Any circuit or device that carries an electrical current is a potential source of EMI. The objective in electronic system design is to achieve electromagnetic compatibility between the subsystems in an electronic assembly and between that assembly and other electronic devices that it will encounter in its operating environment.
Any barrier placed between an emitter and a susceptor that diminishes or attenuates the strength of the potential interference qualifies as an EMI shielding.
The EMI shield effectiveness of an enclosure is a function of material and design, as well as the service conditions. Thus, radiation incident upon an EMI shielding barrier is absorbed, reflected or transmitted. For metal shields and high impedance fields, most of the energy is reflected; if the magnetic field is dominant, absorption is the principal mode of attenuation.
Automotive
12/30/2014
10/29/2013
10/15/2013
Introduction of Digital Signage System
Digital signage system may be LCD or plasma
screens, LED boards, projection screens or other emerging display types like
interactive surfaces or organic LED screens (OLEDs). New technologies for
digital sign are currently being developed, such as three-dimensional (3D)
screens, with or without 3D glasses, 'holographic displays', water screens and
fog screens.
A stand-alone, easy to use, low-cost digital signage system offering HD 720p crystal clear picture quality for educating and informing the audience. It is a super compact, extremely light-weight player ideal for use in small-to-medium scale installations with limited budgets.
The Function of Advertising Player
The advertising player is a new technology
provides people a brand new visual sight. It contributes high quality visual
discover products and accessories for the industrial LCD sell. These devices
create digital link pictures and videos and are the perfect publicizing
instrument. Ad Players, Touch Screen Monitors and LCD's are available in both
netting and accord-alone one for report, kiosk, and vending.
The advertising player is sometimes referred to as the advertising industry gamester, or ad trifler, panel pc, business pc, industrial lcd or reach protect supervise. They create digital loop describe and videos and are the perfect advertising puppet. They alternate in screen largeness from 7” to 46” and can have touch screen expand often appeal to as touch shelter track.
10/14/2013
Main Idea of AC/DC Power Adapter
Ac Dc Power adapter is a device supplies ranging
from 1 W to 2400 W CUI offers a comprehensive selection of ac-dc power supplies
ranging from 1 W to 2400 W. Available in external and internal configurations,
these power supplies have been designed for a range of markets including
consumer, industrial, telecom, and medical.
Switched-mode power supplies are usually regulated, and to keep the output voltage constant, the power supply employs a feedback controller that monitors current drawn by the load. The switching duty cycle increases as power output requirements increase.
The AC DC power adapter or AC DC converter is a type of external power supply, often enclosed in a case similar to an AC plug. Other names include plug pack, plug-in adapter, adapter block, domestic mains adapter, line power adapter, wall wart, or power adapter; adapters for battery-powered equipment may be described as chargers. AC adapters are used with electrical devices that require power but do not contain internal components to derive the required voltage and power from mains power. The internal circuitry of an external power supply is very similar to the design that would be used for a built-in or internal supply.
06/04/2013
Pencil Coil
Pencil coils are used in vehicles with a fully electronic ignition. They
are attached directly to the spark plug. With this coil type the
high-voltage pulse is generated directly at the spark plug. The
advantage: There is essentially no cable loss.
In addition, this
compact design provides for valuable additional space - which is
particularly important in modern engines - since the spark plug shaft
and ignition coil would otherwise take up this essential space.
Due
to its installation position directly in the cylinder head, however,
this ignition coil type is subjected to higher thermal loads and often
subjected to more vibrations.
Replacing an Ignition Module
NOTE: Because replacing an ignition module can be quite dangerous, this is a fix better left to an experienced mechanic.
Has your vehicle begun to sputter, stall, or be difficult to start? Have you tried all the usual fixes: checking the battery, checking the fuel line, adding a gas additive to rule out water in the fuel tank, and making sure the spark plugs aren't fouled?
If your vehicle is basically an around-town car, have you tried running it on the freeway for a while, just to blow out any carbon build-up in the engine? Any of these things can cause a reduction in the starting and overall performance of your vehicle.
If you've considered all of these possibilities and had no luck, it could be that your ignition module needs to be replaced. In case you aren't familiar with the ignition module, it is the intermediary device that, once you turn the key, transfers a signal from a sensor in the distributor to the ignition coil, which in turn makes the spark plugs fire. The ignition module could be in the distributor itself, on the outside of the distributor, or inside the compartment. Some modules also adjust timing.
When this component needs replacement, you'll have a variety of symptoms to let you know that it's time. Unfortunately, many of these symptoms are the same as for other engine or component problems, so you might need to do a little of your own automotive analysis to pinpoint this problem.
To proceed the steps, please see: http://www.dmv.org/how-to-guides/ignition.phpWhat Does The Crank Angle Sensor Do?
In most modern cars the crank angle sensor 'tells' to engine control (computer) the position of the crankshaft in ratio with the camshaft; both are syncroniced to an especific position to produce the combustion (that means the camshaft sensor to do the same) with this readings (from both sensor) the computer fire up the fuel injectors & the ignition coil by controling the frecuency of the fuel injection your engine is managed to proper performance & this start with the crank sensor trigger signal.
Ignition Coil
An ignition coil (also called a spark coil) is an induction coil in an automobile's ignition system which transforms the battery's low voltage to the thousands of volts needed to create an electric spark in the spark plugs to ignite the fuel. Some coils have an internal resistor while others rely on a resistor wire or an external resistor to limit the current flowing into the coil from the car's 12 volt supply. The wire that goes from the ignition coil to the distributor and the high voltage wires that go from the distributor to each of the spark plugs are called spark plug wires or high tension leads.
Originally, every ignition coil system required mechanical contact breaker points, and a capacitor (condensor). More recent electronic ignition systems use a power transistor to provide pulses to the ignition coil. A modern passenger automobile may use one ignition coil for each engine cylinder (or pair of cylinders), eliminating fault-prone spark plug cables and a distributor to route the high voltage pulses.
Ignition systems are not required for diesel engines which rely on compression to ignite the fuel/air mixture.
Recent Comments