A Light Emitting Diode that emits one color when forward biased and another color when reverse biased is called a multicolor RGB LED. Related Article: Working of Light Emitting Diode (LED) One commonly used schematic symbol for these LEDs is shown below. Working of Multicolor RGB LEDs Multicolor RGB LEDs actually contain two PN junctions that are … [Read more...] about How Multicolor RGB (Red Green Yellow) LEDs Work?
A light-emitting diode (LED) is a diode that gives off visible light when forward biased. Light-emitting diodes are not made from silicon or germanium but are made by using elements like gallium, phosphorus and arsenic. By varying the quantities of these elements, it is possible to produce light of different wavelengths with colors that include red, green, yellow and … [Read more...] about Working of Light Emitting Diode (LED)
A fuse protects an electrical circuit or device from excessive current when a metal element inside it melts to create an open circuit. In this post, we will look in to the construction and working of Fuse and the properties of fuse material. With the exception of resettable fuses, a fuse must be discarded and replaced after it has fulfilled its function. When high current … [Read more...] about What is a FUSE and How it Works?
Rechargeable batteries are everywhere these days: cordless tools, laptop computers, cordless phones, and cell phones, just to name a few. Rechargeable batteries for use with consumer electronic products are of four basic types: Nickel cadmium (Ni-Cd), Nickel metal hydride (Ni-MH) Lithium-ion (Li-Ion). Lithium polymer (Li-Po) Although these four types of batteries … [Read more...] about Different Types of Rechargeable Batteries
An analog device is one in which the output or display is a continuous function of time and bears a constant relation to its input. The analog instruments ﬁnd extensive use in present-day applications although digital instruments are increasing in number and applications. The areas of application which are common to both analog and digital instruments are fairly limited at … [Read more...] about Three Types of Analog Instruments