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How Electrical Engineers Are Discover Health Care

Wednesday, 1 July 2015

How Electrical Engineers Are Discover Health Care : Mechatronics

Electrical engineers are professionals dedicated to developing electrical solutions and equipment. They are responsible for providing a variety of industries with powerful, long-term solutions, designed to help solve many types of problems.
One of the most prominent industries to benefit from the aid of electric engineering is the field of medicine. With more intelligent innovations regularly being made, doctors and medical professionals are able to work with stronger and more reliable medical equipment, helping their patients in ways never thought possible before. Since the 1950s, there have been numerous contributions made by skilled electrical engineers to the field of medicine. Many medical professionals believe that even further advancements can be made, helping revolutionize the field and providing patients with more extensive medical care options for their illnesses.
To learn more about relationship between electrical engineers and health care checkout the infographic below created by the New Jersey Institute of Technology’s Masters in Electrical Engineering program.
Mechatronics and Health Care Major Milestones
Engineers have always collaborated with doctors to some degree, and, as time went on, their contributions have become more and more defining. In 1958, engineers helped develop the first portable pacemaker, designed specifically for external wear, helping improve mobility for those who suffer from heart conditions. Later, in 1960, engineers helped develop an implanted pacemaker, which helped extend the life of ten dying patients during the first clinical use. Two years later, John Charnley developed a low friction, high-density cement for hip transplants. In the 1980s, slow release drug systems were invented, helping revolutionize chemotherapy and providing cancer patients with an easier way to fight against the disease. In 1983, 3D printing was developed, which would help further revolutionize advancements in all fields of medicine.
Overall Trends
All electrical developments are geared towards providing medical solutions with a more reliable degree of miniaturization. This means that these advancements are made with portability and ease of use in mind. Microsensors, software developments, and wireless access are all at the forefront of developments, ensuring that patients are never too far from the aid that they need. These advancements also help improve surgical developments and ensure a speedy recovery. With automatic delivery systems developed as well, patients now have a much easier and more efficient way to get the medicine they need on a microscopic level.
Hospitals and Wireless Mechatronics
Hospitals currently stay up to date with engineering developments in order to strengthen the way they communicate with their patients and with each other. Over 86% of all hospitals use cell phones, 83% use mobile workstations, and 82% use PDAs and tablets. These devices make communications much more efficient because they help reduce internal and external interference between groups. Vital sign monitors are made even more efficient with the inclusion of such technology because doctors can stay on top of their patients’ needs as regularly as possible.
Current Solutions
Current technological solutions have already come a long way since their first developmental roots. With advancements in robotics, surgeons can use a remove surgery system, with mechanized robotic arms that perform all of the tasks, making incisions and following the surgeon’s movements. Defibrillator units can also help monitor patients, keeping track of heart rates through wireless signals with a connection between the implanted device and an offsite monitor. Doctors may also use disposable X rays now, which are endoscopic cameras inserted into capsules for easy access to the patient’s internal systems, without worrying about disposal.
Direct Contributions Made by Engineers
Outside of medical changes made by doctors and surgeons, engineers can help contribute directly to the field through their own specialized inventions. Engineers are regularly constructing high-powered prostheses, artificial limbs that can provide distinct electronic advantages. Slowly, advancements are reaching the point where these devices can function almost as well as the original limb. There are numerous brain implants and devices available as well, designed to help provide patients with a better way to retain and restore mental functions. These implants can help control the prostheses, and provide their own advantages for those who need them most.
Future Developments
In addition to existing technological advancements, engineers are always striving to improve the field with further developments. One of the most frequently discussed advancements is the improvement of 3D printing systems, allowing them to be expanded for use in a variety of medical fields, such as dentistry. Ultimately, the goal is to create 3D human organs that can be used seamlessly by the body. Smart pants are another projected development, which will deliver a small, electrical pulse through the body to help stimulate circulation and blood flow. This will help reduce as many as 60,000 annual deaths related to bedsores and poor circulation.

Geared Stepping Motors Basic working Principle & Advantages

Monday, 18 May 2015

Working Principle and Advantages of Geared Stepping Motors

Speed reduction package have acquire wide use with the general objectives of accelerating force and reducing speed.
However, they're additionally utilized in combination with stepping motors requiring high positioning preciseness for the sake of higher resolution, lower vibration, high inertia drive, and
downsizing.
Here we are going to justify the benefits of meshed stepping motors examination the case for choosing the motor alone and the case for choosing a meshed sort.
This choice procedure calculates the minimum positioning time and calculates numerous parameters for 2 totally different conditions: once the motor alone is chosen for the drive for the index table within the figure on the left and once a meshed sort motor is chosen.
Therefore, this procedure encompasses a totally different sequence in places
from the choice procedure given below.

Drive Inertia:
The ratio of the moment of inertia of the load converted for the motor output shaft and the moment of inertia rotor is called the inertia ratio and expressed with the following equation :




SEMICONDUCTORS MCQ VIVA Electrical Elentronics Answers

Tuesday, 28 April 2015

SEMICONDUCTORS Devices  MCQ-EEE,CSE,ETE

1. The diode is best described as:
 a) Switch c) Electrical Storage Device
 b) Check Valve d) Electrical Momentum


2. A silicon diode begins to conduct current at
approximately:
a) 7 volts c) 0.7 lb.
b) 0.7 volts d) 7 lbs.

3. NPN transistors have:
a) 2 leads c) 2 diodes
b) 3 leads d) b & c

4. NPN and PNP transistors are used to:
a) Create Power c) Control Current
b) Change Resistance d) Control Capacitance

5. The ratio of collector current to base current in a
transistor is called:
a) Beta (b) c) Current Control
b) Amplification d) FET

6. A diode made of Gallium Arsenide is called:
a) Zener Diode c) LED
b) Power Diode d) Detector Diode

7. A Field Effect Transistor controls Source to Drain
current by:
a) Diode Conduction c) Base Voltage
b) Base Current d) Gate Diode

8. A Zener Diode is used as:
a) Voltage Reference c) Resistance Control
b) Current Reference d) b & c

9. An Integrated Circuit contains:
a) Diodes and Resistors c) Inductors
b) Transistors and Small d) a & b
Capacitors

10. If the arrow in the symbol for a transistor points
toward the base lead, the transistor is a:
a) NPN Transistor c) FET Transistor
b) PNP Transistor

Ans : 1.b 2.b 3.d 4.c 5.a 6.c 7.d 8.a 9.d 10.b
More to FindA at My Hubpages

Types of USB Connectors


Universal Serial Bus Connectors Types


USB-A Connectors

USB-A female  is that the standard “host” instrumentation kind. this can be found on computers, hubs, or any device purported to own peripherals blocked into it. it's additionally attainable to appear out extension cables with a feminine A instrumentation and a male A instrumentation on the opposite finish.

exp:USB-A ports on a laptop computer.

Female USB-A ports on the facet of a moveable laptop computer. The blue instrumentation is USB three.0 compliant.

Different types of  USB pin cofiguration
USB-A male is that the standard “peripheral” instrumentation kind. Most USB cables can have one finish terminating in associate very USB-A male instrumentation, and far of devices (such as keyboards and mice) can have a intrinsic cable terminated with a USB-A male instrumentation. It’s additionally attainable to appear out USB-A male connectors that unit of mensuration board mountable, for devices like USB memory sticks.

USB-A male instrumentation examples

Two sorts of Male USB-A connectors, on a SparkFun hellhound cable ANd associate AVR Stick development board.

USB-B Connectors

USB-B female is a conventional for peripheral devices. It’s bulky, but robust, so in applications wherever size isn't a drag, it’s the popular implies that for providing a removable instrumentation for USB property. it's typically a through-hole board mount instrumentation, for GHB trustiness, however there unit of menstruation panel-mount choices for it still.
exp:USB-B instrumentation working on Arduino Uno device
Arduino boards, to boot as this Uno, have long used the feminine USB-B instrumentation, as a results of its low price and strength.
USB-B male is type of totally found at the very best of a cable. USB-B cables unit of mensuration present and low price, that additionally contributes to the recognition of the USB-B affiliation.

Male USB-B instrumentation

USB-B male instrumentation on the very best of a Spark Fun hellhound cable.Use as
USB-Mini Connectors
The USB-Mini affiliation was the primary ancient commit to deflate the scale of the USB instrumentation for smaller devices. USB-Mini feminine is typically found on smaller peripherals (MP3 players, older cell phones, very little external arduous drives), and is typically a surface mount instrumentation, commerce robustness for size. USB-Mini is slowly being phased are available in favor of the USB-Micro instrumentation.

USB-Mini female instrumentation

USB-Mini female instrumentation on knowledgeable to snap skilled mini.
 
USB-Mini male is another cable-only instrumentation. like USB-B, it’s quite common, and cables is additionally found cheaply concerning anyplace.

USB-Mini male instrumentation

USB-Mini male instrumentation on the very best of a SparkFun hellhound cable.

USB-Micro Connectors

USB-Micro is a fairly recent addition to the USB instrumentation family. like USB-Mini, the first concern is size reduction, however USB-Micro adds a fifth pin for low-speed signalling, permitting it to be utilized in 

USB-OTG (On-the-go) applications wherever a tool might want to manage as either selection or a peripheral looking on circumstances.
 
USB-Micro female is found on a lot of moderen peripherals, like digital cameras and MP3 players. The adoption of USB-micro as a typical charge port for all new cellular phones and pill computers implies that chargers and knowledge cables have gotten extra and extra common, and USB-Micro is probably aiming to follow USB-Mini at intervals the returning years as a results of the small-factor USB instrumentation of alternative.

Basic Difference between Male & Female in Electronics Connectors

Wednesday, 22 April 2015

Basic Difference between Male & Female in Electronics Connectors

Basic distinction Between Male & female in electronics Connectors

Electronic cables typically have male connectors at every finish.All the electronic devices you utilize in your home electronics have connectors that are available male and female elements. This commonplace arrangement ensures that a connecter fits solely with the alternative gender of constant sort, serving to to standardize cables for power, analog and digital signals. The male differs from the female gender in this it's one or additional signal-carrying pins or protrusions; these work snugly in complementary receptacles on the female connecter. 

figure : DB9 Connectors
Terminology and Identification
Technicians discuss with male electrical connectors as plugs, and to females as receptacles, jacks or sockets. In most cases, you'll simply tell a connector's gender: the male half has sticking metal conductors separated by a plastic dielectric. the female has one or additional sockets simply massive enough to simply accept the male pins. AN RCA male connecter, as an example includes a central pin enclosed by a metal shroud; the female includes a cylindrical metal hole that accepts the pin on the within and also the shroud on the skin. BNC connectors, used for radio-frequency instrumentation, ar tougher to tell apart between male and femalevariations, as each have jutting elements.
 
Orientation and Polarity
The elements in male and female connectors ar homeward specified the 2 work tightly along. additionally, several connectors have a pin layout that stops instrumentation from being connected backwards. A polarized wall plug, as an example, has 2 slots: one for warm and one for neutral power, however the neutral slot is wider. as a result of this distinction, you can't insert a two-pronged electrical device into the female backwards. alternative connectors, like those used for Apple's "Lightning," work along in 2 orientations, and each work properly.
Cable and Panel
Although not a strict rule, most cables have male connectors; females are mounted to instrumentation panels. femalesockets usually have a recessed style, permitting AN instrumentation cupboard to possess a comparatively sleek profile freed from protrusions. within the case of the plug, the female panel connecter has most of the hardware behind the front panel; solely a metal washer and a slim nut extend on the far side the panel's surface.
Design
Because male and female connectors work along, they're similar however ne'er identical. the dimensions of the male pin and female receptacle ar inside thousandths of an in. of every alternative, despite the layout. the female accepts the male usually with a coffee insertion force, creating connections straightforward. On some connectors, like the XLR connecter employed in skilled audio instrumentation, the female includes a latch that captures the male, preventing a user from actuation it out accidentally.






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