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Topic: Carrier current

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In the News (Sat 17 Aug 19)

  Metal current carrier for electrochemical cell electrodes - Patent 4476002
A metal current carrier for use in fabricating thin electrochemical cell electrodes comprising a thin metal screen having disposed on one side a thin layer of coarse metal particles which at least partially fill the multiple openings in the metal screen and which are sintered to themselves and to the metal screen.
A metal current carrier according to claim 1 in which the metal particles are of a size that is no greater than one-half the minimum spacing between the wires in the wire mesh nor less than about one-twentieth the minimum spacing between the wires in the wire mesh.
A preferred metal current carrier in accordance with the present invention comprises a thin nickel screen having disposed on one side thereof a thin layer of silver particles which at least partially fill the multiple openings in the nickel screen and which are sintered to themselves and also to the surfaces of the screen.
www.freepatentsonline.com /4476002.html   (5084 words)

  Jennings Technology - Technotes - Vacuum Relays, Vacuum Capacitors, Vacuum Interruptors, High Voltage Capacitors, Gas ...   (Site not responding. Last check: 2007-10-26)
The current rating given in the tables of our spec sheets is the maximum current the vacuum capacitor at maximum working voltage capacity can handle continuously under normal convection cooling at an ambient temperature of 25°C. Accurate measurements of RF currents and temperatures at specific frequencies and various capacity settings have been made.
Momentary currents may exceed the catalog continuous current rating by a factor of the square root of the duty cycle, provided the working voltage is not exceeded.
The average modulated carrier current is 1.225 times the unmodulated carrier current, therefore a capacitor current rating of 1.2 times the carrier current will be sufficient even though the peaks-of-modulation currents are twice the carrier current.
www.jenningstech.com /technotes/current.shtml   (464 words)

 Carrier Current
Carrier current devices suffer from a major flaw, in that they are usually stopped dead by powerline transformers.
Carrier current devices can be detected as standard wire line devices with a TDR, oscilloscope, or with a carrier current receiver (which can be purchased from ).
Carrier current devices can transmit on any frequency below 500 kHz (150-300 kHz being VERY popular) and in one of several modulation formats, while commercial receivers are generally tuned to only a small fraction of the available band and using one modulation scheme.
members.tripod.com /~seussbeta/carrier.html   (627 words)

 The p-n diode current
The minority carrier densities in the quasi-neutral regions are obtained from equations (4.4.16) and (4.4.17).
The current due to recombination in the depletion region was assumed to be constant.
Since the carrier recombination primarily occurs within the quantum well (as it should be in a good laser diode), the quasi-Fermi energy does not change in the graded regions, while the effective density of states varies as the 3/2 power of the effective mass, which varies only slowly within the graded region.
ece-www.colorado.edu /~bart/book/book/chapter4/ch4_4.htm   (5275 words)

 Carrier current - Wikipedia, the free encyclopedia
Carrier current is a method of low power AM broadcasting that is generally not licensed in the United States, but is allowed on the campus of any school, so long as the normal FCC Part 15 Rules are adhered to when measured at the edge of the campus.
Carrier current stations generally only have an effective radiated power of a few watts.
Many carrier current stations have been, and continue to be, replaced by these technologies as well.
en.wikipedia.org /wiki/Carrier_current   (435 words)

 EPA: Federal Register: Motor Carrier Identification Report
Those motor carriers with an odd-number in the next-to-last digit of their USDOT number are required to file an update in calendar year 2001, and in every odd-numbered year in the future.
Those motor carriers with an even number in the next-to-last digit of their USDOT number are required to file an update in calendar year 2002, and in every even- numbered year in the future.
Motor carriers are required to file their MCS-150 updates according to a schedule determined by the next-to-last digit (whether the update would be filed during an odd-numbered or even-numbered year) and the last digit (the filing month) of their assigned USDOT number.
www.epa.gov /fedrgstr/EPA-IMPACT/2002/March/Day-01/i4960.htm   (5921 words)

The primary winding of a current transformer is so connected that the current being measured passes through it and the secondary winding is connected to an ammeter.
Carrier terminal with it co-axial cable is matched to the impedance of the power line by an adjustable impedance matching transformer.
They direct the carrier wave over a given circuit, increase the efficiency, smoothen the frequency characteristics, minimize the interference, prevents the interruption of the communication channels when the ground switches are closed, block off the supply ilnes and allows the transmission during a nearby external fault.
members.rediff.com /powersys/comp.htm   (2467 words)

 Carrier wave - Wikipedia, the free encyclopedia
A carrier wave, or carrier is a waveform (usually sinusoidal) that is modulated (modified) to represent the information to be transmitted.
Carrier waves are used when transmitting radio signals to a radio receiver.
The carrier must be reintroduced at the receiver by a beat frequency oscillator (BFO).
en.wikipedia.org /wiki/Carrier_wave   (301 words)

 CARRIER CONSULTING - Professional Telecommunications Consulting
For example, if your current carrier gives you very good interstate rates, but most of your calling is intrastate (within your same state), you would be better off with a carrier that features very low intrastate prices.
For example, one carrier may have the lowest rates if the client commits to a term plan, but if the specific carrier has strict penalties for cancellation and does not guarantee the rates, it could be risky.
Another carrier may have slightly higher prices, but features fixed rates and does not require a term contract These types of factors are reviewed when making a carrier recommendation.
www.carrierconsulting.com /analysis.html   (442 words)

 Massachusetts Attorney General: December 11, 2003
There should be no extra charge beyond the current carrier's actual cost to transfer you to a new carrier.
You are responsible for any money you owe to your current phone company, but the FCC has said that your current phone company cannot hold your phone number and stop you from transferring it to a new phone company even if you have an outstanding balance.
Find out whether the person who signed the contract with the current carrier is the person who must sign the contract with the new carrier.
www.ago.state.ma.us /sp.cfm?pageid=1601   (745 words)

 ChoicePoint - P&C Insurance Underwriting Services/Underwriting Services   (Site not responding. Last check: 2007-10-26)
Current Carrier identifies the existence of current or previous insurance, and whether or not the applicant has had a possible lapse in coverage.
With Current Carrier, contributing insurers are able to electronically validate key pieces of underwriting information for automobile and property risks.
Current Carrier data is only accessible to participating insurance companies and complies with federal Fair Credit Reporting Act.
www.choicepoint.com /business/pc_ins/us_7.html   (127 words)

 Modulation of Single Channels Underlying Hippocampal L-Type Current Enhancement by Agonists Depends on the Permeant Ion ...
the permeant ion increased the amplitude of single-channel currents
carried by Ba ions was obviously prolonged (Fig.
Current showed the same waveform as that observed in whole cell recordings, where current activation was greatly slowed and a very slow deactivation current time course was evoked.
jn.physiology.org /cgi/content/full/92/2/824   (7621 words)

 Carrier Current according to Greg's Sandbox
I first became introduced to "carrier current" when I was in college at the University of Maryland about 1972.
In the case of carrier current radio at 650 khz, we find that a usable 15 microvolts field strength is allowed at about 250 feet from the source.
Carrier current is now used by the X-10 family of household controllers and many other devices.
www.gregssandbox.com /wocr/carrier.htm   (977 words)

 History of Radio Station WLCR-AM Carrier Current, Lewisburg/White Sulphur Springs, West Virginia and The Radio Group   (Site not responding. Last check: 2007-10-26)
WLCR-AM Carrier Current was a radio station operated at a Summer camp for boys and girls called Camp Shaw-Mi-Del-Eca located between Lewisburg and White Sulphur Springs, West Virginia.
In a Carrier Current broadcast, another form of low power broadcasting, radio signals are sent through the electrical transmission lines of a building or series of buildings on a campus.
Usually the sky conditions and the current time[the radio station's clock was corrected each day with time transmitted by the National Bureau of Standards' (now known as the National Institute of Standards and Technology) short-wave radio station, WWV] were also broadcast with the temperature; these time--temperature--sky condition reports were announced frequently on WLCR-AM Carrier Current.
johnbrashear.tripod.com /wlcr.html   (4116 words)

 Amplitude Modulation   (Site not responding. Last check: 2007-10-26)
This is because the Audio Voltage modulating the carrier doubles the RF voltage at the peak, since the load resistance is constant, the RF current doubles at the same instant as the RF voltage.
In fact, the true RMS current of an AM waveform does not change until modulation exceeds 100% in the negative direction, unless there is nonlinearity or some sort of carrier level shift action taking place.
With reverse carrier control, there will be a noise reduction effect with receivers having average-AGC (typical of older tube-type receivers), because the elevated carrier will cause their AGC to reduce gain during these quiet periods, and raise gain during periods of heavy modulation.
www.qsl.net /wa5bxo/asyam/aam3.html   (3880 words)

 Bipolar Junction Transistors
The values of the minority carrier densities at the edges of the depletion regions are indicated on the Figure 5.3.1.
The emitter current therefore equals the excess minority carrier charge present in the base region, divided by the time this charge spends in the base.
The forward- and reverse-bias transport factors are obtained by measuring the current gain in the forward active and reverse active mode of operation.
ece-www.colorado.edu /~bart/book/book/chapter5/ch5_3.htm   (1583 words)

 Current Carrier Press Release   (Site not responding. Last check: 2007-10-26)
Current Carrier and its divisions NOW Courier and Network Delivery have really done it this time… They are being recognized for their outstanding customer service by Celeste M. Warner, aka The Queen of Customer Service.
She will be presenting Bob and Chris Halkyard, of Current Carrier, her coveted award at 10:00 AM, on Tuesday, May 16th at the Current Carrier building; 255 York Avenue in Pawtucket.
Current Carrier not only provides exemplary service to their customers; but is also an outstanding supporter of the American Cancer Society throughout the year, with special service to them during their yearly daffodil day fundraiser-providing free deliveries of thousands of daffodils throughout RI.
www.takechargeofyourlife.net /currentcarpr.htm   (236 words)

 How to survive the coming cell-phone wars - MSN Money
Once you request that your number be ported to a new carrier, your current carrier must comply, even if you still have an unpaid balance or owe a termination fee.
Your old carrier is allowed to charge you a “reasonable” fee for switching, although your new carrier may pick up the tab.
Carriers differ about many aspects of their plans, including when off-peak hours start and stop, whether minutes can be rolled over to the next month, when long distance and roaming charges apply and whether incoming calls are free.
moneycentral.msn.com /content/SavingandDebt/P65569.asp   (1385 words)

 Amazon.com Message   (Site not responding. Last check: 2007-10-26)
Your current cell number must still be active with your current carrier.
If you cancel your current service before your number is transferred, your current number may be immediately assigned to someone else.
Penalties may be imposed by your carrier for early termination if you don't cancel your service within a certain number of days (the terms and conditions of your contract can be found on the detail page of each individual rate plan in the left-hand column under "Contract Terms").
www.amazon.com /exec/obidos/tg/feature/-/508597   (2027 words)

 Tennessee Regulatory Authority Local Number Portability FAQ Page
The law allows carriers to charge a fee to recover the costs associated with switching you to a new carrier and your current telephone service provider might impose a “transfer of service fee” or “switching fee” to transfer you to a new carrier.
Telephone companies are authorized, but not required, by the federal government to recover their costs associated with making LNP available, and are limited on how long they may impose any fees for that cost recovery to five years from the date the local telephone company first begins collecting the charge from its customers.
After you contact the new carrier and make the decision to switch, it could take from a few hours to several business days for the transfer to be complete.
www.state.tn.us /tra/LNP.htm   (1809 words)

 Appendices | Medicare Local Medical Review Policies Tool Kit
If a Carrier's current language is inconsistent with a new CMS determination, the Carrier must change its policy and must publish or provide a link to the policy change on its own website.
Carriers are also required to include these changes in their coverage bulletins as soon as possible.
A carrier may develop or revise an LMRP when it has determined that policy language is needed to assure beneficiary access to care.
www.apa.org /pi/aging/lmrp/toolkit/appendices.html   (930 words)

A few campus carrier stations have been so successful in their programming, however, that they are attracting audience and advertising dollars -- and the ire of some embarrassed commercial broadcasters with powerful transmitters.
Moreover, it will be noted that, not-withstanding their 30 years of operation, not a single complaint is cited by the majority, for the simple reason that virtually no complaints have ever been filed with the FCC regarding campus carrier current radio systems.
The "underground" newspapers appearing on campuses and in cities throughout the nation may soon be joined by a new and powerful medium: Carrier Current Radio [which is] moving off the campuses and into communities, primarily minority and low-income areas...
www.uiowa.edu /~cyberlaw/FCCOps/1971/28F2_357.htm   (3631 words)

In other words, you can't port your number from one metro area to a new carrier in another city hundreds of miles away.
However, if you are trying to transfer a wireline number (also called a landline number) to a wireless carrier, this service may not be available in your area.
Your authorization is required to move your wireless number from your existing carrier to a new provider.
www.easyporting.com   (654 words)

Carrier upgrades and modifications continue to increase the operational effectiveness, technical efficiency, and maintainability of our carrier force.
Other upgrades of carrier systems are more prosaic, but are also critical to the performance of carriers and their crews.
Aircraft carriers are also being modified to make them more environmentally "friendly." As part of our Pollution Control Program, R12 refrigerant conversions began in FY 1996 on Lincoln; this upgrade will be incorporated on all carriers by the year 2000.
www.fas.org /man/dod-101/navy/docs/vision/carriers.htm   (941 words)

 [No title]   (Site not responding. Last check: 2007-10-26)
A carrier current system operated by an electric utility to control the utility’s electrical grid is defined as a power line carrier system in the rules.
Carrier current systems whose fundamental emission is intended for reception on AM broadcast receivers avoid interference to AM radio service by operating on a frequency that is not used by a local AM station.
There is no test procedure specified in the rules for carrier current systems; however, general guidance on emission measurements below 30 MHz may be found in the American National Standards Institute (ANSI) C63.4 Methods of Measurement of Radio-Noise Emissions from Low-voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHz.
home.comcast.net /~gbox/fcc.doc.doc   (3952 words)

 CARRIER CURRENT AM TRANSMITTER   (Site not responding. Last check: 2007-10-26)
The device(s) and circuit(s) described herein may generate and/or be connected to dangerous sources of voltage and current which may be capable of causing shocks, burns or death.
The small, basic tube carrier current transmitter shown below will give excellent audio quality thanks to the use of series modulation; no modulation transformer or choke is used.
RF carrier output is between 1 and 2 watts; although designs similar to this are often called "5 watt" transmitters, that is going by the power input, which many authors seem to like to do to "pump up" the specifications!
home.att.net /~weatheradio/carrier.htm   (1498 words)

 Current Carrier Systems
Secondly, a “verification” of the carrier current system (CCS) is performed with the device installed in three typical installations (in-situ).
Radiated emissions measurements are made around the outside of three “typical” residential type buildings where the EUT (current carrier system) is in operation.
Access BPL are carrier current systems that transmit radio frequency energy by conduction over electric power lines owned, operated, or controlled by an electric service provider.
www.ckc.com /in-houseBPL.asp   (610 words)

 Epinions.com - Switching Wireless Carriers - What You Need To Know Before You Switch
The FCC is allowing carriers to charge these fees to cover their costs of implementing and maintaining WLNP – these costs are in the hundred of millions of dollars per company.
Another carrier is not able to retrieve your number from the original carrier – it belongs to that carrier unless you follow this process correctly.
The process begins, the clearinghouse handles all the transactions between the carriers, and eventually, a confirmation of the switch instruction is sent to the new carrier.
www.epinions.com /content_3590168708   (1674 words)

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