HDTenEightyP/NetNews huggingface dataset:
From: zrepachol@cc.curtin.edu.au (Paul Repacholi)
Subject: Re: Compact fluoros
Organization: Curtin University of Technology
Distribution: aus
Date: Fri, 9 Oct 1992 11:57:27 GMT

In article <1992Oct9.003158.15750@megadata.mega.oz.au>, geofft@megadata.mega.oz.au (Geoff Turner) writes:
> From article <1992Oct9.025042.1@cc.curtin.edu.au>, by zrepachol@cc.curtin.edu.au (Paul Repacholi):
...
> Just a thought: If there were a filter on the input to the lamps, there would be
> the benefits of less power-line interference generated, lower peak current (with
> a "nicer", more sinusoidal waveform) and (I think) an improved effective power
> factor.
> 

Yep, but its not cheap or *SMALL*. The filter is bigger than the rest of the
ballast. Some of the latest power suplies do do this, but these are shoe-box
sized units of a couple of KW.

Actualy there is one other nasty. If a half wave rectifier is used, all the
power is drawn one the +ve or -ve half cycle. Not a problem with BC bases as
1/2 will be put in one way, 1/2 the other. But with a screw base, they ALL
go the one way, hence ALL draw power on the one 1/2 cycle and present a DC
load to the grid.

~Paul

Newsgroups: aus.conserve
From: geofft@megadata.mega.oz.au (Geoff Turner)
Subject: Re: Compact fluoros
Originator: geofft@moses
Organization: Megadata P/L, North Ryde, Sydney, Aust.
Distribution: aus
Date: Fri, 9 Oct 1992 00:31:58 GMT

From article <1992Oct9.025042.1@cc.curtin.edu.au>, by zrepachol@cc.curtin.edu.au (Paul Repacholi):
> The main problem with 'compact flouros' is a high crest factor. I put CF in
> quotes because most people mean Phillips PLC-E or equivalent. CF refers to
> the tube design and base. The balast can be inductive, capacitive, electronic,
> and may also be intergrated into the unit.
> 
> Back to the crest factor... The PLC-E and friends use a switch-mode power
> controler to feed the tube. At the mains side of these electronics is a diode
> rectifier and a storage capacitor. Current only flows when the instantainious
> voltage from the mains is greater than the cap voltage. When this condition is
> met, current flows into the cap, recharging it to peak voltage. When the voltage
> drops from peak, the diode shuts off and the current stops. Hence the 20W tube
> actualy draws ~100-150W peak, 50 time per second. IE, the current is a series
> of spikes, rather than a steady sinewave.
> 
Thanks for the info - this explains why the Philips lamps have out-of-phase
components of current. (Charging of the cap. only occurs on the rising
rectified voltage, near the crest.) Also, delivering all the power in short
bursts requires higher instantaneous current than you would get if the same power
were delivered by a "clean" sine wave current. So, i-squared-R losses are
more significant than they would be otherwise.

Just a thought: If there were a filter on the input to the lamps, there would be
the benefits of less power-line interference generated, lower peak current (with
a "nicer", more sinusoidal waveform) and (I think) an improved effective power
factor.


Geoff Turner (geofft@megadata.mega.oz.au)                    |    ...  __o
                                                             |  ...   -\<, 
                                                             |  ....(_)/(_)..
Newsgroups: aus.conserve
From: geofft@megadata.mega.oz.au (Geoff Turner)
Subject: Re: Compact fluoros
Originator: geofft@moses
Organization: Megadata P/L, North Ryde, Sydney, Aust.
Distribution: aus
Date: Sun, 11 Oct 1992 23:27:50 GMT

From article <1992Oct9.092705.9387@tplrd.tpl.oz.au>, by grantpa@tplrd.tpl.oz.au (the old man in black):
> .....
>
> If you go to all the trouble of filtering the input to a switch mode supply to
> make the input current waveform closer to a sinewave (nicer for the power
> provider and other users on the grid, you might as well fix up the power-factor
> of the PLC by adding reactive elements.

If the case of some makes of compact fluoros, the current waveform and power factor
problems are related. The Oz designs apparently do take care of the power factor
problem (I believe they claim theirs is close to unity). For low power devices
like these, it's not too difficult to make a big improvement.

But maybe this is why the Oz designs only come in the large size!


From article <1992Oct9.205727.1@cc.curtin.edu.au>, by zrepachol@cc.curtin.edu.au (Paul Repacholi):
> In article <1992Oct9.003158.15750@megadata.mega.oz.au>, geofft@megadata.mega.oz.au (Geoff Turner) writes:
>> From article <1992Oct9.025042.1@cc.curtin.edu.au>, by zrepachol@cc.curtin.edu.au (Paul Repacholi):
> ....
>> Just a thought: If there were a filter on the input to the lamps, there would be
>> the benefits of less power-line interference generated, lower peak current (with
>> a "nicer", more sinusoidal waveform) and (I think) an improved effective power
>> factor.
>> 
> 
> Yep, but its not cheap or *SMALL*. The filter is bigger than the rest of the
> ballast. Some of the latest power suplies do do this, but these are shoe-box
> sized units of a couple of KW.
> 
See comment above. Compact fluoros don't draw a couple of kW.

> Actualy there is one other nasty. If a half wave rectifier is used, all the
> power is drawn one the +ve or -ve half cycle. Not a problem with BC bases as
> 1/2 will be put in one way, 1/2 the other. But with a screw base, they ALL
> go the one way, hence ALL draw power on the one 1/2 cycle and present a DC
> load to the grid.
> 
Why would anyone want to design a switch-mode regulator with only half-wave
rectification? Even in a compace fluoro, size is not an issue to that extent.


Geoff Turner (geofft@megadata.mega.oz.au)                    |    ...  __o
                                                             |  ...   -\<, 
                                                             |  ....(_)/(_)..
From: mrp@itd.adelaide.edu.au (Mark Prior)
Newsgroups: aus.net.directory
Subject: Welcome: Ballarat University College
Date: 8 Oct 92 02:50:11 GMT
Organization: The University of Adelaide
NNTP-Posting-Host: huon.itd.adelaide.edu.au

Another site has joined the AARNet Directory Pilot.

Site:           Ballarat University College
DSA:            c=AU@o=DMD@cn=Possum
Contact:        Gary Walker <gjw@buc.edu.au>
From: sri@qsun.att.com
Newsgroups: aus.net.directory.osi-ds
Subject: Request for Suggestions
Date: 13 Oct 92 17:10:02 GMT
Organization: The University of Adelaide
NNTP-Posting-Host: huon.itd.adelaide.edu.au

As members of the Directory Information Services Infrastructure (DISI)
working group, we are about ready to send out a survey to update the
Informational RFC:  RFC1292 - "A Catalog of Available X.500
Implementations".

If you have comments on the form and content of RFC1292 please send
them to us by Wednesday 10/21/92. We will try to incorporate as many of
your comments as possible in the new survey form.  Please send your
comments to either of the undersigned.

We apologize for the duplicates received by those of you who are on
some or all of the mailing list recipients of this message.

Thanks in advance for your comments.

Regards,

Arlene Getchell  (getchell@es.net)
Sri Sataluri     (sri@qsun.att.com)
From: tebbutt@rhino.ncsl.nist.gov (John Tebbutt)
Newsgroups: aus.net.directory.osi-ds
Subject: Re: Directory Services Activities Report - 10/92
Date: 13 Oct 92 17:10:23 GMT
Organization: National Institute of Standards and Technology (NIST)
NNTP-Posting-Host: huon.itd.adelaide.edu.au


Steve Hardcastle wrote:

> Reporting on the NIST implementation, with statistics of just under two
> operations per day, and claiming this as a pilot, confirms all of the
> worst suspicions on those who ridicule X.500. 

Might I venture to suggest that the stats included with the NIST segment,
while rather low key :-), can at worst only serve to emphasize the impression
of apathy conveyed by the whole DSAR report. Over the last few months, NIST
has been the only consistent contributor to the report, and on at least two
occasions the *only* contributor. The fact that no-one else is contributing
to the report can indicate one of two things: either there is no interest in 
X.500, in which case the NIST stats are representative of a general trend; or
there is no interest in the DSAR itself, in which case the stats are not likely 
to receive wide attention, so why make such a fuss?

The stats are included FYI, and represent the true state of affairs. Our pilot 
is clearly on the back burner at the moment. However, judging by the rest of 
the DSAR report, a lot more is happening here than elsewhere!   

The NIST stats might be a little less conspicuous if they were comfortably 
nestled among their contemporaries. Steve, I look forward to seeing your report
for October this time next month!

JT
From: S.Kille@isode.com (Steve Hardcastle-Kille)
Newsgroups: aus.net.directory.osi-ds
Subject: Re: Directory Services Activities Report - 10/92
Date: 13 Oct 92 07:31:50 GMT
Organization: The University of Adelaide
NNTP-Posting-Host: huon.itd.adelaide.edu.au

As you say, absolutely meaningless.   Remeber, that this arose from my comments
about the image created by a DSA doing 1.7 queries per day.   

Steve
From: S.Kille@isode.com (Steve Hardcastle-Kille)
Newsgroups: aus.net.directory.osi-ds
Subject: Re: Restaurant OIDs
Date: 10 Oct 92 10:04:27 GMT
Organization: The University of Adelaide
NNTP-Posting-Host: huon.itd.adelaide.edu.au

I'd like to get the Restaurant schema onto the Washington IETF Agenda.
Perhaps we should get the DIT populated for info around IETF locations??
 
Alain - would you write your message up into Internet Draft format?

Steve
From: spanier@mailserv.zdv.uni-tuebingen.de (K. Spanier)
Newsgroups: aus.net.directory.osi-ds
Subject: Re: Directory Services Activities Report - 10/92
Date: 13 Oct 92 07:31:51 GMT
Organization: The University of Adelaide
NNTP-Posting-Host: huon.itd.adelaide.edu.au

> I think that 500 operations per day is quite respectable.   This is clearly
> real use for white pages type services.   The levels seem to jump 
> dramatically either due to mail system integration or due to provision
> of an easily accessible front end (e.g., Gopher)
> 
> Steve
> 

Glad to hear that I am really part of the Pilot! But I think, that part of
the story is the question whether a given DSA is a BIG country level DSA
or only a small organizational level DSA. In other words: how distributed
is the Distributed International X.500-Directory, and is it meaningfull to
compare DSA statistics without information about the range of organi-
zations these DSAs serve...

Kurt


X.500: Kurt Spanier, Zentrum fuer Datenverarbeitung,
       Uni-Tuebingen, DE
From: S.Kille@isode.com (Steve Hardcastle-Kille)
Newsgroups: aus.net.directory.osi-ds
Subject: Re: Directory Services Activities Report - 10/92
Date: 13 Oct 92 07:31:51 GMT
Organization: The University of Adelaide
NNTP-Posting-Host: huon.itd.adelaide.edu.au

I think that 500 operations per day is quite respectable.   This is clearly
real use for white pages type services.   The levels seem to jump 
dramatically either due to mail system integration or due to provision
of an easily accessible front end (e.g., Gopher)

Steve
From: mrp@itd.adelaide.edu.au (Mark Prior)
Newsgroups: aus.net.directory
Subject: New Internet draft that could be of interest
Date: 9 Oct 92 00:25:18 GMT
Organization: The University of Adelaide
NNTP-Posting-Host: huon.itd.adelaide.edu.au


------- Forwarded Message

From: Internet-Drafts@NRI.Reston.VA.US
Reply-To: Internet-Drafts@NRI.Reston.VA.US
Subject: ID ACTION:draft-ietf-disi-x500-survey-00.txt
Date: Thu, 08 Oct 92 13:38:31 -0400


A New Internet Draft is available from the on-line Internet-Drafts
directories. This draft is a work item of the Directory Information
Services Infrastructure Working Group of the IETF.


       Title     : A Survey of Advanced Usages of X.500
       Author(s) : Chris Weider, Russ Wright, Elizabeth Feinler
       Filename  : draft-ietf-disi-x500-survey-00.txt
       Pages     : 13

This document is the result of a survey asking people to detail their
advanced usages of X.500. It is intended to show how various
organizations are using X.500 in ways which extend the view of X.500
as a 'White Pages' service.

Internet-Drafts are available by anonymous FTP.  Login with the
username "anonymous" and password "guest".  After logging in,
Type "cd internet-drafts".
     "get draft-ietf-disi-x500-survey-00.txt".

Internet-Drafts directories are located at:

     o  East Coast (US)
        Address:  nnsc.nsf.net (128.89.1.178)

     o  West Coast (US)
        Address:  ftp.nisc.sri.com (192.33.33.22)

     o  Pacific Rim
        Address:  munnari.oz.au (128.250.1.21)

     o  Europe
        Address:  nic.nordu.net (192.36.148.17)

Internet-Drafts are also available by mail.

Send a message to:  mail-server@nisc.sri.com. In the body type:
     "SEND draft-ietf-disi-x500-survey-00.txt".

For questions, please mail to internet-drafts@nri.reston.va.us.

------- End of Forwarded Message
Newsgroups: aus.net.directory,aus.aarnet
From: ins894r@aurora.cc.monash.edu.au (Aaron Wigley [Wigs])
Subject: Network Maps required
Organization: Monash University
X-Newsreader: TIN [version 1.1 PL6]
Date: Fri, 9 Oct 1992 12:07:38 GMT

I am looking for AARNet maps (Postscript), of any sort. I have the 
aarnet-backbone.ps map, but I was wondering if more detailed maps
are available, for example on a state by state basis, or even smaller
regions.

Thanks for any directions,

The Wigs of Oz,
Aaron Wigley
ins894r@aurora.cc.monash.du.au
From: rxtajp@minyos.xx.rmit.oz.au (Andrew Pettifer)
Newsgroups: aus.aviation
Subject: Avalon airshow
Date: 8 Oct 92 00:28:27 GMT
Distribution: aus
Organization: RMIT Computer Centre
NNTP-Posting-Host: minyos.xx.rmit.oz.au

I'm planning on taking a handheld scanner with me to the airshow, can anyone
tell me what frequencies i should be listening too?

I'm sure that other people would like to hear this too.
From: nics@ee.uts.edu.au (Nick Snoek)
Newsgroups: aus.aviation
Subject: Formation over Sydney CBD
Date: 15 Oct 92 00:51:54 GMT
Distribution: aus
Organization: University of Technology, Sydney
NNTP-Posting-Host: harpo.ee.uts.edu.au

A formation of three light A/C (unknown type - single engine, fixed
undercarriage) flew over the Sydney CBD this morning. Their altitude
was quite low, not higher than 500'. They passed the UTS tower
building quite closely, probably below building level, approaching 
from the North West. They then made a slow sweeping turn around the
city (they had to go 'around the city' as they were considerably
lower than the tops of the higher buildings).

Has anyone got any more info on this ?

Nick - nics@ee.uts.edu.au
From: bevans@jabaru.cec.edu.au (Brian Evans)
Newsgroups: aus.aviation
Subject: Re: Avalon airshow
Date: 8 Oct 92 05:49:29 GMT
Distribution: aus
Organization: Jabaru Timesharing, Melbourne Australia

rxtajp@minyos.xx.rmit.oz.au (Andrew Pettifer) writes:

>I'm planning on taking a handheld scanner with me to the airshow, can anyone
>tell me what frequencies i should be listening too?

>I'm sure that other people would like to hear this too.

We sure would.

Brian
Newsgroups: aus.aviation
From: ins854a@aurora.cc.monash.edu.au (D Sketchley (Kidon))
Subject: Re: Avalon airshow
Organization: Monash University
X-Newsreader: TIN [version 1.1 PL6]
Distribution: aus
Date: Fri, 16 Oct 1992 07:15:20 GMT

Brian Evans (bevans@jabaru.cec.edu.au) wrote:
: rxtajp@minyos.xx.rmit.oz.au (Andrew Pettifer) writes:
: 
: >I'm planning on taking a handheld scanner with me to the airshow, can anyone
: >tell me what frequencies i should be listening too?
: 
: >I'm sure that other people would like to hear this too.
: 
: We sure would.
: 
: Brian

-----------------------
The following is a post from a while ago.  You might find it helpful. :-)

					Kidon. ins854a@aurora.cc.monash.edu.au


From monu6!bruce.cs.monash.edu.au!munnari.oz.au!metro!usage!Jon.Biddell Tue May 19 16:36:14 1992
Newsgroups: aus.aviation
From: robert@smaug.cm.deakin.OZ.AU (Robert Ruge)
Newsgroups: aus.aviation
Subject: Re: Avalon Airshow
Date: 7 Oct 1992 22:53:12 GMT
Organization: Department of Comp/Maths - Deakin University
Distribution: world
NNTP-Posting-Host: smaug.cm.deakin.oz.au
Keywords: Airshow

In article <1992Oct7.033543.14072@labtam.labtam.oz.au>, michael@labtam.labtam.oz.au (Michael Podhorodecki) writes:
|> From article <s894214.718335308@minyos.xx.rmit.OZ.AU>, by s894214@minyos.xx.rmit.oz.au (Gareth John Coco):
|> > Well it's nearly time for the Avalon airshow to begin.
|> 
|> When is it on and where does one find out details?
|> -- 
|> Michael Podhorodecki                                michael@labtam.oz.au
|> Labtam Australia Pty. Ltd.                          Phone: +61-3-587-1444

There are trade days from (I think) Wed 21-Oct to Fri 23-Oct and then
public days on the 24th and 25th. Tickets and information can be bought
from your local RACV office.

-- 
Robert Ruge				ACSNET: robert@cm.deakin.oz.au
Department of Computing & Mathematics	PHONE:  +61 52 271319
Deakin University
Victoria, 3217
Newsgroups: aus.aviation
From: bevans@jabaru.cec.edu.au (Brian Evans)
Subject: Re: Avalon Airshow
Organization: Jabaru Timesharing, Melbourne Australia
Date: Wed, 07 Oct 92 05:00:40 GMT
Keywords: Airshow

s894214@minyos.xx.rmit.oz.au (Gareth John Coco) writes:

>Well it's nearly time for the Avalon airshow to begin.
>Who is going to go? and does anybody know which aircraft
>are coming from the different airforces around the world.

The Melbourne SUN had an article or an add containing a list of some
of the aircraft coming. 

Some of the aircraft listed from memory were:

C5 galaxy, B52, Mustangs, Spitfire, Mosquito, sabre jets, a mig
somebody mentioned a lancaster bomber (can anyone verify this?), 
various jet fighters.

The paper also mentioned that 1000 aircraft are going to be on display.

I think that show will be a real winner.

Brian
From: unimelb@peg.pegasus.oz.au
Newsgroups: aus.aviation
Subject: Re: Avalon Airshow
Date: 12 Oct 92 20:04:00 GMT
Nf-ID: #R:s894214.718335308@minyos.xx.rmit:1079798357:peg:511500005:000:340
Nf-From: peg.UUCP!unimelb    Oct 12 15:04:00 1992


Avalon frequencies are: Eastern Approach: Tower 125.4 Ground 119.7
Western Approach : Tower 120.1  Ground 129.3
ATIS 123.5
Helicopters124.8 for departures (information from AIP Suuplement
H32/92) I don't know if there is a special air-to-air for display
aircraft.  Stuart Hawkins DH82A VH-HSH due at the A.A.A.A. display
on Friday morning.
From: u2096565@ucsvc.ucs.unimelb.edu.au
Newsgroups: aus.aviation
Subject: Avalon Airshow
Date: 8 Oct 92 00:19:49 GMT
Organization: The University of Melbourne

AirShows Downunder are running the Australian International Air Show and
Aerospace Expo at ASTA Avalon Airport between Melbourne and Geelong from
October 21-25th. The 21st, 22nd and 23rd are trade days. Information is
available from the organisers at 85 Victoria Road, Parramatta 2150 (tel. 02 630
2000 or Fax 02 630 4764).
There are regular features appearing in the Melbourne press, with
advertisements about transport to and from the field.
I hope to fly my Tiger Moth VH-HSH in on Friday morning - the catch is that
they only accept aircraft fitted with radio, so we non-radio types have to
foregather at Bacchus Marsh and come in a gaggle with a radio plane.
The Antique Aeroplane Association of Australia will be there with their mobile
club room - THE BUS - and many members' planes we hope.
So apart from the heavy metal warbirds, jets and commuters there should be some
interesting 'rag and tube' on display. Dick Hourigan will have his Boomerang
re-build project there in the form of a naked fuselage and cockpit.
The Sports Aircraft Association of Australia also will be well represented with
home-builts, etc.
Should be a great show - providing Melbourne wakes up to the fact it is now
spring.

Stuart_Hawkins.AGFOR@muwayf.unimelb.edu.au    DH82A VH-HSH
Newsgroups: aus.photo
From: tonyj@tplrd.tpl.oz.au (Tony Jeffreys)
Subject: Sony Handicam remote (LANC) specification
Originator: tonyj@sydrd15
Organization: Telectronics Pacing Systems
Distribution: aus
Date: Wed, 14 Oct 92 22:26:13 GMT


Does anyone know the specification (i.e. electrical characteristics,
protocol etc) of Sony's LANC (Local Applications Control Bus System,
or "Remote" control) which is used in many of their Handicam video cameras?



-- 
Tony Jeffreys, Systems Design Engineer  _______T_e_l_e_c_t_r_o_n_i_c_s__|/\  __
     Telectronics Pacing Systems                        Pacing Systems     \/
     7 Sirius Rd, Lane Cove, NSW 2066, Australia
     Tel: (02) 413 6888  Fax: (02) 413 6868  Email: tonyj@tplrd.tpl.oz.au
Newsgroups: aus.photo
From: 10619518@eng2.eng.monash.edu.au (DAVID MARTIN)
Subject: nikon fg20 camera
Keywords: camera
Organization: Faculty of Engineering, Monash University 
Distribution: aus.forsale
Date: Fri, 9 Oct 1992 02:33:50 GMT

Nikon fg20 camera, tokina 70-210 zoom lens f1:4-5.6
ex cond. $200  Phone (03) 546 7769 ask for Glenn

Newsgroups: aus.general
From: pol253b@monu1.cc.monash.edu.au (Ms D Alexander)
Subject: Re: New Victorian Premier puts foot in mouth
Keywords: Jeff Kennett, Victorian Elections, Victory Speech
Organization: Monash University, Australia.
Date: Thu, 8 Oct 1992 02:52:41 GMT

Hi Andrew,
>
>Now, for those of you who do not know, Jeff has a "bit" of a reputation for
>putting his foot in his mouth. 
>
>Tonight was no exception! I guess it was just a slip of the tongue (I sincerely
>hope it was not a Freudian slip), but instead of saying:
>
>"the vast majority of Victorians....."
>
>it came out as (wait for it!!!):
>
>"the vast majority of VICTIMS......"

I hate to be the bearer of bad news, but I am of the view that your 
suspicion as to the real nature of the slip might well be true.  I only
hope that in time my fears are proven groundless.
>
>I could not bear to watch any more. I'm not at all reassured by the old saying-
>"You get the government you deserve!"
>
Nor am I... <cringe>...

Dey

-------------------------------------------------------------------------
| Dey Alexander                   | EUPHORIA BBS (+61-3-569-1572)      | 
| pol253b@monu1.cc.monash.edu.au  | Melbourne's BEST message board!!!  | 
| ayla@yoyo.cc.monash.edu.au      | FidoNet 3:632/352                  | 
-------------------------------------------------------------------------


Newsgroups: aus.general
From: rshelswe@socs.uts.edu.au (Ryan's Full Name)
Subject: Re: Virtual Reality games in Australia
Keywords: virtual-reality, video-games
Reply-To: rshelswe@socs.uts.edu.au
Organization: University of Technology, Sydney
Distribution: aus
Date: 11 Oct 92 01:22:00 GMT

alan@sorokin.anu.edu.au (Alan To) writes:


 >Does anyone know of any places in Australia (Sydney, Canberra or Melbourne
 >really) where you can play games of virtual reality with eyephones etc.
 >
 >I have seen one mentioned on the news and on 'Beyond 2000' some time ago
 >that was in Sydney, but they never mentioned exactly where it was.
 >
 >

Twice now the PowerHouse Museum has had Virtual Reality systems 
on display for a few days, the current one ends today (11th Oct).

Unfortunately, they are difficult to get on, because they are run
in school holidays and use a ballot system - you might get on
quick, or not at all.

	- rshelswe@socs.uts.edu.au

--
   "Rely on nothing under    -  rshelswe@socs.uts.edu.au       -
    heaven.  Rely only       |  Ryan Shelswell, UTS,           |
    on the Self."            -  Sydney, Australia.             -
Xref: sparky aus.general:1809 aus.aarnet:956