Colin,

Several things in your description do not add up. The whole point of
an isolation transformer is to prevent electric shock by isolating the
circuit from ground so that TWO points of the circuit would have to
touch a person to cause current to flow.

Moreover, the wrist and heel straps should contain 1Meg resistors to
ground. They should NOT be a hard connection to ground.

Sean


On Sun, Mar 15, 2009 at 7:33 PM, cdb <colin@btech-online.co.uk> wrote:
>
>
> :: So you have two different
> :: type of workbench, one for dealing with PIC/other ESR sensitive
> :: components,
> :: and another one for working on PSU for example?
>
> For myself no, but I used to work for a company that makes medical
> devices and ALL equipment in the tech lab was powered via isolation
> transformers. =A0With an earthed wrist and heel strap (they couldn't get
> their heads around antistatic coats and shoes), occasionally touching
> a powered part would give a nice sharp nip. Still it was fun watching
> a heart pump speed up to 6500 rpm when this happened.
>
> Colin
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> cdb, colin@btech-online.co.uk on 16/03/2009
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