Symbol:(q) Unit: Coulomb (C) The fundamental electric quantity is charge. Atoms are composed of charge carrying particles: electrons and protons, and neutral particles, neutrons. The smallest amount of charge that exists is carried by an electron and a proton. Charge in an electron: qe = -1.602×10-19 C Charge in a proton: p = 1.602×10-19 C
Monthly Archives: August 2021
Symbol: I Unit: Ampere Current moves through a circuit element “through a variable.” Current is the rate of flow of negatively-charged particles, called electrons, through a predetermined cross-sectional area in a conductor. Like water flow. Essentially, the flow of electrons in an electric circuit leads to the establishment of current. I(t) = dq/dt q: relatively […]
• Symbol: V • Unit: Volt Ø Potential difference across two terminals in a circuit “across variable.” Ø In order to move the charge from point A to point B, work needs to be done. Ø Like potential energy at a waterfall. Ø Let A be the lower potential/voltage terminal Ø Let B be the […]
DC Motor is a two-wire continuous rotation motor and the two wires are power and ground. When the supply is applied, a DC motor will start rotating until that power is detached. Most of the DC motors run at high revolutions per minute (RPM), examples are; fans being used in […]
The flow of electric current through a conductor experiences a certain amount of resistance The resistance, expressed in ohms (, named after George ohm), kilo-ohms (k, 1000), or mega-ohms (M, 106) is a measure of how much a resistor resists the flow of electricity. The magnitude of resistance is dictated by the electric properties of […]
Transistor is an active component and that is establishing in all over electronic circuits. They are used as amplifiers and switching apparatus. As the amplifiers, they are used in high and low level, frequency stages, oscillators, modulators, detectors and in any circuit need to perform a function. In digital circuits they are used as switches. […]
Switch is an electrical component which can make or break electrical circuit automatically or manually. Switch is mainly works with ON (open) and OFF (closed) mechanism. Numerous circuits hold switches that control how the circuit works or actuate different characteristics of the circuit. The classification of switches depends on the connection they make. Two vital […]
Breadboard Basics In the 1960s, wire-wrap technique is used for designing, building, and testing the electronic circuits and prototypes. Then, the larger boards (like wooden boards used for bread slicing) were used onto which the components (huge electronics elements) were connected using wires, pins or thumbtacks. Hence, these are called as breadboards but, technical name […]
Piezo buzzer is an electronic device commonly used to produce sound. Light weight, simple construction and low price make it usable in various applications like car/truck reversing indicator, computers, call bells etc. Piezo buzzer is based on the inverse principle of piezo electricity discovered in 1880 by Jacques and Pierre Curie. It is the phenomena of […]
Introduction to Motor Driver: L293D is a typical Motor driver or Motor Driver IC which allows DC motor to drive on either direction. L293D is a 16-pin IC which can control a set of two DC motors simultaneously in any direction. It means that you can control two DC motor with a single L293D IC. […]
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