The Current

CHAPTER1 INTRODUCTION TO ZVT 1.1 What is ZVT? Zero voltage switching can best be defined as conventional square wave power conversion during the switch’s on-time with “resonant” switching transitions. For the most part, it can be considered as square wave power utilizing a constant off-time control which varies the conversion frequency, or on-time to maintain regulation of the output voltage. For a given unit of time, this method is similar to fixed frequency conversion which uses an adjustable…

of 1A current. 12 V output of the step-down transformer is the RMS value and its peak value is given by the product of the square root of the two with RMS value which is approximately…

conduction states, which are presented in Fig. 3. MOSFET on-resistance Ron is necessary to limit the instantaneous current when two capacitors are connected in parallel (e.g. in Fig. 3c). Seeing that, MOSFET is the preferred switch to realize the proposed converter, due to its resistive behavior when conducting. With the intention to simplify the analysis, it was assumed the current, independent of the direction, always will be conducted by the MOSFET channel, instead of the body diode. The…

Ella True 11/16/14 Schneck 3 Honors Chemistry Energy Persuasive Essay Before reading this paper, one should understand what electricity is and how it works. One should also understand that electricity is a type of energy. Electricity is simply the flow of electric charge. This may sound fairly straight forward, but there is a lot more to this simple statement. One might wonder: Where exactly is this charge coming from? What is obtaining this charge? How is the charge flowing and to where? How…

speed controller, and voltage source inverter (VSI). A.PULSE WIDTH MODULATION It is a commonly used technique for controlling power to inertial electrical devices, made practical by modern electronic power switches. The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast pace. The longer the switch is on compared to the off periods, the higher power supplied to the load is. The PWM switching frequency has to be…

Background Information Electricity is a form of energy resulting from the build-up of charged particles, either statically as an accumulation of charge or dynamically as a current (Oxford dictionary, 2015). The effect of electricity can be seen in play daily, whether through a simple light bulb, or a complex application such as providing energy to a power plant. It is often stated that electricity is the most versatile and easily controlled form of energy, and at the point of use it is…

material resists current, and is measured in Ohm-meters (Ω-m). Electrical resistance (R) is the opposite of the flow of electrons, or the passage of an electrical current. Electrical conductivity (σ) is the opposite of resistivity and is measured in Siemens (S). Electrical conductivity is defined as; the degree to which a specified material conducts electricity, calculated as the ratio of the current density in the material to the electric field which causes the flow of current. In this…

Introduction Current health issues are of great importance in society because there needs to be awareness on issues that are affecting the health of different populations around the world. It is important to know about current health issues so the issues could be addressed in order to keep health issues from spreading, and causing detrimental health effects. Understanding current health issues are also of great importance because it is necessary to learn why the health issues exist, how the…

other coil is in the car, called the inductor coil. The transmitting coil has an oscillating electric current, created by the ZVS driver circuit, flowing through the coil. This creates a magnetic field. Since the current that flows through the coil is oscillating it causes the the magnetic flux to change, which induces a current in the inductor coil when it passes over the transmitting coil. This current in the inductor coil is then transferred to the batteries. To ensure the car could charge…

devised the powerful alternating current (AC) model that significantly became the industry electric standard. AC is widely considered one of the many Tesla’s inventions. It is said that Tesla became an engineer with no single training at all, not exposed in the said field, but did it all himself, and realized the greatest- amazing results by virtue of his applications and industry use. He challenged one of his counterparts, Thomas Edison who also invented direct current (DC) power system…