Mindblown: a blog about philosophy.
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Open Source
Dart is an open-source programming language, which means it is freely available. It is developed by Google, approved by the ECMA standard, and comes with a BSD license.
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Dart Features
The Dart is an object-oriented, open-source programming language which contains many useful features. It is the new programming language and supports an extensive range of programming utilities such as interface, collections, classes, dynamic and optional typing. It is developed for the server as well as the browser. Below is the list of the important Dart…
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Coulomb’s Law
Coulomb’s law formula Coulomb’s law calculates the electric force F in newtons (N) between two electric charges q1 and q2 in coulombs (C) with a distance of r in meters (m): F is the force on q1 and q2 measured in newtons (N). k is Coulomb’s constant k = 8.988×109 N⋅m2/C2 q1 is the first charge in coulombs (C). q2 is the second charge in coulombs (C). r is the distance between the 2 charges…
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Kirchhoff’s Laws
Kirchhoff’s Current Law (KCL) This is Kirchhoff’s first law. The sum of all currents that enter an electrical circuit junction is 0. The currents enter the junction have positive sign and the currents that leave the junction have a negative sign: Another way to look at this law is that the sum of currents that…
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Voltage Divider
Voltage divider rule for DC circuit For a DC circuit with constant voltage source VT and resistors in series, the voltage drop Vi in resistor Ri is given by the formula: Vi – voltage drop in resistor Ri in volts [V]. VT – the equivalent voltage source or voltage drop in volts [V]. Ri – resistance of resistor Ri in ohms [Ω]. R1 – resistance…
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Ohm’s Law
Ohm’s law shows a linear relationship between the voltage and the current in an electrical circuit. The resistor’s voltage drop and resistance set the DC current flow through the resistor. With water flow analogy we can imagine the electric current as water current through pipe, the resistor as a thin pipe that limits the water…
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Transistor Symbols
Transistor schematic symbols of electronic circuit – NPN, PNP, Darlington, JFET-N, JFET-P, NMOS, PMOS. Table of transistor symbols Symbol Name Description NPN Bipolar Transistor Allows current flow when high potential at base (middle) PNP Bipolar Transistor Allows current flow when low potential at base (middle) Darlington Transistor Made from 2 bipolar transistors. Has total gain…
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Diode Symbols
Diode schematic symbols of electronic circuit – Diode, LED, Zener diode, Schottky diode, photodiode, … Left – Anode, Right – Cathode. Symbol Name Description Diode Diode allows current flow in one direction only (left to right). Zener Diode Allows current flow in one direction, but also can flow in the reverse direction when above breakdown…
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Capacitor Symbols
Capacitor schematic symbols – capacitor, polarized capacitor, variable capacitor. Table of capacitor symbols Symbol Name Description Capacitor Capacitor is used to store electric charge. It acts as short circuit with AC and open circuit with DC. Capacitor Polarized Capacitor Electrolytic capacitor Polarized Capacitor Electrolytic capacitor Variable Capacitor Adjustable capacitance
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Resistor Symbols
Resistor symbols of electrical & electronic circuit diagram – resistor, potentiometer, variable resistor. Table of resistor symbols Resistor (IEEE) Resistor reduces the current flow. Resistor (IEC) Potentiometer (IEEE) Adjustable resistor – has 3 terminals. Potentiometer (IEC) Variable Resistor / Rheostat (IEEE) Adjustable resistor – has 2 terminals. Variable Resistor / Rheostat (IEC) Trimmer Resistor Preset…
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