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The first internal pacemaker was developed in 1958 by Dr. Paul Zoll, who implanted electrodes in the heart to regulate its rhythm. However, the first fully implantable pacemaker was created by Dr. Arne Larsson in 1958 as well, and it was successfully used in a patient. These innovations marked significant advancements in cardiac care, allowing for better management of arrhythmias and heart conditions.

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What is internal gain of amplifier?

The internal gain of an amplifier is the gain or the amplification factor of the transistor used in it....................it is internal because it is fixed for transistors while manufacturing..................


When an electrical impulse originates from somewhere other than one of the pacemaker sites it is said to be?

When an electrical impulse originates from somewhere other than one of the pacemaker sites, it is referred to as an "ectopic impulse." This can occur due to various factors, such as electrolyte imbalances or myocardial irritability, and can lead to arrhythmias. Ectopic impulses can arise from areas within the atria, ventricles, or even the conduction system, often disrupting the normal rhythm of the heart.


What is the value of internal impedance of ideal current source?

internal resistance is always infinite in ideal current source .the internal resistance is in shunt with current source


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Why it is advisable to remove the source and complete the circuit by internal resistance or by a link instead of short circuiting the terminals of the supply?

Because many electronics, like power supplies, have internal energy storage in the form of capacitors. If you were to short the terminals, you would be shorting out the internal capacitors and thus creating a potentially hazardous situation. "Completing the circuit by internal resistance" allows the energy stored in the internal capacitors to bleed off slowly because the internal resistance is larger than a short.

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