How to draw online schematic and make online simulations on Easyeda?   

Online schematic design and Online simulation a technology based on development of circuit design tools, cloud computing and cloud storage .It provides us an feasible way to design circuits online and stored files on the cloud sever. Let me introduce how to make online schematics and online simulation.For example, using Easyeda tool, assuming that you have logined in easyeda.com and create a new project.
1、Creating an online schematic
Click Main menu——>Document——>New——>Schematic:
Open the EasyEDA Libs on the left-side, choose components:
Firstly choose a voltage source. Click the ICON and Drag it to the Schematic Interface.

In the same way, choose a resistor ,a LED Light ,ground.
Connect the components and ground with wire in wire Tool.
　　

Then a very simple Schematic is created as followed.

2、Online simulations on Easyeda: I、Simple circuits with pre-defined parameters.
Put a voltage probe in the test point.

Then Run the document to execute online simulation
　　

Set the simulation parameters.The Maximum Timeste30us, Stop Time 10ms,Start Time 0.And click “Run” The the waveform will appear.
　　

         ——Waveform of Maximum Timestep 30us, Stop Time 10ms. II、Compare same circuits with different input voltage frequencies.
I can set different input voltage frequencies to compare the output simulation waveform.

　     　——Same circuit with input voltage of different frequencies.
The frequencies are respectively 1KHz, 5KHz, 10KHz. So we could compare the waveform of the Voltage in one diagram.
Run the document or “CRTL+R” to execute online simulation
The result is as followed.
　　

　　    ——Waveform of input voltage of different frequencies
III、Comparing circuits with same voltage input of some parameters and with adding a capacitor.
I tried to add a capacitor on the circuit parallel to the LED Light then make simulation .
And the value of the capacitor are respectively 1uf,4.7u f, 10uf .
Set the stop-time as 10ms, Maximum time step is 30us.
Some parameters about the voltage source are as show in the below Schematic .
As we could see , we could set the type of signal sourse , Peak-Peak amplitude, Frequency, Time Delay,Initial phase of waveform or other electronic and electrical parameters .
　　

　　   ——Meaning of parameters in voltage source .
The three circuits with parallel capacitor and Input voltages Setting Parameters are as followed.

Run the document to execute online simulation and the result is as followed .

 ——Simulation waveform for three circuits with same voltage of some parameters and different values of filtering capacitors .

I could change different parameters to realize different simulation results in one circuit.
Now I realize the powerfulness of online simulation function using Easyeda .I could also choose different models , set different parameters , and create much more complex circuits for simulation, especially circuits composed with discrete components.
For more reference, you could go to Help Topics——>Simulation eBook
　　

Or you could directly go to https://easyeda.com/Doc/Simulation-eBook/ and check the simulation functions and some examples for easyeda .