different types of solar cells. Reflections can be minimized in certain wavelengths thus result in higher overall efficiency. In order to understand the working principle behind antireflection coatings, we must first understand the nature of light and it’s interaction with other materials. It is of utmost importance for solar cell designers and researchers to understand both the particle and wave nature of light in order to design a high efficiency solar cell. The Sun’s energy which radiates into the Earth’s
Our ultrasonic transducers have piezoelectric crystals which resonate to a required frequency and convert electric energy into acoustic energy and vice versa. The below illustration shows how sound waves, transmitted in a conical shape, are reflected from a target back to the transducer. Accordingly, an output signal is produced to perform some kind of indicating or control function
Electrical engineering, a fascinating field, is at the forefront of developing new technologies for a number of industries including transportation, healthcare, construction, & robotics. Also manage the planets energy needs by developing reliable, green & renewable energy while reducing our dependency on fossil fuels, and replace the aging & inefficient power distribution systems with modern controlled and revolutionary smart grid. That means boundless areas for contribution and excellence at any
semiconductor cost is not considerably increased when compared with the two level cases. On the other hand, each active semiconductor added requires associated gate drive circuitry and adds further complication to the converter mechanical layout. Another disadvantage which is to be mention is that the small voltage steps are typically formed by isolated voltage sources or a bank of
Nickel coating is used extensively for decorative, engineering and electroforming purposes because the appearance and properties of electrodeposited nickel can be varied over wide ranges by controlling the composition and the operating parameters of the electrolyte. Decorative applications account for about 80% of the nickel consumed in plating and 20% is consumed for engineering and electroforming purposes [1]. Compared to plain coatings, composite coatings have improved physical and electrochemical
Machine Shop Conventional vs. Non-conventional Machines Machining is any of various processes in which a piece of raw material is cut into a desired final shape and size by a controlled material-removal process. Conventional Machines: - Machines that are driven or operated with the help of human resource is termed as conventional machines. Conventional machines requires direct contact of tool and work piece. Non-conventional Machines: - Machines which are fully automated in which there is no need