Monday, December 26, 2011

Coping With Obsolete Electronic Components

!±8± Coping With Obsolete Electronic Components

As technology progresses, some things are bound to become obsolete. New developments require new products. This is true for most of the things that we use, and electronic components are among them. This is how it will continue to be. The new will constantly enter the scene to take over from the old. That is how progress works after all.

There are several reasons why electronic components may become obsolete. One of the most common reasons is that the products that use the components may no longer be in use. If a product has a short life cycle, it follows that the components that it uses shall also have a short life cycle. Thus, when that product goes out of the market and manufactures cease, it will be the end of life for the components that it uses.

One of the reasons for components becoming obsolete is the impact of governmental policies. Some time ago, when the European Union decided to ban some hazardous parts, component buyers did face some problems. In this case, among the parts to go were those that were not lead-free. With the EU ban in place, those who used components using lead or the other banned substances were hit hard. This was especially a problem in places like the United States, where the law pertaining to hazardous substances had not been put into effect.

One of the effects that the banning of specific components have is that entire machinery may become unusable because of it. For instance, it is not possible to use non-leaded components in machinery that uses leaded parts. This is because the temperatures that each require are very different. Thus, if manufactures cease for one part, several others may be facing the ends of their lives.

Of course, a number of pieces of the various components shall remain with suppliers. However, it is safe to say that finding these components can turn into quite a headache. Some semiconductors can be really hard to find and it may become difficult to locate obsolete integrated circuits. End of life electronic parts remain with a few suppliers to assist people who have to continue using older machinery.

Nowadays, however, it has become less difficult to locate the people who do store obsolete electronic components. An Internet search using the words "end of life electronic components" should provide effective results. With buyers and suppliers looking for trade in electronic components on the Internet, life has become a whole lot simpler.


Coping With Obsolete Electronic Components

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Wednesday, December 14, 2011

Cardiology Supplies,Equipment,EMR Systems,Nuclear Cardiology Cameras,Defibrillators & AEDs

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Tuesday, December 6, 2011

The Essential ECG Simulator Heart Arrhythmias

!±8± The Essential ECG Simulator Heart Arrhythmias

ECG simulator is a device that is used on a regular, even daily or weekly basis, to test the proper functioning of the various vital sign monitors, patient monitors or electrocardiography, ECG monitors. In a hospital setting, with a large number of patients who have or are about to undergo surgeries and whose vital signs are weak, it becomes extremely important that the patient monitors of any kind are functioning correctly at all times.

If you are in charge of testing ECG monitors with ECG simulators in a hospital then in this article we will go over some of the basic simulated ECG waveforms and associated arrhythmias of the heart. By knowing the choices, you will be better able to match the testing procedures and waveforms using ECG machines with the actual situation of the observed patients in your hospital. That way, you will have the best chance to make sure that your ECG monitors and patient monitors are well calibrated for the task at hand.

ECG patterns included with ECG simulators

Normal rhythm of the heart: ECG simulator will typically have an option of choosing an adult heart beat, at around 80 beats per minute, and a pediatric or child's heart beat, at 40 beats per minute.

Irregular rhythms that are caused by abnormal atrium part of the heart

Asystole: No detectible electric signals in the heart. This probably means that the heart is stopped. The opposite is not true. The heart can be stopped even though the electric heart signals are coming in.

Sinus Arrhythmia: The heart as a whole will beat faster due to faster beating of the "pace maker", or the "sinus node" in the atrium. This can often be quite normal, such as in a fearful situation.

Sick Sinus Syndrome: Opposite to sinus arrhythmia, here the sinus node reduces the expected heart rate and the whole heart slows down.

Missed beat: Heart acts normally, misses a beat, and returns to normal action.

SVT: Supraventricular tachycardia, happens when either the atrium or the AV node starts firing faster and regularly.

PAC or APC: Premature atrial contractions, or premature supraventricular contractions. Abnormality when the atria contract earlier than normal.

Atrial flutter: Similar to atrial fibrillation but signal originating in a single part of the atria. The frequency can be as fast as three hundred contractions per minute, but the AV will only allow every other beat through, so the ventricular contractions will be exactly one half.

Atrial fibrillation: Stands for electric signals originated from multiple different places in the atria. Fibrillation will cause faster than normal heart beat. Atrial fibrillation can be either coarse or fine.

Irregular rhythms caused by faulty Ventricules

PVC: Premature ventricular complex, electric signal starts in the ventricle and causes ventricle to beat earlier than normal. This is usually not repeated, but a single event. This can have a focus on either ventricle, left or right, or can be multi focal. PVC can come as single aberration, or in pairs, etc. They are different from Bigeminy or Trigeminy above.

Ventricular fibrillation: Faster and irregular beating of the ventricle. Fibrillation can either be fine or coarse. The fibrillation causes the heart to become unable to beat or pump any appreciable amount of blood through the body. This is termed cardiac arrest, or stoppage of the heart.

Ventricular tachychardia: Faster beating of the ventricle, usually quite regular. A very dangerous symptom.


The Essential ECG Simulator Heart Arrhythmias

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Friday, December 2, 2011

Oregon Scientific SE338/BXTDB Gaiam ECG Touch Watch, Navy

!±8±Oregon Scientific SE338/BXTDB Gaiam ECG Touch Watch, Navy

Brand : Oregon Scientific
Rate :
Price : $70.00
Post Date : Dec 02, 2011 10:31:34
Usually ships in 1-2 business days



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