Digital pianos are much more like a full scale piano in electronic version than a keyboard you see in electronic stores. Therefore, you’ll not find digital pianos which have less than 88 keys. Digital pianos allow you to adjust the volume, so if you would like the sound, feel and function of an acoustic piano, the digital pianos are the proper choice. And in the event you plan on utilizing a restricted amount of voices, digital pianos are excellent, as most digital pianos include only 10 -20 additional voices (organ, grand piano, harpsichord, etc) and do not have some of the more exotic voices like harmonica, accordion or animal noises which you could find on synths or keyboards.

Today, I’ll review Yamaha P155 digital piano, which featured professional grade sound quality.

Overview

The Yamaha P155 is the highest quality digital piano that I’ve ever reviewed. The capabilities of the models below it (P85, NP-30, P140) is featured on this piano. Yamaha P155 is going to become marketed towards the intermediate to the professional musicians.

Graded Hammer Action, which featured on Yamaha P155 allows the player to make use of expression and touch to their music that ensure to create a professional grade sound quality. The P155’s Graded Hammer Action imitates the effect of a real pianos which have strings that range from very thin to very thick. The heavier hammer weighting towards the bass part in the keyboard and lighter hammer weighting within the higher areas.

To make sure the finest grand piano sound for the P155, Yamaha attributes it sound quality to its unique recording source: Yamaha’s finest 9-foot concert grand, a handpicked CFIIIS. Subsequent, a master piano technician painstakingly tuned and regulated the CFIIIS to sonic perfection. Then Yamaha applied their Pure CF Sampling technology to accurately capture every aspect in the CFIIIS sound, keeping post-processing to an absolute minimal to preserve sonic integrity throughout. For all those of you not familiar with how digital tones are recorded from acoustic tones, the Pure CF is really a top notch recording system utilized to transfer sound into electronic form. This made a really authentic grand piano sound with powerful, dynamic bass, warm mid-range, and crystal-clear highs.

The 4-level Piano Sampling system is unique to Yahama digital pianos. It gives the capability to make use of extra expression. Based on how hard or soft you press a key, it’ll respond with a tone relative to how heavily you pressed it.

Yamaha P155 comes with two built-in speakers and two 12 Watt amplifiers. It allows you to practice at home and you do not need additional external PA system.

So, you can always plug one in in the event you need one or if you’re performing.

Specifications

• 128 Polyphony
• 17 Voices
• 50 Preset Piano Songs
• Tuning/Transpose
• Metronome
• MIDI IN/OUT
• 7 Demo Songs
• 2 Stereo Headphone Jacks

What’s In the Box

Sustain Pedal, AC Power Adapter, Music Rest, Owner?s Manual

Great Price

According to the high quality of this digital piano as reviewed above, it ought to be priced more than $2000. Nevertheless, most retailers and music stores cost the Yamaha P155 at below $1000.

How many times have you seen the scenario where a baby or toddler receives an educational toy as a gift and the box is more exciting to them than the toy? Do you know why that happens?

Babies and toddlers love creative play. This is how they learn and develop the skills they need to survive and prosper. A toy that offers little use of the imagination will not hold your baby’s attention for long. Once the challenge of learning the skill the toy offers is gone, the baby will want a new challenge. This is instinctive and normal.

A truly educational toy will encourage creative play and imaginative thinking. These toys are classic and will offer years of entertainment value to your child while at the same time allowing your baby to develop the motor and cognitive skills they need to reach their milestones of normal growth and development.

A simple box is a good example of such a toy. As a young baby, they may spend hours putting something in the box and taking it out again. This is helping them develop some of the spacial skills, manual dexterity and creativity they will need to go on to the next stage of development.

A toddler may use the same box to imagine a little house for their toys, a garage for their cars, etc. Their imaginations are allowed free reign to create all kinds of scenarios and situations through the use of pretending. While your child is pretending, they are actually working out problems, processing things they have learned and developing their creative mind.

There are educational toys that stand the test of time and will give your child years and years of creative play and entertainment. Things like playhouses, play kitchens, ride on toys, dress up costumes, etc. will never go out of style and will help your child develop physically and mentally into prosperous little individuals.

Instead of  buying the next best electronic gadget for your child every year, invest in your child’s future. You will get much more value for your money with an educational toy that never goes out of style, gives hours and hours of entertainment value for several years and encourages both physical and creative play.

It is easy to get confused when you are researching computers. Many newcomers get frustrated and it seems like the salesman at the local big box electronic store is speaking a foreign language. Many terms and words apply to the computer industry that does not apply to any other aspect of living. What is software? What is hardware? What is the CPU? ROM? RAM? Let’s take a moment to look at some examples of computer hardware.

Computer hardware is just that, the “hard” surfaces you can touch. Hardware is what the computer is made of. Software is the programs running on the hardware that tell your computer what to do when you use the computer to balance your checkbook, look at email or surf the internet. Examples of computer hardware include:

o The Monitor – what you view the results on, like a television.

o The CPU – central processing unit is where all the complicated math and computing happen.

o CD or DVD ROM – This is the drive that “reads” cd’s or dvd’s. ROM’s are NOT burners the “read only.”

o CD or DVD RW – This is the drives that “burn” or “make” cd’s and dvd’s. Typically they can read and write to a cd or dvd.

o Memory – This is just as it reads; the more memory your computer has, the better it will function.

o Printer – This allows you to print documents (your resume,) pictures, and many times printers have more than one function. Many printers can double up as scanners, fax machines and copiers.

o Wireless or Hardwired Routers – These are the devices that allow you to connect to other computers in your “network.” They can work singly or in conjunction with “modems” which are the devices that allow you to connect to the internet.

Although the list above is quite extensive, it does not include all the examples of computer hardware you might run into. Lot’s of devices are considered hardware (remember, you can touch hardware.) The list of devices not mentioned include cd’s and dvd’s, flash drives, floppy drives and disks, the mouse and keyboard, and the hard drives that store the operating systems and software on.

Computers have different configurations of hardware. Some offer more memory, storage, or optional drives. The type of computer you purchase will depend on what you do with it. There are different configurations available for virtually every application and desire. Whether you are going to play games, just email and surf the net, or plot the distances between the planets and stars, there is a computer set up and ready for you to purchase. Each will be configured a little differently based upon what demands your applications will place upon the hardware.

Hopefully you now have a better understanding of the different examples of computer hardware and can make an informed decision when making your next computer purchase.

In order to ensure that the correct parts and indeed quality parts are fitted to their vehicles, manufacturers of both cars and vans follow what’s called ECU programming. There are many parts on cars and vans that need ECU programming and there is a common problem that many owners face when buying parts whereby when fitting them they discover that the they do not work unless of course the onboard computer is aware of them.

So what exactly is ECU programming you may ask? Well many parts on cars and vans need ECU programming which is short for Electronic Computer Unit programming, with many computer units being situated throughout the car to manage parts programmed to them.

If these certain parts need to be replaced it is vital that they are programmed to the computer in order that the vehicle works. These typically are parts from cars and vans dated from 2007. With these models, new parts will need to be reprogrammed, through the ECU, in order to get the vehical working again. This may mean that once fitted, you need to get help with re-programming from a specialist diagnosis mechanic and your local dealer may be able to help with this. Please also be aware that certain parts will need to re-programmed before fitting.

Most modern Vaxhaull (Opel) electrical parts require resetting whilst in the vehicle itself and will need to go through the process of ECU programming.

However, not all parts will require this specialist treatment so we have developed a list to help and inform you of which do:

All BMW models and include most parts even including the satellite navigation system.

The Volkswagen Golf 2010, 2000cc, TDI speedometer

The Throttle Body in a Toyota Yaris 2009

The Ford Fiesta 2009 power fold wing mirror

The Peugeot 407 2010 clock and all electrical modules and displays

Vauxhall Astra 2005 Fuse box

Vauxhall Astra H MK5 2004-2010

All Vauxhall:

Engines ECU – the engine ECU will require a reset and needs to be reprogrammed to the new vehicle with security details of the vehicle in order to work.

UEC ( Underhood electrical center ) – this also requires a reset, then will also need to be re-programming to the new vehicle.

Instrument Clocks (Dash clocks) – these will also have to be reset from the donor vehicle, and be re-programmed in the same way.

The Radio CD30 / CD70 / CD30MP3 will need resetting before fitting, then will also require programming in order to work.

Central displays will also require resetting and re-programming ( fuel consumption, time and date).

Vauxhall Corsa D 2006-2011- Radio CD30 / CD70 / CD30MP3 – these will need to be reset before fitting, then will also require re-programming.

You will need to remember and ensure that all the above parts are reset before fitting to the new vehicles as they come programmed already.

Those who own art galleries know that after a sale of fine artwork is made to a new client, a fresh headache begins when you consider how to get the artwork to its new home without damage. The surface of fine art photographs as well as paintings are very delicate, and can be harmed by having liquids dropped on them, or scratches to the surface can mar it as well. It is always wise to carefully protect your fine artwork any time it needs to be transported or stored, and there are several ways to do that.

Art Packing Is An Art In Itself

Bubble pouches are the way to go when you are looking for an effective art transport choice. Bubble pouches are made from two sheets of sturdy plastic, inside which are air bubbles. Bubble pouches are also a lightweight but heavy duty choice for art packing, saving you money on postage costs. You can find these pouches in a wide variety of sizes, and what many gallery owners do is place the framed artwork inside the pouch, and then put cardboard corners on each corner to doubly protect those exposed areas. You can choose from a top or side opening for the pouch, and many come with an adhesive strip, so that you can safely close the artwork securely inside the pouch for art transport. The pouches can also be reused if you are looking for an inexpensive way to move your own artwork around safely. Many who have a variety of electronic devices, such as Kindles and other computerized books, or small laptop computers, find that the pouches work equally as well for transporting these delicate items.

Other ways to move your artwork around would be in archival storage boxes. Photo storage boxes are sized so that your fine art photographs can lay flat inside without wrinkling. The corners of better archival storage boxes come reinforced with metal, which means you can safely stack them, even if full, during your art transport, and the images will come through the experience just fine. Photo storage boxes provide an excellent way to organize your prints, because the outside of the box can be labeled by date or event, making it easy for you to find the pictures you need when you want them.

You may have potential clients come into your art gallery to see your artwork, and they will want to touch it. This is bad, because skin oils from fingers can damage the artwork’s surface over time. This is why many artists and gallery owners store their artwork in clear bags. Clear bags made from plastic allow visual clarity so that customers can see your artwork in the clear bags, and they keep fingerprints and dust off the art as well.

Boxes, bags and pouches are the easy answer for safe art packing.

MECHANICAL VACUUM BOOSTERS:-

Mechanical Vacuum Boosters are dry pumps that meet most of the ideal vacuum pump requirements. They work on positive displacement principle and are used to boost the performance of water ring /oil ring /rotating vane /piston pumps and steam or water ejectors. They are used in combination with any one of the above mentioned pumps, to overcome their limitations. Vacuum booster pumps offer very desirable characteristics which make them the most cost effective and power efficient option.

The major advantages are:-

(a) Can be integrated with any installed vacuum system such as Steam Ejectors, Water Ring Pumps, Oil Sealed Pumps, Water Ejectors, etc.

(b) The vacuum booster is a Dry Pump as it does not use any pumping fluid. It pumps vapor or gases with equal ease. Small amounts of condensed fluid can also be pumped.

(c) Vacuum boosters are power efficient. Very often a combination of Vacuum Booster and suitable backup pump results in reduced power consumption per unit of pumping speed. They provide high pumping speeds even at low pressures.

(d) Boosters increase the working vacuum of the process, in most cases very essential for process

performance and efficiency. Vacuum Booster can be used over a wide working pressure range,

from 100 Torr down to 0.001 Torr (mm of mercury), with suitable arrangement of backup pumps.

Everest …………………. Leaders in Vacuum Booster Technology Boosters for Vacuum Process © Everest Transmission January, 2005.

(e) It has very low pump friction losses, hence requires relatively low power for high volumetric

speeds. Typically, their speeds, at low vacuums are 20-30 times higher than corresponding vane

pumps / ring pumps of equivalent power.

(f) Use of electronic control devices such as Variable Frequency Control Drive allow to modify

vacuum boosters operating characteristics to conform to the operational requirements of the prime

vacuum pumps. Hence they can be easily integrated into all existing pumping set up to boost their

performance.

(g) Vacuum boosters don’t have any valves, rings, stuffing box etc., therefore, do not demand regular maintenance.

(h) Due to vapor compression action by the booster, the pressure at the discharge of booster (or inlet of backup pump) is maintained high, resulting in advantages such as low back streaming of prime pump fluid, effective condensation even at higher condenser temperatures and improvement of the backup pump efficiency.

The Table below gives a rough estimate of how the boosters enhance the working vacuums of the processes when installed in combination with various types of industrial vacuum pumps currently used in the industry. They can effectively replace multistage steam ejectors, resulting in considerable steam savings and reduced loads on cooling towers. Mechanical Vacuum Boosters are versatile machines and their characteristics depend largely on backing pump. Various types of backing pump can be used, depending upon the system requirement and ultimate vacuum needs.

However, the final vacuum is governed by the suitable selection of the backing pump and booster

arrangement. The table below gives a broad range of vacuum achieved with various backing pumps combinations.

Vacuum Pump Expected vacuum Vacuum on installation Range of Booster (single stage)

Single Stage Ejector 150 Torr 15 – 30 Torr

Water Ejector 100 Torr 10 – 20 Torr

Water Ring Pump 40 – 60 Torr 5 – 10 Torr

Liquid Ring Pump 20 – 30 Torr 2 – 5 Torr

Piston Pumps 20 – 30 Torr 2 – 5 Torr

Rotary Piston Pumps 0.1 Torr 0.01 Torr

Rotary Vane Oil Pump 0.01 – 0.001 Torr 0.001 – 0.0001 Torr.

Everest ……………. Leaders in Vacuum Booster Technology Boosters for Vacuum Process © Everest Transmission January, 2005.

For example, if a process is using water ring Pump, the estimated working vacuums would be of the order of about 670-710 mmHg gauge (90-50 mmHg abs.), largely depending on the water temperature and pump design. When a Booster is installed prior to the water ring pump, in series, the vacuum levels of the order of 5-10 Torr can be easily achieved. In a Multi-Stage booster installation, vacuum levels of the order of 0.5 Torr & better can easily be expected. Mechanical Boosters offer a completely dry pumping solution and do not add to any vapor load, unlike steam ejectors, and therefore, do not require large inter stage condenses. At low vacuums, higher pumping speeds are required to maintain the through-put, since the specific volume increases with the increase in vacuum. Vacuum boosters enhance the pumping speeds by about 3-10 times depending upon the selection by virtue of which one can expect higher process rates and through-puts. The drawbacks of steam ejector system such as sensitivity to motive fluid pressures and discharge pressure are overcome easily by the Mechanical Boosters, since the volumetric displacements/pumping speeds are insensitive to the inlet & outlet working pressures.

Typical Booster Installation

(1) Evaporator (2) Gauge (3) Condenser (4) Mechanical Booster

(5) backup Pump

Everest …………….. Leaders in Vacuum Booster Technology Boosters for Vacuum Process © Everest Transmission January, 2005.

Calculating the Pump Capacity: –

Based on the fundamental gas laws PV= RT, an expression can be derived for Volumetric Flow Rates required for pumping different vapors/gases. Based on the Mass flow rates one can estimate the pump capacity required.

V = R . Tgas / P Q1/M1 + Q2/M2 …………. Qn/Mn

Where V = Inlet Volume flow rate m3/hr.

R = Universal gas Constant, 83.14 mbar m3/ Kgmol x ºK

Tgas = Gas/Vapor abs. Temp, in ºK

P = Process Absolute Pressure in mbar

Q1, Q2, Q3 = Gas / Vapor flow rate, in Kg/hr.

M1 , M2 ,M3 = Molar mass, in Kg/mol. of gas /vapor.

Booster Operation:

Power Constraints restrict the total differential pressures across the booster. This demands to ensure the total differential pressure across the Booster must not exceed the rated limits. This can be ensured by any of the following means:-

1.) Manual method:- Initially the fore pump is switched on until the required cut in pressure is achieved and there-after the booster is switched on.

2.) Auto method:- Installation of mechanical By-pass arrangement across the booster or hydro kinematic drive or Variable Frequency Drive (VFD). In this arrangement, the booster and fore pump can be started simultaneously from atmosphere.

Advantages of using Electronic Variable Speed Control Device

Electronic A.C Variable Frequency Control Drives are most preferred devices used to regulate the

Booster speed to match the varying load conditions of the process. These drives enhance the overall performance of the Boosters and offer various advantages for the trouble free operation.

The major advantages are: –

1. Booster can be started directly from atmosphere.

Everest ………………. Leaders in Vacuum Booster Technology

Boosters for Vacuum Process © Everest Transmission January, 2005.

2. No need for separate pressure switch, by pass line or offloading valves.

3. Considerable savings in power.

4. Prevents over-heating of Boosters.

5. Protects the Booster against overload and excessive pressures.

6. Offers complete protection to motor against over voltage, under voltage, over current,

Over-heating, ground fault.

7. Eliminates the needs of separate starter and overload relays for the Motor.

8. Automatically adjusts the speed of Booster between low and high range set giving high

pumping speeds with relatively low input power.

The Electronic Variable Frequency Control Drive is a microprocessor based electronic drive which is specially programmed to meet the demands of the Booster allowing it to operate directly from atmosphere along with suitable fore pump. Conventionally, Boosters can be started only after achieving fore vacuum in the range of 30 – 100 Torr, as they are not recommended for direct discharge into the atmosphere. Use of Pressure Switch, Hydro kinematic drive and by pass valves is necessary to prevent the overloading of the Booster. However with the installation of Electronic Variable Frequency Control Drive all the conventional methods can be bypassed since the drive is programmed to regulate the Booster speed automatically, keeping the load on motor within permissible limits. This allows the Booster to start simultaneously with backup pump. When the backup-pump and Booster are started the drive reduces the Booster speed to the pre-set levels and as the vacuum is created the Booster speed picks up, reaching the final pre-set speed, giving most optimum performance over the entire range. Since all the parameters are easily programmable, one can adjust the booster pumping speeds to match the system requirements easily and quickly. The drive limits the current to the motor and safeguards the motor against over voltage, under voltage, electronic thermal, overheat ground faults. i.e. protects the motor against all possible faults.

External computer control over all aspects of booster performance is possible via RS485 serial interface built into the drive electronics. This enables the Booster to be integrated into any computer-controlled operating system.

To know more about this site visit this site: http://www.everestblowers.com

Maintaining quality accommodations and services while reducing costs is the Holy Grail for many in the hospitality industry. This can be a challenge, given that hotels need to carefully select the aspects of operations that can be targeted for cost-cutting measures. Fortunately, state-of-the-art HVAC and lighting controls have allowed many hotels to reduce costs by promoting energy efficiency without sacrificing quality.

In hotels and other similar establishments, energy consumption accounts for three to six percent of the total operating costs. Heating, ventilation, air conditioning, and electronic appliances are some of the biggest power consumption culprits. This is true not just for larger, established hotels, but even small or start-up establishments.

Reducing waste is the common approach to lowering electricity cost, as many hotels consume electricity unnecessarily. Guests are often the primary cause for the power expenditure. Many use more lights than necessary, operate several electronic devices all at once, and even leave these running when they leave a room. This is not always intentional, however, and is often a result of a guest’s forgetting to deactivate the lights or the HVAC system, or not knowing how to operate their controls.

Given these, hotels should look into intelligent HVAC and lighting controls that are not just easy to use, but that can also conserve electricity even without a guest’s active involvement.

For example, instead of using a myriad switches for the lights, heat, air conditioning, and more, a hotel can implement a centralized lighting and HVAC system for the room, and have one device that controls its various features. The lighting controller can be pre-configured with different settings according to the guests’ needs: bright light or dim, night light, etc. It can also contain other controls such as for operating motorized drapes. Some systems even use advanced touch screen technology as a controller, which makes activating, deactivating, or setting room features more convenient.

HVAC and lighting controls can also work through a keycard system. A guest initiates control over the lighting and HVAC by inserting the keycard into a keycard reader. These will then be set to energy saving mode upon the removal of the keycard. This ensures that minimal power is consumed when a guest is not occupying the room. It’s a simple but effective means to prevent the unnecessary use of electricity.

Certain HVAC and lighting controls can afford hotels as much as 30 to 50 percent savings on guest room utility costs, making them a worthy investment for hotels looking for effective cost-cutting measures.

It’s difficult to imagine a boxing match without it. A boxing bell is just as much a staple in any boxing match as are boxing gloves or the round girls that come and go to signal the start of each round. You simply have to have it or you will feel that something about the match is all wrong. Boxing bells work to indicate the start and the end of each round and the match as a whole. The traditional ones are made from metal while the more modern varieties can be housed in plastic boxes that are installed with sound mechanisms, indicator lights and power outlets.

Striker and electronic

There are two main types of boxing bells: the striker bells and the electronic ones. The striker bells are made of either chrome or brass and where popular during the 1920s and 1930s. This is a type of boxing bell that comes with a striker ball that is made of hardwood. A striker bell also has a hole at the bottom of it so it can easily be mounted near the ring.

The electronic bells, on the other hand, come with color-coded buttons. The red, green and yellow buttons are designed to indicate the different stages of a round. They also have delay features in case a match takes longer or shorter than expected.

Shopping tips

When it comes to boxing bells, you need to consider durability. For professional tournaments, the metal varieties are a much wiser choice because they can be used for a longer period. If you’re going to hold regular matches, it’s also better to opt for electrically-operated models because they are portable. You can also use them practically in any place that has an electrical outlet available so they are more convenient.

Metal detectors are electronic equipments used to locate metal objects that are hidden in baggage, ground or on the person?s body. Metal detectors are used for various purposes such as security maintenance, item recovery, archaeological exploration, and geological research. Main parts of metal detectors are control box, shaft, and search coil. Control box which has speaker, batteries, and microprocessor coordinates all activities. The performances of the detectors depend on the features of various parts. Best rated metal detectors are classified according to their performances.

Metal detectors commonly used in airports, hotels, government buildings, and other public places are of the walk-through type. Best rated walk through metal detectors have high target selection, low rate of false alarm, consistent detection, and a two way directional system. Some models that are market favourites have one eighth of an inch thick aluminium shielding panels, which are highly sensitive and easy to handle. Portable walk through model is a best rated metal detector with a simple mode of operation. They are lightweight and require no primary calibration. Prices of walk through metal detectors depend on the brand and features. Usually the prices range from $3000 to $6000. The best-rated metal detectors of this type are Garrett Magnascanner PD 6500, Garrett Magnascanner CS5000, Ceia metal detectors, and Sentrie LC.

Schools, courtrooms, sports events, and public areas use hand held metal detectors. The best rated hand held metal detectors are cheap, lightweight, sensitive, and radiation free. This model is easy to use, reliable, and requires less maintenance. Commercial, professional, all-purpose, beach, gold metal, relic metal and 2-box deep searchers are different types of hand held metal detectors. Garret Enforcer G-2 is the best rated hand held metal detector capable of identifying even very small metal objects. Waterproof metal detectors are also available to recover lost objects from water. Best rated waterproof metal detectors are Mine lab Excalibur 1000, Fisher CZ 20, Head hunter pulse, and Whites Surf Master PI Pro. Tesoro, Whites, Prizm series, Fisher, Garret, and Bounty Hunter are some brands which sell the best-rated metal detectors.