How to configure voltage and current sources for AC and DC is explained in the Simulation Tutorial.

Hi, thanks a lot for the answer. I have anoter question: why i find the voltage/current simulation EElib key only in the simulation mode?

@gdisimone, Because from version 6.2 EELlib is for simulatable components only.

@gdisimone, To clarify: From version 6.2 EELlib shows a small selection of all the available **simulatable** components when working in the simulation (Sim) mode:  In Standard (Std) mode, the EELib shows a small selection of **all** the components available from the library:  More simulatable components can be found as described in the Simulation Tutorial.  * Please note that, at present, components in the **Spice gates** section will not work in simulation: they are currently under reconstruction for LTspice compatibility. Please report any other components that do not appear to work in simulation directly to my username @easyeda.com Thanks.

Are you saying that from version 6.2, we cannot creat a circuit with AC VOLTAGE?

No. Please read the Simulation Tutorial

There are several pre-configured time domain sources in the Sim EELib as well as a "Signal Generator":  The [Simulation Tutorial](https://docs.easyeda.com/en/Simulation/Headings/index.html) describes how to configure AC Voltage and Current Sources for AC Analysis in the Frequency Domain. **Please note however that references in this tutorial to ngspice should be interpreted as references to the Help files in a locally installed copy of LTspiceXVII or here: ** [**http://ltwiki\.org/index\.php?title=LTspice\_Annotated\_and\_Expanded\_Help\***](http://ltwiki.org/index.php?title=LTspice_Annotated_and_Expanded_Help*)