Questions tagged [isolation]
Allowing for the flow of power or information without shared electrical nodes
873 questions
1 vote
3 answers
157 views
Creepage/clearance distances for regulated 320Vdc
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 ...
- 9,616
5 votes
4 answers
649 views
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 ...
- 12.5k
-1 votes
2 answers
125 views
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 ...
- 513
2 votes
1 answer
160 views
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 ...
- 47
1 vote
1 answer
94 views
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 ...
- 313
0 votes
5 answers
157 views
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 ...
- 144
4 votes
4 answers
441 views
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 ...
1 vote
2 answers
115 views
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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