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

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177 views

What are the differences between Channel-to-Ground & Channel-to-Channel isolation?

I have the following questions regarding different types of isolation techniques: What are the major differences between Channel-to-Ground & Channel-to-Channel isolation techniques? Are all ...
2
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166 views

Isolation between cells for battery charging & testing

I want to charge Lipo battery packs and possibly other chemistries too. Six cell packs for starters. But hope to handle more and less. Perhaps a lot more cells. For electric vehicles, skateboards, ...
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13 views

ACPL-C79B problem

This is my first post on this forum. I have a problem with an isolation amplifier and i hope there's someone here who can help me out. Let me explain my situation. I use an ACPL-C79B from Avago to ...
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36 views

Requirements on dielectric strength and isolation between the conductors in an Ethernet transmission line with PoE

I am trying to find out what the requirements are on dielectric strength and isolation between the conductors in a Gigabit Ethernet transmission line. A first place to look would of course be the ...
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94 views

PCB isolation strength VS pad-to-pad distance

Is there any estimation regarding the relation between PCB pad to pad distance and isolation strength? If the board is covered with the mask and the minimum distance is 2,9 mm which isolation voltage ...
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50 views

Isolated CAN and Onewire

I have a bord where HV is present and one where only LV is presented. On each board is an Onewire und a CAN bus. How can I isolate the buses? I found for CAN this: ...
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833 views

Can You Drive Back-To-Back MOSFETs (aka a Solid State Relay) Without Using An Optocoupler?

I was wondering if there was any way of driving back-to-back MOSFETs (with their sources and gates tied together as shown in the following image) without using an optocoupler? The reason is that ...
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7 views

Multi channel isolated barrier: how to tell if inputs are isolated from each other?

I've been trying to figure out if in multi-channel isolated barriers the inputs are isolated from each other. For instance consider the following 2 channel isolated loop repeater: ...
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13 views

Connection between MDB Peripheral and Arduino

I'm working on making a custom vending machine controller using an Arduino as the master. The bill acceptor I'm using implements the MDB communication protocal, which is (I think) a variant of RS-485. ...
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34 views

How to safely connect valve apparatus to a PC?

I'm setting out to build the circuit below. It's part of a true random number generator, outputting a random analogue signal generated by a neon bulb. You can see that it runs on 200 VDC. Since it ...
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84 views

Using optocoupler on data pin to control 64 WS2812B leds by Arduino

I have 8x8 RGB WS2812B LED matrix and I need to isolate Ardunio (connected to the PC USB) from LED side of the circuit - 5V, up to 5A power supply. I heard that optocouplers are good for separating ...
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132 views

SPI Communication fails with ISO7241C but works with ISO7641FC, same circuit?

Objective: To interface DAC161S997, with Microcontroller C8051F350 through ISO7641FC using SPI Protocol, Which works fine and DAC output is achievable. Now here is the problem, I have changed ...
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41 views

dc power isolation techniques

I need a circuit or a technique for DC power isolation. What i want to do is below; How can i do DC isolation between power and load? Can anyone suggest me several methods?