choosing a bleed resistor

[driftspin]

Hi Bert

Do you think it's not worth bothering with the bleed resistor ?
cheers

Andrew

Eh... well when nothing is connected it takes forever and a day to get rid of the lethal voltage levels...

So.. you can check voltage level vs time after switching off.

I would say 10 seconds to 10 ish volts is fine...

If it takes more time then what you are comfortable with put a resistor in.

50VAC 50hz / 120VDC was once considered the critical level for safety under normal conditions.

I would say all the metal near raises risks a bit.


So... then the energies stored in the caps is the next thing to worry about.

Caps discharge at high amp rate on shortcircuit... like a welding torch...


So big caps are always dangerous.

The above is just my opinion.
More safe is always better.

So never work on live systems, always check your measuring device for good to go before use.
Then check for 0 voltage and then check your measuring device is still in good working order after that.

https://youtu.be/EoWMF3VkI6U

This guy explains it well

https://youtu.be/sI5Ftm1-jik


He is more fun though


Grtz Bert


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