Pulse-width modulation

Do you think you could live in a world without your phone or computer? What about a world without electrical power at all? Well if an Electromagnetic Pulse, also known as an EMP were to occur, it would change the technology world forever. Such threats are often dismissed as unlikely or a relic from the Cold War. They are not. Solar storms are not infrequent, making it only a matter of time until one impacts our critical infrastructure. And unlike natural phenomena, there is no reliable…

America has become increasingly dependent on electricity. The fragility of electronics and increasing threats worldwide has led to the subject of this paper. How vulnerable is America to Electromagnetic pulse (EMP) attack? What would most likely happen in such an event? What steps can be taken to prepare for an EMP attack? Research shows that Electromagnetic propagation is the silent threat that is not be focused on. The current power grid of the United States is unequipped to handle a large…

Pulse oximetry is a noninvasive procedure that is used to measure the oxygen saturation level of the newborn (Pillitteri & Pillitteri, 2013). The device used in pulse oximetry readings contains two diodes that release equal concentrations of red and infrared light concurrently into the tissue bed the electrode is secured (WHO, 2011). The reading that is displayed is the proportion of reduced hemoglobin and oxygenated blood that is calculated and displayed indicating the oxygen concentration…

while on the go. A large LED display makes it possible to read your results outdoor regardless of the weather or the time of day. TemplR Finger Pulse Oximeter…

Abstract— Optical Pulse Oximetry is feasibly the greatest advance in patient monitoring. Pulse Oximetry enables oxygenation, an important physiological variable that is poorly detected by clinical means, to be monitored continuously and easily. Hypoxemia is commonly found in all aspects of medical practice and is a major cause of organ abnormality and death. It should be widely available and used routinely in clinical practice both in primary care and in hospital. This paper will design a…

Conclusion My hypothesis stated that Digitalis and Furosemide will both work upon the patient’s left side heart failure. However, the experiment concluded that only Digitalis was effective upon the patient’s condition. Administration of Furosemide led to a relatively quick death of the patient. I did not expect the patient to die while being administered Furosemide. In fact, I had hypothesized that while both drugs would work effectively upon the patient, that the Furosemide would work at a…

lungs are offloading CO2 and unable to pick up and deliver oxygen. -Sinus tachycardia and pulse of 124, signs that the body is trying to compensate for hypoxemia.…

Both unipolar and bipolar PWM [41] can be employed. FBHSC modulation scheme is the same as the conventional FB inverter, only with addition of the modulation signal to additional switches. The proposed topology has only four conduction states, which are presented in Fig. 3. MOSFET on-resistance Ron is necessary to limit the instantaneous current when two capacitors…

was dependent on the span, symmetry around the response, voltage, and modulation (as shown by Figure 1) (I., 1972). Since the behavior is dependent on many aspects of the signaling stimulus, it has been observed that shifts sometimes occurs toward it instead of away. This phenomenon is termed the negative JAR, and was attributed to high intensity stimuli (Bullock and others, I., 1972). It was also noted that when this modulation of 10 Hz above and below the fish’s EOD continued for several…

HPS and LED hibay lights are not actually the same as some people may think of. Their differences come in performance. The following are some of the comparisons between these two hibay lights. They include the following. Life comparison LED hibay is basically a semiconductor diode and its source theory of life is very long. The principle of this hibay is to meet within the required temperature range section, L70 light fades standards. However, the entire life of the lamp light source is not…