Dual Circuit
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Dual Circuit
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New Mini ATM Fuse Tap Add on Dual Circuit Adapter Auto Car Auto Terminals US $5.99
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Blue Sea 8690 e-Series Dual Circuit Plus PN 5511e Blue Sea Systems 8690 US $174.99
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Oster CKSTBUDS00 Inspire Double Burner, Stainless Steel List Price: $39.99 Sale Price: $39.99 |
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The Oster CKSTBUDS00 Variable Heat Control Double Burner provides additional cooking space during the holidays and while entertaining. The Oster CKSTBUDS00 features two solid disc heating elements for easy clean up and dual, independent adjustable temperature controls for all your cooking needs. Cooks and keeps warm. |
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Haier HVTM16ABB 16-Bottle Wine Cellar with Electronic Controls List Price: $129.99 Sale Price: $111.49 |
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16-BOTTLE CAPACITYPERFECT FOR BOTH RED & WHITE WINECOMPACT SIZE WITH A SMALL FOOTPRINTELECTRONIC CONTROLS WITH BLUE LED DISPLAYRECESSED HANDLEDOUBLE-PANE GLASS DOOR WITH BLACK TRIM/BLACK CABINET4 FULL-WIDTH CHROME STORAGE RACKSSOFT INTERIOR LIGHTVIBRATION-FREE ULTRA-QUIET THERMOELECTRIC COOLINGUPC : 688057382388Shipping Dimensions : 18.90in X 17.10in X 21.10inEstimated Shipping Weight : 41.0802 |
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Taylor 5828 Dual Event Timer List Price: $14.00 Sale Price: $5.12 |
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1.5" LCD READOUTTIMES 2 EVENTS SIMULTANEOUSLYTIMES UP TO 23 HOURS & 59 MINCLOCK & DATE MODEEACH TIMER HAS DISTINCTIVE RINGINCLUDES 1 AAA BATTERY STANDS CLIPS OR ATTACHES WITH MAGNETUPC : 077784058282Shipping Dimensions : 7.00in X 5.00in X 1.50inEstimated Shipping Weight : 0.3163 |
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Dual Color Sale Price: $1.78 |
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Hayward SP1580X15 Power-Flo LX Series 1-1/2-Horsepower Above-Ground Pool Pump with Cord List Price: $249.00 Sale Price: $141.90 |
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Hayward Economy Above Ground Pump Perfect for most above ground pools, this economical pump by Hayward combines durable, corrosion proof construction with advanced features and performance. Features Self Priming1 1/2 inch intake & discharge, high performance impeller, heat resistant, double sided seal for long motor life and a 6 foot, 120 volt power cord. |
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First Alert CO615 Carbon Monoxide Plug-In Alarm with Battery Backup and Digital Display List Price: $59.99 Sale Price: $27.95 |
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Carbon monoxide (CO) is the leading cause of accidental poisoning deaths in America, yet many people don't know they are suffering from CO poisoning until its too late. Since symptoms of CO poisoning are like the flu, you might not even know you're in danger at first. That's why a carbon monoxide alarm is an excellent way to protect your family. It can detect the CO you can't see, smell or taste in the air. The First Alert CO615 carbon monoxide alarm uses an electrochemical carbon monoxide sensor-the most accurate technology available. Installation is as simple as plugging it in to any wall outlet. Its easy-to-read backlit digital LED display gives you a clear read-out of current CO concentrations in parts per million. The alarm includes a battery back-up giving you peace of mind in a power outage. The test/silence button both silences a non-threatening alarm or low battery warning and allows you to test the unit's functionality. The unit monitors and re-alarms if carbon monoxide levels persist sounding a loud 85-decibel horn. An audible and visual low battery signal alerts you to replace the battery and an indicator alerts you when a battery has been removed. An end-of-life alarm of three chirps alerts you to replace the unit. Two AA batteries are included. 5-year limited warranty. UL listed. --Bree NorlanderWhat's in the Box One carbon monoxide alarm, two AA batteries, and user's manual |
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Kidde KN-COSM-IB Hardwire Combination Carbon Monoxide and Smoke Alarm with Battery Backup and Voice Warning, Interconnectable List Price: $61.99 Sale Price: $32.50 |
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Untitled Document .caption { font-family: Verdana, Helvetica neue, Arial, serif; font-size: 10px; font-weight: bold; font-style: italic; } ul.indent { list-style: inside disc; text-indent: 20px; } table.callout { font-family: Verdana, Helvetica, Arial, serif; margin: 10px; width: 250; } td.callout3-c26 { height: 100 percent; background: url('http://g-ecx.images-amazon.com/images/G/01/th/detail-pages/kidde/G/01/th/detail-pages/kidde/c26-callout3.png') repeat-y; border-left: 0px solid #999999; border-right: 1px solid #999999; padding: 10px; width: 250px; } ul.callout { list-style: inside disc; text-indent: -12px; font-size: 12px; line-height: 1.5em; } h5.callout { text-align: center; } img.withlink {border:1px black solid;} a.nodecoration {text-decoration: none} span.style171 {mso-style-name:style171; font-size:12.0pt; color:#CC6600;} The KN-COSM-IB combines a Carbon Monoxide and Ionization Smoke Alarm, providing two important safety devices in a single unit. This alarm includes a voice warning system that helps eliminate confusion, as it tells you if its detected fire or carbon monoxide, or even if it needs a new battery. This alarm has 9 volt battery backup, which protects you and your family - even during a power outage when many incidences occur. The alarm also allows you to easily silence nuisance alarms using its convenient Smart Hush feature. This talking combo alarm is powered by your home’s electricity and can interconnect with other smoke alarms in your home. Experts recommend interconnected alarms, because when one sounds, they all sound, providing an early warning against fire by dramatically increasing your ability to hear an alarm anywhere in your home, regardless of where the fire starts. Kidde KN-COSM-IB Hardwire Combination Smoke and CO Alarm with 9V Battery Backup Employs both smoke and carbon monoxide sensors. Inter-connectable to provide improved protection Features a hush button to silence the alarm for non-emergency situations like a smoky dinner. Protects from two different hazards, smoke and carbon monoxide. View larger. Provides the recommended protection of an interconnected system. When one alarm goes off, they all do. View larger. Provides the recommended protection of an interconnected system. When one alarm goes off, they all do. View larger. Combination Smoke/CO Alarm for Improved Safety The Kidde Combination Carbon Monoxide & Smoke Alarm includes a voice warning system that eliminates confusion and clearly warns you and your family of a smoke or carbon monoxide danger, or if your battery is in need of replacement or your alarm is in hush mode. Alarm Warnings Fire: The red LED will flash and be accompanied by three long alarm beeps followed by a verbal warning message “Fire! Fire!” The alarm will repeat pattern until smoke is eliminated. Carbon Monoxide: Four short alarm beeps followed by a verbal warning “Warning! Carbon Monoxide!” This continues until the unit is reset or CO is eliminated. Low Battery: One chirp followed by warning “Low Battery” The red LED light will flash. This pattern will continue every minute for the first hour. After the first hour the red LED light will flash once every minute accompanied by the chirp sound. The low battery warning will only sound once every fifteen minutes. Voice Hush Indication: “Hush Activated” and “Hush Cancelled” voice announcement Peak Level Memory: If the alarm had detected a CO level of 100ppm or higher when the Test/Reset button is pressed, the unit will announce “Carbon Monoxide Previously Detected” to warn of the CO incident. Inter-connectable for Improved Safety Fire and consumer experts recommend interconnected alarms for added protection. According to the National Fire Protection Association (NFPA), most Americans feel they are more at risk of being a victim of a tornado than of a house fire. Actually the opposite is true. Fires are more common than any other disaster that strikes a family at home, and can become deadly in minutes. You have on average less than three minutes from the time you hear a smoke alarm to escape a fire. The sooner you hear an alarm, the sooner you can get out safely. Smoke alarms that link together so that when one goes off, they all go off, are called interconnected alarms. These alarms provide more warnings in more places, giving your family more time to escape a house fire. Houses built after 1993 are required by building codes to have interconnected alarms that are wired into their electrical system. Trademarked Hush Feature for Convenience By pressing the Hush button, you can easily and safely silence nuisance alarms caused by non-emergency situations, such as overcooked dinners. This feature desensitizes the alarm for approximately ten minutes. If the smoke is not too dense, the alarm will silence immediately, the unit will verbally announce “Hush Mode Activated,” and the green LED will flash every 2 seconds for approximately 10 minutes. Reliable 9-Volt Battery Backup, Indicator LED, Test Feature, Low Battery and End-of-Life Warning The alarm’s 9-volt battery backup provides continuous protection, even during power outages. Because this alarm only helps protect you if it's working, this unit features a red LED that flashes every 30 to 40 seconds to indicate that it is operating correctly. For additional peace of mind, the alarm also contains a test/reset button that enables you to periodically test its circuitry and horn. If any form of battery failure is detected the red LED light will flash and the unit will “chirp” one time, followed by the warning message “Low Battery.” This cycle will occur once every minute, and will continue for at least seven days. Seven (7) years after initial power up, this unit will “chirp”every 30 seconds. This is an “operational end of life” feature which will indicate that it is time to replace the alarm. UL 2034, the independent standard applicable to CO alarms, requires CO alarms to have an end of life warning. This requirement went into effect in March 2007, meaning any CO alarm manufactured after April 2007 with a UL listing must have this feature. Most states that require CO alarms in residential dwellings mandate that the alarm meet the UL 2034 standard. The unit measures just 5.75 inches in diameter and 1.7 inches deep, and it features a neutral, white finish. It includes tamper resist features to deter vandalism or theft. This combination smoke/CO alarm is UL listed, so you can be confident of its quality, and it is backed by a 5-year limited warranty. About Kidde: A UTC Fire & Security Brand Renowned for global leadership in fire detection and suppression, Kidde provides solutions ranging from portable fire extinguishers to advanced industrial controls such as flame detection and explosion suppression systems. Kidde is a UTC Fire & Security brand, with a history that’s rich with innovations, from the patent of the Chubb Detector Lock in 1818 to the development of the world's first wireless networked smoke detectors in 2004. What's in the Box Combination smoke and carbon monoxide alarm with mounting bracket and mounting hardware, quick-connect wiring harness, one 9 volt battery, a 5-year limited warranty and a bilingual (English/Spanish) user's manual. |
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Panasonic ES-LA63-S Men's 4-Blade (Arc 4) Multi-Flex Dual-Motor Wet/Dry Rechargeable Electric Shaver with Nanotech Blades, Silver List Price: $299.99 Sale Price: $118.98 |
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.pnaw_overview{background:url(http://g-ecx.images-amazon.com/images/G/01/hpc/detail-page/pnaw-overview.jpg) no-repeat center; padding:40px 0 0 0; font-weight:bold; font-size:12px; color:#0614b2; text-align:center; border: 1px solid #D2D2D2;} .pnaw_overview_text{padding:0 0 0 0; font-weight:bold; font-size:12px; color:#0614b2; text-align:center; border: 1px solid #D2D2D2;} .pnaw_underimage{font-size:11px; color:#0614b2; padding:3px 0 18px 10px; text-align:center;} .pnaw_grey {background-color:#f1f1f1;} .pnaw_spec_name {font-weight:bold; font-size:11px; padding:5px 0px 5px 5px; border: 1px solid #D2D2D2;} .pnaw_spec_value {font-weight:bold; font-size:11px; padding:5px 0px 5px 5px; text-align:center; border: 1px solid #D2D2D2;} .pnaw_spec_value a {font-size:11px; padding:1px;} .pnaw_mainsection {padding:0 0 0 20px;} .pnaw_spec_value_text {font-size:11px; padding:1px; color:#0614b2; text-align:center;} .pnaw_title_color {color:#0614b2 !important;} .pnaw_table_border {border: 1px solid #D2D2D2; border-collapse:collapse;}Panasonic ES-LA63-S Men's 4-Blade (Arc 4) Multi-Flex Dual-Motor Wet/Dry Rechargeable Electric Shaver with Nanotech Blades, Silver Panasonic's Men's Wet/Dry Electric Shavers are packed with smart features that deliver one of the best and closest shaves in the world! The ES-LA63-A electric shaver has 4 sharp blades, a Multi-Flex⢠pivoting head, smart foils, and a fast motor. The wet/dry electric shaver is perfect for portability – allowing you the choice of either a wet shave at home or a quick, dry shave on-the-go – either way it will provide you with the same smooth, clean, yet gentle shave that you need. Panasonic's ES-LA63 electric shaver's overall features allow this shaver to be one of the best electric razors for men in the industry while defining the true meaning of an electric shaver.Panasonic ES-LA63-S Men's 4-Blade (Arc 4) Multi-Flex Dual-Motor Wet/Dry Rechargeable Electric Shaver with Nanotech BladesPanasonic ES-LA63-S Men's 4-Blade (Arc 4) Multi-Flex Dual-Motor Wet/Dry Rechargeable Electric Shaver with Nanotech BladesPanasonic ES-LA63-S Men's 4-Blade (Arc 4) Multi-Flex Dual-Motor Wet/Dry Rechargeable Electric Shaver with Nanotech BladesWet/Dry ShavingAll Panasonic electric shavers have a wet/dry shaving system. The electric shaver is safe to fullyimmerse in water. Enjoy the convenience of a quick shave using the dry operation feature or use wet, with foam or gel, for the same smooth and close shave. 30° Stainless Steel Nanotech⢠Blades The Panasonic ES-LA63-S Men's 4-Blade (Arc 4) Multi-Flex Dual-Motor Wet/Dry Rechargeable Electric Shaver blades are cut at a sharp, 30° angle to cut hair at its base. The hypo-allergenic stainless steel blades and foils that this Panasonic's razor contains provide comfort and less irritation for sensitive skin types.Multi-Flex⢠Pivoting HeadThe Panasonic's electric shaver head pivots back and forth and left to right, conforming to the neck and jaw line, while providing a clean and close shave.Ultra-thin Vibrating Outer Foil The Panasonic's electric shaver's outer foil is incredibly thin at only 41 micrometers, and its subtle vibrations lifts even the most stubborn hairs that lie flat.Multi-fit Arc FoilsPanasonic ES-LA63-S Men's 4-Blade (Arc 4) Multi-Flex Dual-Motor Wet/Dry Rechargeable Electric Shaver's four independently floating blades follow the contours of your face, chin andneck for maximum coverage and comfort.Slit FoilThe electric shaver's Slit Foil catches and cuts long hairs that are difficult for other shaver's blades to catch.Fast, Linear Motor DriveThe electric shaver's linear motor delivers 14,000 cycles per minute – the fastest amongst allelectric shavers! The speedy motor provides a fast, close shave by ensuring a quick cut and eliminating pulling, tugging and irritation.Panasonic ES-LA63-S Men's 4-Blade (Arc 4) Multi-Flex Dual-Motor Wet/Dry Rechargeable Electric Shaver with Nanotech Blades, SilverTrimmerLCD DisplayTravel Pouch/CaseStainless-Steel Foil and BladesFloating HeadsSonic Vibrating Cleaning ModeAutomatic Universal Dual Voltage (100-240V)Awarded the Good Housekeeping Seal of ApprovalMen's Shavers Model OverviewPanasonic ES-LT41-KPanasonicES-LT71-SPanasonicES8243APanasonicES-LF51-APanasonicES-LA63-SPanasonicES-LA93-KPanasonicES-LV61-APanasonicES-LV81-KNumber of Blades3 Blades3 Blades4 Blades4 Blades4 Blades4 Blades5 Blades5 BladesMotor Type LinearLinearLinearLinearLinearLinearLinearLinearRPM/CPM13,00013,00013,00014,00014,00014,00014,00014,000Flexible Pivoting HeadMulti-Flex Pivoting Head 30-Degree Stainless Nanotech Blades Hypoallergenic Stainless-Steel Foil and BladesArc Foil Ultra-Thin Vibrating Outer Foil Lift-Tech Foil Pop-up Trimmer Wet/Dry Shaving Display10-Stage LCD5-Stage LED10-Stage LCD5-Stage LED10-Stage LCD10-Stage LCD10-Stage LCD10-Stage LCDTravel Lock Switch Automatic Cleaning and Charging System Full Charge Time1 Hour1 Hour1 Hour1 Hour1 Hour1 Hour1 Hour1 HourUsage Time45 Minutes45 Minutes45 Minutes45 Minutes45 Minutes45 Minutes45 Minutes45 MinutesAutomatic Universal Dual VoltageTravel PouchBatteryLi-IonLi-IonLi-IonLi-IonLi-IonLi-IonLi-IonLi-IonReplacement Outer FoilWES9187PCWES9187PCWES9161PCWES9167PCWES9025PCWES9025PCWES9171PCWES9171PCReplacement Inner BladeWES9068PCWES9068PCWES9068PCWES9068PCWES9068PCWES9068PCWES9170PCWES9170PCReplacement Foil & BladeWES9027PCWES9027PCWES9020PCWES9027PCWES9165PCWES9165PCWES9030PCWES9030PC Panasonic Arc IV Men's Rechargeable Shaver is a wet/dry shaver with ultra-thin vibrating outer foil, 4-blade, multi-flexible active head, and ultra smooth one pass shaving. |
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Omron Sprague Rappaport Stethoscope |
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A 5-in-1 multipurpose Quintscope, the Omron Sprague Rappaport - Type Stethoscope is designed for flexibilty of clinical needs, sound performance, and affordability. |
Here are some more information for Dual Circuit:

Prior to the end of the 20th century, the use of telephones were limited to the home or workplace. Then technology gave us the pager, the beeper and then the cellular phones.
Everybody will agree that cellular phone is better than the other types of phones because aside from its being handy it also offers differing varieties of features. You can now view movies, listen to radio, and take memorable photos all with the cellular phone handset. Although millions of people use it, it is undeniable that not everyone knows about the technology needed for cellular phones to work.
One such technology is GSM, how many of us know the correct meaning of this acronym? How about its uses?
GSM stands for "Global System for Mobile Communications". This refers to a digital cellular phone technology that is primarily based on a specified standard for how data is sent over a wireless network. GSM was taken over in 1989 by the ETSI (European Telecommunications Standards Institute) and they finalized the GSM standard in 1990. GSM cellular phones use a combination of Time and Frequency Division Multiple Access.
How does GSM work? The GSM works very differently as you compare it to its analog precursor. It can provide you with important features like a fax machine, encryption, text messaging (this is the most commonly used among its services), call forwarding, caller ID, call waiting and multi party conferencing. This is useful because you can talk to the other line without any interference from other calls. The reason for this is because, the frequency channel of GSM is divided into several time slots and as the data travels, there is a specified slot for it, away from the other data. Aside from this, there are also other important features that can be provided by the GSM.
There are several system components and basic services that GSM system can provide to its users. To start with, the key types of GSM devices both include single mode and dual mode mobile telephones, embedded radio modules and even external radio modems.
Since there is a need to distinguish between voice and data communication, GSM has found a way of resolving it. The GSM system has made a significant separation of the circuits between these two important elements - the circuit switch refers to the primary voice service and the packet switch refers to the primary data service.
The main companies that offer a credible GSM service of in the United States are the AT&T and the Cingular companies that already merged into one company now. The second is T-Mobile.
Nicola Kennedy publishes articles and reports and provides news, views and information about communications and GSM and Satellite Telephones [http://www.satellite-telephones.info] at Satellite Telephones Information.
This article may be reprinted in full so long as the resource box and the live links are included intact. All rights reserved. Copyright Satellite-Telephones.info
Dual-modulus prescaler
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The Dual modulus prescaler is an electronic circuit used in high-frequency synthesizer designs to overcome the problem of generating narrowly-spaced frequencies that are nevertheless too high to be passed directly through the feedback loop of the system.
The modulus of a prescaler is its division ratio. Dual-modulus means that it can divide by two different factors, usually M and M+1. Which factor is applied is changed using a control input. By careful arrangement, the system automatically operates to solve the problem at hand.
The Problem
A frequency synthesizer produces an output frequency f, which is the reference frequency fr x the division ratio N such that
f = Nfr
Since N is an integer, the output frequency must therefore be restricted to whole multiples of fr. Typically, these will be the channels for which the radio equipment is designed for, so fr will usually be equal to the channel spacing. For example, on narrow-band radiotelephones, a channel spacing of 12.5 kHz is typical.
Suppose that the divider N is only able to operate at a maximum clock frequency of 10 MHz, but the output f is in the hundreds of MHz range. If we interpose a fixed prescaler with a value M of say, 40, we can drop the output frequency easily into the operating range of the divider N. However, we have now introduced a factor of 40 into the equation, so the output frequency is now:
f = 40Nfr
If fr remains at 12.5 kHz, we can only obtain every 40th channel, not very useful. Alternatively if we reduce fr by a factor of 40 to compensate, the comparison frequency becomes 312.5 Hz, which is much too low to give good filtering and lock performance characteristics. It also means that programming the divider becomes more complex, as we need to only use those ratios that give us true channels, not the 1/40th of a channel that are now available!
The solution
The solution is the dual modulus prescaler. The main divider is split into two parts, the main part N and an additional divider A which is much shorter than N. Both dividers are clocked from the output of the dual-modulus prescaler, but only the output of the N divider is fed back to the comparator. Initially, the prescaler is set to divide by M+1. Both N and A count down until A reaches zero, at which point the prescaler is switched to a division ratio of M. At this point, the divider N has completed A counts. Counting continues until N reaches zero, which is an additional N-A counts. At this point the cycle repeats.
Thus:
f = fr((M(N-A) + A(M+1)))/N which reduces to f = fr((MN+A))/N
So while we still have a factor of M being multiplied by N, we can ADD an additional factor A, which effectively gives us a divider with a fractional part. Only the prescaler needs to be constructed from high-speed parts, and the reference frequency can remain equal to the desired output frequency spacing.
The diagram below shows the elements and arrangement of a frequency synthesizer with dual-modulus prescaler. (Compare with diagram on main synthesizer page).
One can compute A and N from the formula:
A = V mod M
N = V div M
where V is the combined division ratio (V = MN+A). For this to work properly, A must be strictly less than M, as well as less than or equal to N. These restrictions on values of A imply that you can't get every division ratio V. If V falls below M(M-1), some channels will be missing.
Specific Application Example
Dual modulus prescaler waveform with a 10 microsecond scale.
Dual modulus prescaler waveform with a 20 nanosecond scale.
Today, most dual-modulus prescalers exist inside of PLL chips, making it impossible to probe actual signals during operation. The first dual-modulus prescalers were discrete ECL devices, separate from the PLL chips. Here is an example of a dual-modulus prescaler in use. This circuit happens to use a Motorola MC145158 with a Fujitsu MB-501 dual-modulus prescaler operating in the 128/129 mode. The PLL is locked at 917.94 MHz [f in the equation] with a channel spacing frequency of 30 kHz [fr in the equation]. The total integer count therefore is 30598. Dividing this by 128 [M in the equation] yields a quotient of 239 with a remainder of 6, N and A respectively. The result of this frequency choice is that the prescaler spends most of its time counting at 128, and just a brief period at 129.
This is shown by the upper purple trace, the modulus control or counter output. These two screen captures differ only in the horizontal scale. The lower, yellow trace is the N counter output whose frequency corresponds to the channel spacing frequency of 30 kHz. The green trace is the output from the dual-modulus prescaler, which happens to correspond to 7.1714 MHz in the case...(and so on) To get More information , you can visit some products about 6x9 Car Speaker, LED Clock Radio, . The Sanyo Photo Batteries / Toshiba & Panasonic Photo Batteries products should be show more here!
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dual polarity power supply design ?
I must design a power supply with dual polarity ,I know there's a lot of designs on the web but the trick is the same output must be used to give positive polarity onetime and negative in the other as the AC signal (sinwave) inverted - I just want the rectified circuit ?
someone told me you must try to change with the ground,but I don't know the right connection ???
http://yfrog.com/2r5vtransformerlesspowersp
Here's is an excellent and easy design:
Okay, the DC output of your power supply has three terminals, the positive, the negative, and the common ground.
The AC input has two terminals, call them hot and neutral.
First, connect a rectifier diode from the hot AC to the positive output terminal. The anode side of the rectifier connects to the AC.
Similarly, connect a second rectifier diode from the same hot AC to the negative output terminal. But reverse the polarity of this rectifier, so that the cathode side is connected to the AC.
Connect the neutral AC input directly to the output's common ground.
Finally, connect a filter capacitor from each output to the common ground.
You're done!
If you need the output voltages to be precise and 99.9% without ripple, add a regulator to both the positive output and the negative output
Diamond seasons wind down, tennis gears up, rodeo takes a break
The Wood River High School tennis and golf teams continued to enjoy spring season success last week—and the Wolverine baseball and softball teams looked ahead to the upcoming district tournaments.
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US $19.95










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