All for Joomla All for Webmasters

Successful Asian Plastic Surgery

Jun 13, 2019

People of Asian ancestry can find excellent plastic surgeons who are familiar and experienced in altering and repairing Asian facial features. Asian surgery is very similar to any other plastic surgery and often results in very successful outcomes. Asian surgery is performed throughout the world as well as in the United States.

Because an Asian’s facial features are very different from European facial features, there are more surgery techniques necessary to achieve suitable results. Most surgeons work hard not to change the patient’s ethnicity and strive to keep existing Asian facial features intact after surgery.

Most surgeons specializing in Asian plastic surgery have had many years of training to give them the tools necessary to accommodate the wishes of their Asian patients. Some have even received advanced training at Asian medical institutions where they have learned how to perform specialized surgical techniques.

Plastic surgeons perform many different procedures on their Asian cosmetic surgery patients. The most common surgeries they perform are on the eyelids and on the nose. The surgeon creates a superior palpebral fold in one eyelid during what is known as a double-eyed procedure. Augmentation rhinoplasty is performed on the nose using an alloplastic implant. Plastic surgeons also perform less invasive procedures on their Asian patients including chemical peeling, dermabrasion and botox injections. Some are even using lazer treatments to treat certain skin conditions such as wrinkling and age spots.

All double eyelid surgery performed on Asians is done with great caution because Asian patients have unique skin conditions which are much different than the skin of Caucasians. Asian skin is more prone to infection and complications so surgical techniques are done very carefully and the patient is watched closely both during and after surgery.

double eyelid surgery is becoming more and more popular because it is no longer only people of European descent who want and can afford to improve their appearance through surgical intervention. More and more Asians living in America and in Europe want to look more “white” and are choosing to have their noses restructured and folds added over their eyes.

Thus with all these surgeries that are be done, it is paramount that prior to having surgery done, enough research on the place of surgery and the doctor in charge has been done. Without prior research, you may end up regretting the decisions you have made with the changes done.

Read More

Surge Protector Components

Jun 13, 2019

Surge protectors are appliances designed to protect household and electrical devices. They regulate the voltage supplied to a device by blocking or by simply shorting it into ground voltages from a safe threshold.

For many years now surge protectors have prevented thousands of fire accidents caused by electrical malfunctions at home. It has also saved millions of people from possible electrocution accidents. This product is regarded as basic needs in every home.

Surge protectors has important primary components, working together to function efficiently.

First on the list is the Metal Oxide Varistors. It contains granular zinc oxide and conducts a current when in contact with a voltage higher than what is rated. Metal oxide varistors limit the voltages to about three to four times the normal voltage of a circuit by diverting the surge current into other locations.

The Metal Oxide Varistors can be connected in a parallel formation in order to increase its life expectancy and current capability. They are usually thermal-fused or protected to avoid fire hazards and short circuits.

Another important component is the transient suppression diode. It provides protective components on the limiting action but it does have a low current capability. The voltage can be limited to about less than two times of the voltage, particularly when in normal operation. When current impulses remain in reference with the device ratings, its life expectancy will be extended. Transient diodes can also be used in areas where spikes significantly occur more often than usual or once a year. Transient diodes do not degrade with use.

The third component is gas discharge tube. It relies on the gas trapped between the two electrodes ionized by a high voltage in order to conduct an electrical current. Gas discharge tubes are capable of conducting more current in respect to their size as compared to the other components. They take time in triggering and permitting higher voltage spikes to exist before they conduct a significant current.

Gas discharge tubes also do not let pulses of five hundred volts or more in duration. Additional protection is needed in some cases in order to prevent more damage that is due to this effect. They are also used commonly in high frequency lines.

Next is the selenium voltage suppressor. It is a clamping type of semiconductor. It is similar to a metal oxide varistor but with a longer life as compared to the latter. It is commonly used in high energy circuits like that of an alternator exciter field. It can dissipate large amounts of power continuously and still retains its characteristics, especially clamping throughout the event if properly sized.

The crowbar circuit is another important of surge protectors. It uses a zener diode that divides the gate of a rectifier, which are silicon controlled latches of any high voltage. This is until the power is turned off. On the other hand, the zener diode will set the trip voltage and will latch on later when it has exceeded.

Last but not the least is the carbon block spark gap over voltage suppressor. It is an old type of technology but it is still found in some telephone circuits. Carbon rods are held together with an insulator from a specific distance from the other carbon rod. The dimensions of the gap will determine the voltage where a spark will jump from the two parts and will short to the ground.


Read More

Why Use DIN Rail Mount Power Supplies?

Jun 9, 2019

WE’VE ALL BEEN THERE: putting a control system together from a number of manufacturers’ kits, including a pile of circuit boards, rack mount pieces, and about a mile of assorted cable. So here we go, marking and drilling holes in NEMA boxes, or rack panels, or any other flat surface that resembles a good home for the circuit board components, and installing a handful of standoffs to keep things from shorting out. Finally, the moment of truth—the cards are ready to be screwed into their respective new homes. But wait— no matter how precise I thought I was being with all of the mounting and drilling, it never fails that fourth screw just never seems to be in the right place. So here I go, wasting vast amounts of billable time just mounting the gear, when I really . . .

Well those days are slowly disappearing with the migration of a simple, yet elegant technology from the world of industrial automation to the land of entertainment control. The technology is called DIN Rail, a standardized piece of mounting hardware designed to reduce the cost, time, and the frustration of assembling a pile of small devices into a larger cohesive system. DIN rail is not a new invention, but it has only recently been adopted by a few manufacturers in our industry. The idea behind DIN rail is this: you take a single long bracket (the rail), bolt that into your box, or to whatever substrate you need to mount your devices, and then you clip all of your electronic gadgets to that. The single bracket ensures nice tidy mounting of everything in a line, with very few holes, nuts, and bolts, allowing the installer to focus more on getting the stuff connected than getting the devices mounted to something. This is great deal more efficient, and the result is typically a lot tidier and more serviceable.

Another advantage to DIN rail is, because of its long history in industrial automation, there are a great number of devices available from outside our industry that are applicable to the things we do. Items such as Ethernet Switches, DC and AC power supplies, a vast array of terminal blocks, and discrete power relays are just a few of the interesting industrial products available in DIN rail mount. This is great, as it opens up a number of possibilities for custom interface and control devices comprised of industrial automation devices, coupled with devices tailored to entertainment. And, since most everything is small and single-purpose, you can end up saving a lot of money in labor, enclosures, and devices.

There are only a couple of things that need to be considered when choosing DIN rail for a project. First of all, the largest variation in the rail comes in the form of the metal used to make it. Choosing the right metal for the job is important, especially in an application where the rail itself is used for grounding the system. Typically it is better to choose rail of the same metal as the box you are installing it into. This will prevent corrosive metal interactions, preserving the grounding bond. Rail is available in stainless steel, steel (zinc plated or galvanized), aluminum, or copper.

Lastly is the profile. There are three standard profiles for DIN Rails, and it is necessary to make sure that you select the right rail for the devices you’re mounting on it. Some devices will accept different profiles, but it is advisable to consult the manufacturer first to get the correct rail specification. Some profiles are also more common than others, and typically manufacturers will follow the trend when designing devices. The most common shape is TS35 (DIN 46277-2), which is 35mm across and between 7.5mm and 15mm deep.

Due to its simplicity and effectiveness, DIN rail will continue to be adopted throughout our industry. The wide availability of devices and enclosures incorporating DIN Rails continues to increase, making it ever easier to design the right system for just about any job, using devices and components from our industry, as well as industry at-large.

Read More

Buck Converters is Easier Than You Think

Jun 7, 2019

There is no uncertainty that exchanged mode power supply configuration is getting progressively common. Requests on batteries to last longer to give improved talk time mean a productive way is expected to converter one voltage to another.

While battery voltages remain genuinely consistent, processor voltages are getting ever lower just as expending progressively current. This puts weight on the power supply designer to structure increasingly productive buck converters.

When the plan has been finished, a legitimate reproduction instrument, (for example, LTSpice) is expected to cross check the better purposes of the structure to guarantee ideal productivity has been accomplished.

Buck converters depend on the properties on inductors to proficiently change over a high voltage to a lower voltage. An inductor has least dc resistance and if a low resistance transistor is utilized to change the voltage to an inductor, at that point the warmth dispersal (and thus power misfortune) of the circuit can be kept to a base.

A Buck Converters changes a voltage to an inductor, sits tight for the current in the inductor to incline to a specific dimension at that point separates the voltage. The flyback properties of the inductor mean the exchanged end flies negative, making the inductor vitality be passed to a yield capacitor to power the heap.

The majority of the current and voltage waveforms of the lift converter can be reproduced in LTSpice, giving the plan a crucial learning of how the circuit is performing.

The current in an inductor inclines directly with time and this slope is corresponding to the voltage over the inductor and conversely relative to the inductance esteem. Along these lines by picking the right estimation of inductor, the speed of activity of the circuit can be resolved. Once more, the flows and voltages can be examined in LTSpice.

Keeping the inductor swell current to about 40% of the yield current guarantees a decent exchange off between exchanging misfortunes and inductor measure.

Ideal productivity is acquired via cautious determination of the top and base MOSFETs as well. The top MOSFET needs low door charge (Qg) just as low ON resistance. The base MOSFET just needs low ON resistance.

The obligation cycle additionally becomes an integral factor. The obligation cycle of a Buck Converters is Vout/Vin. On the off chance that the information voltage is high or the yield voltage is low, the obligation cycle will be low, so the top MOSFET may be on for a brief timeframe. Along these lines the top MOSFET needs low entryway charge, nearly at the insignificance of ON resistance.

Read More

Top 5 Ideas You need to know to have a Great and Tranquil Staycation

Jun 6, 2019

So уоu’vе worked hard thе whоlе уеаr, аnd it’ѕ timе for a vасаtiоn or staycation in Singароrе. But whаt if thе budget iѕ tight аѕ it gеtѕ, аnd you rеаllу саn’t afford tо gо somewhere? Stаусаtiоn – a vacation in уоur hоmе tоwn (or ѕоmеwhеrе nеаrbу) – may be уоur оnlу option. Unfоrtunаtеlу I’ve hаd to rеѕоrt tо thiѕ tуре оf vасаtiоn ѕеvеrаl timеѕ in thе раѕt due tо, еh, overdue lоаnѕ. On thе bright side, I’vе bесоmе quitе adept аt thiѕ ѕоrt оf vacation or staycation, ѕо I’ve decided tо ѕhаrе mу top 5 Singapore ѕtаусаtiоn tips with уоu, dеаr rеаdеrѕ.

Chесk them оut below:

  1. Virtuаl Viѕitѕ

Evеn if you had еnоugh mоnеу for a рrореr vасаtiоn (аnd уоu dоn’t, оthеrwiѕе уоu wоuldn’t bе rеаding thiѕ), сhаnсеѕ аrе уоu’d only visit оnе dеѕtinаtiоn. Well, whу nоt mаkе a virtual visit to ѕеvеrаl of them during уоur staycation Singapore? Rеnt ѕоmе соuntrу guidеѕ, load uр some mapping аnd viѕuаlizаtiоn ѕоftwаrе аnd еmbаrk оn a virtuаl voyage. Yоu саn аlѕо make a virtual viѕit tо ѕоmе intеrеѕting lаndmаrkѕ thrоugh 3D viѕuаlizаtiоn ѕоftwаrе; fоr example check оut the fаѕсinаting аrсhitесturе оf the Orсhid Club in Singароrе. You can аlѕо tаkе screenshots of places уоu find intеrеѕting for futurе reference – whо knоwѕ, whеn уоur budget imрrоvеѕ, уоu might want to actually viѕit thiѕ lосаtiоn.

  1. Theme Evenings

Inѕtеаd of kеерing to thе triеd аnd tеѕtеd “local” cuisine, why not сеlеbrаtе another culture? And whаt wоuld bе a bеttеr wау tо do it thаn thrоugh itѕ сhаrасtеriѕtiс fооd, drinkѕ аnd muѕiс. Rеаd up оn уоur tаrgеt соuntrу – Singароrе, fоr еxаmрlе – dig up ѕоmе niсе rесiреѕ, buy some CDs with Iriѕh muѕiс (уоu can еvеn dоwnlоаd ѕоmе fоr free), buу a саѕе or twо оf Guinnеѕѕ, O’Hara’s оr ѕimilаr beers, brush up уоur Gaelic a bit (OK, that mау bе a bit tоо muсh)… Thrоw a раrtу, invitе уоur friends over and explore the tаrgеt culture until уоu’vе hаd too muсh. Keep in mind thаt these “evenings” nееd nоt bе аbоut еxiѕting сulturеѕ; whу nоt hоѕt a рirаtе раrtу with a lоt оf grog, аrrr matey? Bе рrераrеd fоr ѕоmе thеmе-ѕресifiс сlеаning the nеxt dау, though. Rinse and rереаt with аnоthеr соuntrу when уоu rесоvеr!

  1. Hоmеtоwn Tоur

Why nоt explore some ѕitеѕ that are located right undеr уоur nose? Depending оn thе size оf the сitу you livе in, уоu may hаvе mоrе оr lеѕѕ ѕightѕ tо viѕit, but your tоur nееd not bе соnfinеd tо juѕt уоur home сitу – аdjасеnt urban areas аrе just as gооd if nоt bеttеr. Visit ѕоmе local  galleries, planetariums, аmuѕеmеnt раrkѕ аnd other “tоuriѕtу” ѕitеѕ that уоu never hаd thе timе tо explore bеfоrе. Trеаt уоurѕеlf with a dinnеr in a niсе rеѕtаurаnt уоu’vе never been to, but аlwауѕ wanted tо gо tо. Tаkе a night ѕtrоll through the grееn аrеаѕ, and juѕt gеnеrаllу tаkе the timе to ѕtор and ѕmеll the flоwеrѕ. Don’t forget уоur саmеrа!

  1. Frеquеnting Pools and Thеrmаl Rеѕоrtѕ

A реrfесt staycation Singapore fоr mоѕt people inсludеѕ bеасhеѕ аnd аll thаt stuff thаt goes along with bаking yourself undеr thе Sun fоr hours. Wеll, ѕinсе уоu аrе соnѕidеring a Singapore ѕtаусаtiоn, whу nоt behave likе уоu’rе in a niсе ѕummеr resort – inѕtеаd оf tо thе bеасh, gо tо thе рооl in thе mоrning, and ѕtау there thе whоlе dау. Thеrmаl rеѕоrtѕ & ѕраѕ аrе аlѕо great fun if уоu hаvе some in thе vicinity. If роѕѕiblе, gо tо a diffеrеnt рооl/rеѕоrt еvеrу dау fоr a wееk, as it will nоt cost уоu thаt muсh and уоu will hаvе аn орроrtunitу tо рiсk the bеѕt оnе tо еvеntuаllу viѕit mоrе оftеn, еvеn while not on a staycation.

  1. Hunting Stuff

Chаnсеѕ аrе уоu hаvе a hоbbу. If уоu dоn’t, thеn there iѕ certainly a “саtеgоrу оf itеmѕ” thаt interests уоu – bе it antiquities, tесh gаdgеtѕ, аrt, ѕtаmрѕ, сigаrеttе bоxеѕ, bооkѕ, сlоthing, vintage itеmѕ etc. Dеvоtе уоur Singароrе staycation tо уоur hobby or intеrеѕt, аnd fосuѕ on “hunting” fоr сhеар deals on items уоu аrе intеrеѕtеd in. Electronic аuсtiоnѕ аrе оnе орtiоn, but it is far mоrе еnjоуаblе (at lеаѕt fоr mе) tо viѕit lосаl flеа mаrkеtѕ, уаrd ѕаlеѕ, fairs etc. Finding gооd dеаlѕ iѕn’t еаѕу, but wе аrе all familiar with that gооd feeling whiсh соmеѕ after you finаllу manage tо find that XY itеm thаt you’ve bееn ѕеаrсhing fоr аgеѕ. Don’t соnfuѕе thiѕ with regular ѕhоррing – I’m tаlking mаinlу about collector’s itеmѕ here, ѕоmеthing you rеаllу enjoy brоwѕing, but аnуthing you consider fun will work!

Read More

How Do Bridge Rectifiers Work?

Jun 5, 2019

A rectifier is an electrical device that changes rotating present (AC), which regularly turns around direction, to direct existing (DC), which flows in only one direction. The procedure is known as rectification. Physically, rectifiers take a number of forms, containing vacuum tube diodes, mercury-arc valves, solid-state diodes, silicon-controlled rectifiers and other silicon-based semiconductor switches. Historically, even simultaneous electromechanical switches and motors have actually been made use of. Early radio receivers, called crystal radios, made use of a “cat’s whisker” of wonderful wire pressing on a crystal of galena (lead sulfide) to serve as a point-contact rectifier or “crystal detector”.

Rectifiers have numerous uses, but are frequently located functioning as aspects of DC power materials and high-voltage direct current power transmission systems. Rectification may serve in jobs besides to produce direct present for use as a source of power. As noted, detectors of radio signals work as rectifiers. In gas heater flame rectification is utilized to spot presence of flame.

The easy procedure of rectification produces a kind of DC distinguished by pulsating voltages and ebb and flows (although still unidirectional). Depending upon the sort of end-use, this kind of DC existing could then be further tailored into the kind of relatively constant voltage DC usually produced by such sources as batteries and solar cells.

Rectifier Circuits

Rectifier circuits could be single-phase or multi-phase (3 being the most normal number of phases). A lot of sensible power rectifiers for domestic equipment are single-phase, however three-phase rectification is crucial for industrial applications and for the transmission of energy as DC (HVDC).

Half-wave rectification

In half wave rectification of a single-phase supply, either the positive or adverse half of the AC wave is passed, while the other half is obstructed. Because only one half of the input waveform reaches the result, indicate voltage is lessened. Half-wave rectification requires a single diode in a single-phase supply, or 3 in a three-phase supply. Bridge Rectifiers generate a unidirectional however pulsating direct existing; half-wave rectifiers produce far a lot more ripple than full-wave rectifiers, and much more filtering system is needed to do away with harmonics of the AC regularity from the outcome.

Full-wave rectification

A full-wave rectifier changes the entire of the input waveform to one of steady polarity (positive or unfavorable) at its output. Bridge Rectifiers changes both polarities of the input waveform to DC (direct existing), and yields a greater mean outcome voltage. 2 diodes and a center tapped transformer, or 4 diodes in a bridge setup and any type of AC source (including a transformer without center tap), are required. Single semiconductor diodes, double diodes with usual cathode or typical anode, and four-diode bridges, are produced as single parts.


Read More