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Electrical Engineering

Questions tagged [isolation]

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Allowing for the flow of power or information without shared electrical nodes

876 questions
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1 vote
1 answer
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I am trying to switch 9 V to a load with a logic level signal from a microcontroller. The microcontroller has a separate voltage source from the 9 V. I am not sure where I should put a flyback diode ...
Grant Williams's user avatar
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2 votes
1 answer
107 views
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Global goal : I have a non compliant 5V I2C bus (side A of a MAX14937 isolator). In practice, it means that all devices (excepted the MAX14937) must have an output low voltage <=0.4V, and and ...
Sandro's user avatar
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3 votes
2 answers
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I have built a prototype to measure two distances using two time of fligth (TOF) sensors based on VL53L0X IC (from this manufacturer) which are connected to an Arduino board. Due to the environment ...
bardulia's user avatar
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2 votes
1 answer
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I am designing a high-side/low-side MOSFET drive using the IR2101. My setup has three different supply domains: Arduino: Provides HIN and LIN signals (5V logic) Referenced to GND IR2101 Gate Driver: ...
Muhammad Haris's user avatar
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1 vote
3 answers
170 views

I was tasked to do a preliminary study, to check if we can add relays for a 320Vdc distribution board (inside a subsea robot). Space is quite limited, and therefore feasibility will (partly) depend on ...
Sandro's user avatar
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5 votes
4 answers
654 views

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 ...
user16307's user avatar
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-2 votes
2 answers
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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\$ ...
ankit kumar's user avatar
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-1 votes
2 answers
126 views

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 ...
AKTanara's user avatar
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5 votes
3 answers
742 views

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 ...
MarianD's user avatar
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2 votes
1 answer
163 views

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 ...
Sam Shabz's user avatar
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1 vote
2 answers
149 views

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 ...
J. Street's user avatar
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1 vote
1 answer
95 views

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 ...
Bikay's user avatar
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8 votes
7 answers
2k views

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 ...
CaveScientist's user avatar
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0 votes
5 answers
172 views

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 ...
Marcos's user avatar
  • 144
0 votes
0 answers
65 views

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 ...
mastupristi's user avatar
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