Unsure where to connect antistatic wrist strap

Thread Starter

PJB

Joined Oct 24, 2019
26
Hello,

Where do I connect my anti-static wrist band to when I'm building a circuit on my breadboard ?

Thanks

PJ
 

dl324

Joined Mar 30, 2015
14,305
Where do I connect my anti-static wrist band to when I'm building a circuit on my breadboard ?
Any convenient ground. I was recently working with some EPROMs and I was using a 5V regulator as my "grounding" point because it was easier to attach the clip to.
 

Thread Starter

PJB

Joined Oct 24, 2019
26
When you say convenient ground does this mean -when I'm using a battery - that I can connect the strap to zero volts ? And where do I connect it when I'm using a PSU with a constant voltage of 9 volts ?
 

dl324

Joined Mar 30, 2015
14,305
When you say convenient ground does this mean -when I'm using a battery - that I can connect the strap to zero volts ?
In that case, you should connect the strap to earth ground.
And where do I connect it when I'm using a PSU with a constant voltage of 9 volts ?
Ground would be the typical place.

What you're trying to do is to prevent large static voltage discharges from damaging sensitive components. You can do that with ESD straps or ESD finger cots or ESD tweezers/tools or simply grounding yourself before touching components.

Before I got my strap out, I was touching the 5V regulator tab with a finger while I was handling the EPROMs.
 

crutschow

Joined Mar 14, 2008
29,466
If concerned about ESC, you should be working on an anti-static mat and connect the wrist-strap to that before you do anything.
That mat should be connected to earth-ground, such as the AC safety ground (not neutral) 3rd prong connection.
This can be done using an AC plug with the wire connected only to the ground terminal.
 

MrChips

Joined Oct 2, 2009
25,919
It depends on your location and when your house was built.
If there is a metal cold water pipe, you can put a clamp around the pipe.

So ideally, you go from your wrist band to the mat, to the workbench, to the cold water pipe. Or you could mount a banana post on the workbench and plug the wrist band on to the post.
 
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