Everyone

Phasor System

Marshmallow

Simulate circuits in your web-browser at: http://androidcircuitsolver.com/app.html
As I approached my senior year for my B.S. in Electrical Engineering, I wanted to create
something that most people hadn't created before, a circuit simulator! It was about the 
experience, the learning, and the the journey itself. I put together this application to 
package my knowledge in Electrical Engineering to some day help another student have
an easier time in their scholastic pursuits and in turn teach them about circuits.
Circuit Solver is far from perfect and there are lots of things that could be optimized.
It will however, simulate a majority of linear Circuits and a decent amount of smaller 
scale Non-Linear Circuits. If this app helps you in any way, i'd appreciate you spreading 
the word to help support my efforts, Thanks!
Think of Circuit Solver as an electronic circuit board, you drag your electrical components 
and place them on one at a time. You hook up some sources and you place some meters 
to read the values. If you need to analyze the waveform, grab some electrical leads and 
view them with an oscilloscope. There are many SPICE tools out there for PC such as 
Multisim, LTSpice, and PSpice. Circuit Solver doesn't compare to their raw power 
but it is optimized to run on mobile devices which makes it both portable and easily 
accessible to anyone in need of circuit solutions. Circuit Solver strives to verify Ohm's law, 
Kirchhoff's current and voltage laws by creating models that are both stable and efficient.
Make circuit solver your first step in circuit design!
DC Simulation:
To simulate the circuits, a matrix is defined based on all the components inside the circuit. 
The application solves the circuit using matrix manipulations such as LU-Decomposition 
and matrix inversion. DC Analysis is completed by writing a series of nodal equations. 
The equations are solved simultaneously to obtain a unique solution.
Transient Simulation:
In transient simulation we use numerical integration to determine the response of RLC 
circuits. Numerical integration allows for one to solve for discrete moments of time and 
in effect integrate their response. This application only supports the Backward Euler method.
Non Linear Simulation:
Non linear simulation is used for components such as diodes, LEDs, and transistors. 
The solver first guesses the approximate value of the solution and is refined through the 
use of a Newton-Raphson process. It utilizes linear approximation to predict the answer 
through successive iterations.
Built-in-Oscilloscope:
Visualize waveforms through the use of the built in oscilloscope. To use this feature 
simply link either a volt meter or an amp meter to the graph by tapping on them and 
pressing the eye, in order to view the wave.
Saving Schematics/Circuits:
Save your circuits on your device to use anywhere you go and at any time. You may 
also capture screen shots of the circuits you build. These screen shots are saved 
locally on your device.
List of Components:
+Resistor
+Capacitor
+Inductor
+Ideal Operational Amplifier
+NMOSFET
+PMOSFET
+PNP Bipolar Junction Transistor
+NPN Bipolar Junction Transistor
+AC Voltage Source
+AC Current Source
+DC Voltage Source
+DC Current Source
+Square Voltage Source
+Triangle Current Source
+Sawtooth Current Source
+Triangle Voltage Source
+Sawtooth Voltage Source
+Amp Meter
+Ohm Meter
+Volt Meter
+Diode
+Red LED
+Green LED
+Blue LED
+Yellow LED
+Orange LED
+Wire
+Voltage Controlled Voltage Source (VCVS)
+Voltage Controlled Current Source (VCCS)
+Current Controlled Current Source (CCCS)
+Current Controlled Voltage Source (CCVS)
+Switch (SPST)
+Switch (SPDT)
+Ground
+Transformer
+AND Gate
+OR Gate
+NOR Gate
+NAND Gate
+Inverter
+Potentiometer
+XOR Gate
+XNOR Gate
+Zener Diode
+Push Button (NC)
+Push Button (NO)

Circuit Solver: Simulator & Schematic Editor

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