21 Jan
2009
21 Jan
'09
9:36 a.m.
On Wed, 2009-01-21 at 11:43 -0500, Paul Koning wrote:
On all three (okay, a small sample set) of the Thinkpad PSUs I've opened
up, the earth pin isn't connected, or is connected to a pad on the board
and nothing else.
Gordon
>>>> "Gordon" == Gordon JC Pearce MM3YEQ <gordonjcp at
gjcp.net> writes:
Gordon> On Wed, 2009-01-21 at 06:37 -0500, Roy J. Tellason wrote:
> Of the two laptops here, I have one of each
of those, this Sony
> having the two-pin variant and the Dell I was using before that
> having the three-pin variant. At one point I had the Dell with me
> but not the cord (and the battery on that one is unusable) and I
> had no difficulty in finding one to use.
Gordon> "Figure 8" leads will fit "cloverleaf" sockets anyway, at
a
Gordon> pinch. Since the PSU is double-insulated it makes no
Gordon> difference whether the earth is connected.
Odd. The usual assumption is that the presence of an earth wire means
grounding is required, and using the device without one is a violation
of safety regulations. Then again, it's certainly possible that it
merely violates regulations, not reality.