The Unit Conversion page provides a solution for engineers, translators, and for anyone whose activities require working with quantities measured in different units.Inductors do this by generating a self-induced emf within itself as a result of their changing magnetic field. This online unit converter allows quick and accurate conversion between many units of measure, from one system to another. In this part of the Unit Converter, we present a group of calculators related to various aspects of electrical engineering, electronics, and RF engineering. Examples of such devices are mobile phones, routers, computers, two-way radios, credit cards, satellite receivers, televisions, and other equipment that transmits and receive radio waves. Radio-frequency engineering (RF engineering) is a field of engineering that deals with devices that transmit or receive radio waves in the radio frequency spectrum (3 kHz to 300 GHz). Internal Resistance of a Battery CalculatorĮlectrical, RF and Electronics CalculatorsĮlectronics is a branch of physics, electrical engineering, and technology concerned with the design and use of electrical circuits containing active electrical components (diodes, transistors, and integrated circuits) and passive electrical components (resistors, inductors, and capacitors) and connections between them. Total Harmonic Distortion (THD) Calculator Three-Phase AC Power Calculator (Balanced Load) Radar Horizon and Target Visibility Calculator Radar Maximum Unambiguous Range and Pulse Repetition Frequency Calculator Calculation of Current-Limiting Resistors for a Single LED and LED Arrays NFC/RFID Planar Spiral Coil Inductance Calculator Parallel RLC Circuit Impedance Calculator
Air core inductor calculator output voltage series#
Mutual Inductance Calculator - Inductances in Series Mutual Inductance Calculator - Parallel Inductances Resistor–Capacitor (RC) Circuit Calculator You may be interested in other calculators in the Electrical, RF and Electronics Calculators group: In another calculator, we will look at non-ideal inductors with resistive coils, which can be described by the equivalent circuit of an inductor in series with a resistance and examine its time constant. The real-world inductors are of course non-ideal and real inductors display resistive effects and capacitive effects. In this calculator, we considered only ideal inductors. Because inductors are placed in this way, the coupling coefficient k ≈ 1. Without this stacking, it would be impossible to create large inductances with planar technology.
Several metal layers with spiral coils are placed on top of each other and connected in series to add their inductances to create one large inductor. For this purpose, a multi-layer stacked spiral inductor configuration is used. Why connect several inductors in series if it is possible to make one large inductor? Here is one example.Ĭombining several spiral inductors is used in microelectronics to realize very large inductances per unit area in an integrated circuit. On-chip multilayer stacked spiral inductor and its simplified equivalent circuit Note also that for a group containing any number of inductors connected in parallel, the equivalent inductance is always less than the smallest inductor in the group of inductors, and adding any new inductor will always decrease the equivalent inductance of the group.
Note that the formula for calculating the total inductance of several inductors connected in parallel is the same as used for calculating the resistance of a group of resistors connected in parallel.
If there are n equal inductors L connected in parallel, then the equivalent inductance is Note also that it is impossible to have a perfectly zero-inductance circuit.įor only two inductors connected in parallel: Imagine a very short straight wire shunting the coil - this will be almost zero inductance. Note that if one or several of the inductances are zero, the value of L eq tends to zero. For example, three inductors, 10, 15 and 20 μH connected in parallel will produce: This formula for L eq is used for the calculation in this calculator. The total inductance L eq of three non-coupled (with a large distance between them) inductors connected in parallel is equal to the reciprocal of the sum of the reciprocals of their inductances: According to Kirchhoff’s current law, the total current I is the sum of the currents flowing through individual inductors: It is usually denoted by the symbol L in honor of a Russian physicist Heinrich Lenz (Эмилий Христианович Ленц).īy definition of the self-inductance, the voltage v(t) and the current i(t) through the inductor are connected asĪll inductors connected in parallel have the same voltage drop V across them. Inductance characterizes the ability of an electrical conductor to convert changes in electric current into changes in electrical potential in both this conductor (self-inductance) and in any nearby conductors (mutual inductance).