Searching \ for '[EE]: Round control ?' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/index.htm?key=round+control
Search entire site for: 'Round control ?'.

Exact match. Not showing close matches.
PICList Thread
'[EE]: Round control ?'
2001\04\24@063124 by dr. Imre Bartfai

flavicon
face
Dear PICsters,

I badly need an english term for the following (in German: Tonfrequenz-Rundsteuerung, in Hungarian: hangfrekvenciás kôrvezérlés):
there is a low frequency sender (an inverter) in the power plant and the
output is supplied in the power line, modulated in a specific manner. The
customers have a receiver in their household in the switching cabinet, and
appropriate telegrams allow/disallow to turn on particular high-power
customer devices (such as high-capacity water boilers, electric ovens with
heat storage etc.). The customer has the disadvantage he can not control
over the possibility to turn on the device, but because of the advantage
for the power seller (he can damp the peaks and the valleys of the daily
load) this kind of power has a reduced price. In the contract it is
guaranteed the customer is able to turn on his devices at least 33 pct in
a daily average. Thus, I need the term for this type of control.

Thank you in advance.
Regards,
Imre

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.


2001\04\24@064335 by Alan B. Pearce

face picon face
>I badly need an english term for the following
>(in German: Tonfrequenz-Rundsteuerung,
>in Hungarian: hangfrekvencias ktrvezirlis):

This is what is sometimes called tone control, which I think you will find
is a reasonably literal translation of the German.

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.


2001\04\24@083433 by Roman Black

flavicon
face
dr. Imre Bartfai wrote:
>
> Dear PICsters,
>
> I badly need an english term for the following
> (in German: Tonfrequenz-Rundsteuerung,
> in Hungarian: hangfrekvenciás kôrvezérlés):
>
> there is a low frequency sender (an inverter) in the power plant and the
> output is supplied in the power line, modulated in a specific manner. The
> customers have a receiver in their household in the switching cabinet, and
> appropriate telegrams allow/disallow to turn on particular high-power
> customer devices (such as high-capacity water boilers, electric ovens with
> heat storage etc.). The customer has the disadvantage he can not control
> over the possibility to turn on the device, but because of the advantage
> for the power seller (he can damp the peaks and the valleys of the daily
> load) this kind of power has a reduced price. In the contract it is
> guaranteed the customer is able to turn on his devices at least 33 pct in
> a daily average. Thus, I need the term for this type of control.


Hi Imre, in Australia this service is called
"off peak" and the control signal activates at
night, mainly for hot water systems in homes.
It is very popular, as the electricity is sold
cheaper for off peak water heaters.
:o)
-Roman

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.


2001\04\24@084647 by Barry King

flavicon
face
Imre,

I believe that the common term in US English is "power-line carrier"
transmission, implying a high frequency carrier conducted on the
mains, no matter which modulation scheme is used.

Also called "ripple signalling" by some electric power folks, because
of the fact that the signal looks like high frequency ripple on the
power waveform.  I think this term is only appropriate for crude on-
off keyed carrier, used for load shedding control on some systems.
The receiver / contactor which turns the load off is called a "ripple
box" in this context.  I used to have one on my home water heater in
exchange for a slightly lower rate.  Now I've switched fuels, but I
don't think they are using ripple signalling here any more.

-Barry.
------------
Barry King
NRG Systems "Measuring the Wind's Energy"
http://www.nrgsystems.com
Check out the accumulated (PIC) wisdom of the ages at:
PIC/PICList FAQ: http://www.piclist.com/faq

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.


2001\04\24@093751 by Alan B. Pearce

face picon face
>Also called "ripple signalling" by some electric power folks, because
>of the fact that the signal looks like high frequency ripple on the
>power waveform.  I think this term is only appropriate for crude on-
>off keyed carrier, used for load shedding control on some systems.
>The receiver / contactor which turns the load off is called a "ripple
>box" in this context.  I used to have one on my home water heater in
>exchange for a slightly lower rate.  Now I've switched fuels, but I
>don't think they are using ripple signalling here any more.

That is the term I was trying to think of rather than "tone control". I
believe it is less popular these days as it is rather easy for a householder
to do things with magnets etc to hold the relay on and so get cheap power
during high load times. The mechanism could also lock up in either "power
off" or "power on" state.

There are also problems with peak currents in transformers when trying to
load shed at maximum load, causing transformer saturation problems or other
problems which cause the utilities max load on the power grid to go out of
whack. The last time I had mine updated it was changed for a relay that was
operated by a separate control wire instead of a ripple control relay - I
had no option about the power board changing it.

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.


2001\04\24@095437 by David Cary
flavicon
face
Dear Dr. Imre Bartfai,

"dr. Imre Bartfai" <spam_OUTrootTakeThisOuTspamPROF.PMMF.HU> on 2001-04-24 05:28:41 AM
> I badly need an english term for the following
> (in German: Tonfrequenz-Rundsteuerung,

Rundsteuerung is a "control circuit".
A direct translation of  "Tonfrequenz-Rundsteuerung" gives me "audio frequency
control circuit" (the signal is modulated to somewhere in the 20 Hz to 20 KHz
band). That would allow common cheap modems to be used. If the frequency is
higher than 20 KHz, maybe you have a "FM control circuit" (frequency modulated).

--
David Cary

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.


2001\04\24@120418 by uter van ooijen & floortje hanneman

picon face
> This is what is sometimes called tone control, which I think you will find
> is a reasonably literal translation of the German.

If I am correct in Holland it is (also?) used to switch the street lights.
Wouter

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.


2001\04\25@172303 by Peter L. Peres

picon face
I think that the proper english name for the signalling method is 'carrier
current signalling' but the exact name of the electricity saving scheme
would depend on the company providing the service. I do not know of a
proper coined name that appears in a dictionary for this system, it has a
different name in every case (but it does the same thing). 'Reduced
electricity tariff system with automatic remote control' would be a way
I'd phrase it I think.

Peter

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email .....listservKILLspamspam@spam@mitvma.mit.edu with SET PICList DIGEST in the body


2001\04\25@172310 by Peter L. Peres

picon face
> Tonfrequenz-Rundsteuerung

That would be one of them Simens coined names for Tonfrequenz-Fernsteuerung
;-)

'Mains carrier current broadcast remote control' would be an english
version of this if you like.

Peter

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listservspamKILLspammitvma.mit.edu with SET PICList DIGEST in the body


2001\04\25@173533 by Bob Ammerman

picon face
I would use the term 'remote demand limiting by broadcast carrier control'.

Bob Ammerman
RAm Systems
(contract development of high performance, high function, low-level
software)

{Original Message removed}

2001\04\25@205548 by Alexandre Domingos F. Souza

flavicon
face
>I badly need an english term for the following
>(in German: Tonfrequenz-Rundsteuerung,
>in Hungarian: hangfrekvenciás kôrvezérlés):

       Tonfrequenz-Rundsteuerlung seems to be something around tonal-frequency-converter, or what we call everyday as a "modem" :o)

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email .....listservKILLspamspam.....mitvma.mit.edu with SET PICList DIGEST in the body


2001\04\26@021401 by dr. Imre Bartfai

flavicon
face
Hi,

thank you for all them who tried to help me. Meanwhile, the correct answer
is found. It calls simply: "Ripple control". I did not want to believe,
but a search on the Internet convinced me. Thank you once more.

Regards,
Imre


On Wed, 25 Apr 2001, Peter L. Peres wrote:

{Quote hidden}

--
http://www.piclist.com hint: To leave the PICList
piclist-unsubscribe-requestspamspam_OUTmitvma.mit.edu


More... (looser matching)
- Last day of these posts
- In 2001 , 2002 only
- Today
- New search...