Android Apps for Engginering Student

ElectroDroid

Description

Powerful collection of electronics tools and reference.A must for any enthusiastElectroDroid is a simple and powerful collection of electronics tools and reference; it includes:

• Resistor color code decoder (3-6 bands);
• Inductor color code decoder;
• Ohm’s law calculator;
• Reactance calculator;
• Voltage divider;
• Resistor ratio, value/series/parallel;
• Capacitor charge calculation;
• Operational amplifier;
• LED resistor calculator;
• LM317 calculator;
• Heat dissipation;
• Battery Life calculator;
• Inductor design tool;
• Voltage Drop calculator;
• PCB Trace Width calculator;
• Simple Filters calculator;
• NE555 astable calculator;
• Port pin-out (USB, Serial, Parallel, Ethernet, SCART, DVI, HDMI, S-Video, VGA, FireWire, Jack, XLR, RCA, DMX, ATX, Molex, EIDE, SATA);
• Resources (Resistivity table; Table of standard resistors and capacitors; Capacitor marking codes; AWG and SWG Wire size; Ampacity Table; Symbols and Abbreviations; Circuit Schematic Symbols; SI Units prefixes; Battery info; Boolean logic gate and algebra Theorems; 7400 info and pinout; ASCII code);
• Full support for EIA resistor series for all caluculators;
...and more to come!
If you like the program, please rate it.
You can also buy from the Market the "Donate" version of the app to support the developer and get rid of the ads.
For FAQ and full change-log, visit http://electrodroid.demisoft.it

Droid Tesla

 The only electronic circuit simulator(SPICE) for Android.

DroidTesla is a simple and powerful SPICE engine.
SPICE is an acronym for Simulation Program with Integrated Circuit Emphasis
and was inspired by the need to accurately model devices used in integrated circuit design.
DroidTesla simulator solves basic resistive circuits using Kirchoff’s Current Law (KCL)
in much the same way a student in a circuits class would,the simulator systematically forms a matrix in accordance
with KCL and then proceeds to solve for the unknown quantities using various algebraic
techniques such as Gaussian elimination and sparse matrix techniques.
For non-linear components, such as the diode and BJT ,DroidTesla engine searching for the approximate solution by making an initial guess at an answer
and then improving the solution with successive calculations built upon this guess.
This is called an iterative process.DroidTesla simulation uses the Newton-Raphson iterative algorithm
to solve circuits with non-linear I/V relationships.
For reactive elements(capacitors and inductors),the DroidTesla uses numeric integration methods to approximate the state of the reactive elements as a function of time.
DroidTesla offers the Trapezoidal(I'll add a GEAR method later) integration methods to approximate the state of the reactive elements.
Although for most circuits, both methods will provide almost identical results,
it is generally regarded that the Gear method is more stable, but trapezoidal method is faster and more accurate.
DroidTesla for now can simulate:
-Resistor
-Capacitor
-Inductor
-Potentiometer (available only in pro version)
-Light Bulb (available only in pro version)
-Ideal operational amplifier
-Bipolar junction transistor (NPN PNP)
-MOSFET N-channel depletion
-MOSFET N-channel enhancement
-MOSFET P-channel depletion
-MOSFET P-channel enhancement
-JFET N and P (available only in pro version)
-PN Diode
-PN Led diode
-PN Zener diode
-AC current source
-DC current source
-AC voltage source
-DC voltage(battery) source
-CCVS - current controlled voltage source
-CCCS - current controlled current source
-VCVS - voltage controlled voltage source
-VCCS - voltage controlled current source
-Square wave voltage source (available only in pro version)
-Triangle wave voltage source (available only in pro version)
-AC ampermeter
-DC ampermeter
-AC voltmeter
-DC voltmeter
-Two channe oscilloscope (available only in pro version)
-SPST Switch (available only in pro version)
-SPDT Switch (available only in pro version)
-Voltage controlled switch (available only in pro version)
-Current controlled switch (available only in pro version)
-AND (available only in pro version)
-NAND (available only in pro version)
-OR (available only in pro version)
-NOR (available only in pro version)
-NOT (available only in pro version)
-XOR (available only in pro version)
-XNOR (available only in pro version)
-JK flip-flop (available only in pro version)
-7 Segment Display (available only in pro version)
-IC 555 (available only in pro version)
-Transformer (available only in pro version)
-Graetz Circuit(available only in pro version)
If you are making an
oscillators you have to put a small initial value on some of the
reactive elements.(see the examples)