---| ELECTRO |---
CALCULATORS, HELPERS, FORMULAS

Brief for Eletronic Meaning

Electronics is the science that studies the behavior of electrons in different materials.

It is a sub-science of electrical engineering that uses elements such as transistors, diodes, integrated circuits, etc... .

Brief for Site Content

Place where it's possible to find some resources about eletronic like: calculators, helpers, formulas, SPICE software, CAD software etc... .

It will be posted the references about information from where it was retrived to post on this site at the bottom of the pages when possible or applicable.

Brief for On-line Eletronic Calculators

On-line calculators are to replace the offline version in excel.

They are on constantly review in order to improve quality and reliability, and come from quality sources.

Some are more complex than others, on the more complex, the base knowledge is applied to elaborate them.

In the case of amplifiers with transistors, (the complex ones) may happen to not be 100% quality, as they are the application of the knowledge acquired;

New ones are constantly sought models in order to improve them.

Brief for Eletronic Helpers

On this section it's possible to find reference tables, charts, like information about components / devices.

Brief for Off-line Eletronic Calculators

Off-line version of electronic calculators was the first to be created to be published on the site.

It tends to be replaced by the offline version, which is no longer subject to review, at least it is not expected;

It is highly advisable to use the online version when possible.

As hypotheses are converted into online models where you can also find formulas and respective references from which the information was acquired.

On-line Electronic Calculators

The attenuation of radio energy between two points

An inductor and capacitor for tunned and resonace

High-pass and Low-pass frequency with an inductor and capacitor

High-pass and Low-pass frequency with a resistor and a capacitor

High-pass, Low-pass, Band-pass and Band-stop frequency with a resistor, inductor and capacitor

An inductor as opposition to the alternate current flow

A capcitor as opposition to the alternate current flow

The logarithmic of any amplitude

The logarithmic of any power

Convert RMS to Volt-peak or Direct Current

Design an ideal transformer

The NPN transistor amplifier as common emmiter with base divider configuration

The NPN transistor amplifier as common emitter configuration

Design an inductor coil with or without core

Time constant of RC in series

Time constant of LR in series

Online Electronic Helpers

Ohms Law table with formulas

Size and aceptable current of the wires

A chart of the path through hole (PTH) resistors colors

A chart of path through hole (PTH) inductors color

Hand made Iron III Chloride

Off-line Eletronic Calculators

1. Coulomb;
2. Farad;
3. Voltage Ripple Capacitor;
4. VA (volt-amper);
5. Decibel;
6. RF Free-space Path Loss;
7. Volt Amper to Farad;
8. Resistor Equivalence;
9. AC Power Factor;
10. AC Inductive Reactance X(L);
11. AC Capacitive Reactance X(C);
12. AC Voltage Phase Shift;
13. AC Impedance;
14. Back EMF of Inductor;
15. Inductor Stored Energy;
16. Coupling Capacitor;
17. RMS to DC Converter;
18. Coil Design;
19. Ideal Transformer;
20. Mutual inductance;
21. Sinusoidal Waveform;
22. Passive RC Filter;
23. Passive LC Filter;
24. Varicap Junction Capacitance;
25. RC Charge Time;
26. RL Charge Time;
27. LC Resonance Frequency;
28. AVR PWM;
29. Maximum Power Transfer;
30. Kirchhoff MATRIX;
31. Thévenin`s theorem;
32. Rect. Conductor Magnetic Field;
33. AWG;
34. Colpitts Oscilator;
35. NPN Common Emitter;
36. NPN Common emitter;
37. NE555 Astable;
38. Thermal Resistance;
39. Thermal Noise;
40. Heat Sink Calculator;
41. Buck Converter Power Dissipated.

SPICE Software

"SPICE is open-source software that simulates the operating conditions of analog circuits. It is short for 'Simulation Program with Integrated Circuit Emphasis'."

Free Software: LTSpice; QSpice.

Trial Software: MultiSim; Proteus "MCU Simulation".

CAD Software

Computer-Aided-Design for PCB (print circuit board) Design.

Free Software: ----

Trial Software: Autodesk Egale

KKMoon, FeelElec, FeelTech - FY6900

Signal generator control software.