• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Warnings, disclaimers and liability with high voltage projects

WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
Building, troubleshooting and testing of these amplifiers should only be
performed by someone who is thoroughly familiar with
the safety precautions around high voltages.
What happens after the troubleshooting and testing is completed? It is likely that such a DIY build will be accessible to someone who is not familiar or qualitied or trained with electronics or high voltage. What about liability if something goes wrong if the thing is put in operation or used by such a person?
 
This is great for the DIY audience, but is it enough if one publishes plans , kits, built or modified units for sale?
I guess the diyAudio warning is ok for stuff happening here in the forums. Not sure for plans/kits that are not part of the diyAudio forums. In Europe, fully built devices must conform to the CE safety standards, and some stuff must have a CE label attached if they are sold or otherwise brought out to the market (this certaily applies to devices that plug in directly to a wall outlet). I am sure the same/similar applies in most other regions of the worlds.
 
Not sure for plans/kits that are not part of the diyAudio forums.
Not sure about the times, either. Thinking when a small company like "Heathkit" was active, versus today when one good lawsuit could vanquish them easily. People of today can be real "Karens" about things like diagram 365a didnt explicitly show the internal tooth lockwasher between the metal standoff tab and the chassis, when the truth is more like they didnt tighten the screw.

Hard to imagine a society devolving into a place where it's hard to learn about this stuff, because no one dares to make anything you can learn from, because it's too risky legally to suggest doing such a thing in a public place. Unsure why that hasnt applied itself to the idea of woodburning with a salvaged microwave transformer...
 
This is great for the DIY audience, but is it enough if one publishes plans , kits, built or modified units for sale?
The sad truth of the world today is, if you want to build and sell something, you'd better invest a few hundred bucks upfront and talk to an Attorney who is familiar with commercial sales and liability law. There is no way that copying someone else's liability statement (or writing your own) is ever going to protect you.

That, or sell stuff out of the back of your truck and change corners often. 😉
 
This is the one I wrote up: Comments welcome.

Code:
Safety warning: 

This circuit uses voltages up to 300V and can cause death or serious injury.
Capacitors on this board might retain their charge with the power disconnected.

Always treat this and any other project using high voltage electricity
with respect and the utmost care
– failure to do so may result in your *death* –
You have been warned.
Koda
 
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