Technically speaking, since the all wise Rich Nute has provided us with a
history of the on and off mains power switch markings, I was wondering
if anyone knows the history behind DC Insulation Resistance Testing and why
it continues to be performed in Europe and Asia when a Dielectric Withstand
Hello again.
The following is food for thought that came to light during a recent project
development meeting. I invite your comments and anecdotes on the following.
My earlier post regarding test probe 11 of IEC 61032 was related to comparing
force test methods to deflect enclosures to reduce
Rich,
You are wise beyond your years. I love your email about the history of the 0
and 1.
We have all sat around the conference room table with the design team all
scratching our heads on what symbol(s) to use on buttons and switches and end
up using something we don't know is right or not.
Further to the interpretation of the O and
| symbols:
http://ask.metafilter.com/28272/the-circle-line
Be sure to explore the links in the page.
Note that most people have no idea what the
O and | symbols mean or even that the
symbols are from standards.
Other related articles:
Hi Other Brian:
You raise some interesting points.
With regard to IEC 5009...
You describe the function as when the switch
is operated, the standby mode is turned on.
Okay. The two positions would be:
standby on, function off
standby off, function on
I view the function
Hi Scott:
The symbols for on (1) and off (0) originated
in the days of the CEE (Europe) standards.
In those days, radios and other appliances were
built with big rotary switches, that ALSO turned
on the power. On a radio, the switch had numbered
positions which represented the receiving
My thanks to all responders. That was a great help.
Regards,
Peter L. Tarver, PE
ptar...@ieee.org
CONFIDENTIALITY
This e-mail message and any attachments thereto, is intended only for use by
the addressee(s) named herein and may contain legally privileged and/or
confidential information.
Com-power.com has the probe as well
Rigid Test Finger - RP-950
Larry Stillings
From: Tarver, Peter [mailto:peter.tar...@sanmina-sci.com]
Sent: Tuesday, July 10, 2007 11:48 AM
To: PSTC 1
Subject: test probe 11 of IEC 61032
Good day.
What does test probe 11 of IEC 61032 look like?
Regards,
Peter,
It is Model UFP-01: Rigid Finger Probe on the following website;
http://www.productsafet.com/
In other words, yes it is the rigid version of Test Probe B
Regards,
Steve Richardson
Blackwood Compliance Laboratories
www.blackwood-labs.co.uk
From: emc-p...@ieee.org
From: Peter Tarver
Sent: Tuesday, July 10, 2007 8:48 AM
What does test probe 11 of IEC 61032 look like?
Is this simply the rigid version of the IEC finger probe depicted in
Figure 2A of the 60950-1 standards?
Regards,
Peter L. Tarver, PE
ptar...@ieee.org
CONFIDENTIALITY
This e-mail
It's the standard test finger but without the joints.
Nick.
At 08:47 -0700 10/7/07, Tarver, Peter wrote:
Good day.
What does test probe 11 of IEC 61032 look like?
Regards,
Peter L. Tarver, PE
ptar...@ieee.org
CONFIDENTIALITY
This e-mail message and any attachments thereto, is intended only
Good day.
What does test probe 11 of IEC 61032 look like?
Regards,
Peter L. Tarver, PE
ptar...@ieee.org
CONFIDENTIALITY
This e-mail message and any attachments thereto, is intended only for use by
the addressee(s) named herein and may contain legally privileged and/or
confidential
The standby symbol as well as several others are being used incorrectly
according to the original intent, but due to the lack of a better symbol, they
are being used to indicate a logical on/off instead of its intended
relationship with the disconnection or non-disconnection from the AC Mains.
I
I notice that “I” + “/” + “Standby symbol” is on the power button
(actually not fully power off in standby state). It appears on lots of
Japanese made products. What is the meaning in terms of technical aspects?
According to IEC 5009, it should be a “Standby Symbol” only. Your
guidance is
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