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
Light Bulb
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
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
Triangle wave voltage source
C ampermeter
DC ampermeter
AC voltmeter
DC voltmeter
Two channe oscilloscope
SPST Switch
SPDT Switch
Voltage controlled switch
Current controlled switch
AND
NAND
OR
NOR
NOT
XOR
XNOR
JK flip-flop
7 Segment Display
D flip-flop
Relay
IC 555
Transformer
Graetz Circuit
What's in this version: (Updated : Feb 15, 2012)
Now you can change the background color,color of elements,color of wires...you can change everything!
SPICE engine is speed up 4x!!!
Download: 1.7Mb APK
http://www.mediafire.com/?0qd57q7db5hvsab
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