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*Your* health and safety while working on electrical devices, and designing devices that will not shock, set fire to, or otherwise harm the user of the device.

1 vote
2 answers
176 views

Can galvanic isolation be performed at the user interface (UI)?

With capacitive touch sensing and transparent materials, it seems like it would be possible to run small digital devices from A/C mains without a transformer isolated supply. Is there a flaw in th …
Burt_Harris's user avatar
2 votes
1 answer
68 views

Running digital ground at AC line potential (not neutral)

I've run across an interesting WiFi dimmer module known as a Shelly dimmer. This bright green module is designed to be used inside an electrical box. Most of it's user interface is over line-voltag …
Burt_Harris's user avatar
0 votes

In 2020, what are the most common approaches to power-line-communications for hobbyists? (up...

One of the most interesting looking modern technology for the PLC space is one called PRIME (PLC). Primary use for PRIME seems to be in Advanced Metering Infrastructure (AMI), but the snippets I've f …
Burt_Harris's user avatar
4 votes
2 answers
304 views

In 2020, what are the most common approaches to power-line-communications for hobbyists? (up...

I'm looking for modern control protocols, designs and/or components to simplify controlling (and running) a very low power system on a chip safely from mains power. I'm in the USA, and on a hobby bud …
Burt_Harris's user avatar