact with isolated wire?
This type of linear rheostat consist primarily of an isolated wire (wound around an isolated cylinder) and a sliding contact:
(Source: Linquip - Rheostat Function: The Complete Guide to How Rheostats ...
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What is the maximum potential difference between two isolated circuits?
My question is regarding the theory behind the difference in potential between two isolated circuits - both floating relative to earth. This is particularly relevant in HV applications, to prevent ...
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How can I get this optocoupler to work with both the Power Supply and 9V battery?
I'm currently working on a project where I have a circuit that needs to be updated since it needs to have some sort of isolation added to the terminal block inputs to prevent the user from damaging ...
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Can two MCUs communicate through SPI, if their supplies are from two isolated DC/DC convertors?
The situation is like this:
a common voltage source of 12V is available.
Two PCBs, each with its own MCU that is powered from that 12V, using its own isolated DC/DC convertors.
(example of the ...
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Why is it dangerous to connect a nonisolated device to USB?
I was about to make a self-powered USB device that works on its own and sometimes connects to a host. I realized my only option might be powering it with an isolated power supply. I want to fully ...
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Isolating only RS485 digital signals but not power
I am redesigning a battery powered system that communicates with other RS485 systems. The battery powered device provides the supply for the other external systems.
In the old design there was ...
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Does it make sense to galvanically isolate the control of a USB pass-through switch?
I'm designing a small board that allows, via a microcontroller powered from a separate USB port, to open/close the VBUS line between two USB ports (for example, to automate testing of USB-powered ...
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Differential reading of shunt resistance measurement in High Voltage
I'm currently trying to read the current drawn by a sensor (a cold cathode gauge) that is supplied with a High Voltage (1kV up to 4 kV) DC supply. The sensor draws very small currents in the order of ...
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What is the best strategy for measuring high voltage AC signals with microcontroller?
I have an AC waveform that can rise to about 120V peak and 10A at a variable frequency between 50-150kHz. I would like to use something like an optocoupler to scale this voltage to something logic-...
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Looking for a solution to do -1200 V measurement [closed]
I'm looking for a solution (probably with isolated amplifier) in order to do a measurement of a DC/DC output at -1200 V.
I saw that Texas has the ISO224 with differential input (negative tolerant), ...
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How to monitor AC lines with isolation?
I'm working on a project to safely monitor a 3-phase, 220V AC line with a microcontroller for power metering. My goal is to measure RMS Voltage, Real Power, Reactive Power, Apparent Power, and Power ...
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Isolated and multiplexed STM32 UART
Ok, this might be a silly question, but i'm kind of new to STM32 development.
I am designing a custom board that, among other things, it communicates with eight array of sixteen independent boards, ...
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