Left hand Navigation panel > **EasyEDA Libs > Power Supply** Hover over Voltage Source Icon (next to Battery Icon). (Or Current Source(EasyEDA), below battery icon) Click on down arrow in lower right hand corner of voltage source icon > **Voltage Source(EasyEDA)**  Click on **Voltage Source(EasyEDA)** Click on Voltage Source(EasyEDA) Icon (tip text now says Voltage Source(EasyEDA)).  Click on schematic canvas to place Voltage Source(EasyEDA). Select voltage source on canvas. Edit user parameters in right hand **Properties** panel (if not already open then click on far right vertical blue strip to open).  Available parameters for Voltage Source(EasyEDA) and Current Source(EasyEDA): >Frequency: Freq(Hz); >Wavshape: Function > dropdown list > Sin/Cos/Square/Triangle/Square >Peak to Peak Amplitude: Amplitude(V) (Amplitude(A) for current source) >DC offset: Initial(V) (Initial(A) for current source) For more complex signal sources, select Voltage Source (Current Source) and see user parameters in **Properties** panel:  Some examples of these sources: <https://easyeda.com/file_view_Spice-Sinusoidal-Source_cw641ZlxT.htm> <https://easyeda.com/file_view_How-to-create-and-run-a-simulation_rVvROaUgs.htm> <https://easyeda.com/file_view_Using-Ctrl-R-to-run-a-simulation-directly_wuohbtLFX.htm> For more about the voltage and current sources available for simulation in EasyEDA see: <http://ngspice.sourceforge.net/docs/ngspice-manual.pdf#chapter.4>

Left hand Navigation panel > **EasyEDA Libs > Power Supply** Hover over Voltage Source Icon (next to Battery Icon). (Or Current Source(EasyEDA), below battery icon) Click on down arrow in lower right hand corner of voltage source icon > **Voltage Source(EasyEDA)**  Click on **Voltage Source(EasyEDA)** Click on Voltage Source(EasyEDA) Icon (tip text now says Voltage Source(EasyEDA)).  Click on schematic canvas to place Voltage Source(EasyEDA). Select voltage source on canvas. Edit user parameters in right hand **Properties** panel (if not already open then click on far right vertical blue strip to open).  Available parameters for Voltage Source(EasyEDA) and Current Source(EasyEDA): >Frequency: Freq(Hz); >Wavshape: Function > dropdown list > Sin/Cos/Square/Triangle/Square >Peak to Peak Amplitude: Amplitude(V) (Amplitude(A) for current source) >DC offset: Initial(V) (Initial(A) for current source) For more complex signal sources, select Voltage Source (Current Source) and see user parameters in **Properties** panel:  Some examples of these sources: <https://easyeda.com/file_view_Spice-Sinusoidal-Source_cw641ZlxT.htm> <https://easyeda.com/file_view_How-to-create-and-run-a-simulation_rVvROaUgs.htm> <https://easyeda.com/file_view_Using-Ctrl-R-to-run-a-simulation-directly_wuohbtLFX.htm> For more about the voltage and current sources available for simulation in EasyEDA see: <http://ngspice.sourceforge.net/docs/ngspice-manual.pdf#chapter.4>

Tutorial schematics have now been added to the [Spice Tutorials] to show how to use the Voltage and Current Sources to create the following types of signals: >[Sinusoidal (SIN or SINE)]; >>[More examples of Sinusoidal (SIN or SINE)]; >[Pulse (PULSE)]; >>[More examples of Pulse (PULSE)]; >[Exponential single pulse (EXP)]; >[Single Frequency Frequency Modulated (SFFM)]; >[Amplitude Modulated (AM)]; >[PieceWise Linear (PWL)]; [Spice Tutorials]:https://easyeda.com/project_view_Spice-tutorials_AysKEWevN.htm [Sinusoidal (SIN or SINE)]:https://easyeda.com/file_view_Spice-Sinusoidal-Source_cw641ZlxT.htm [More examples of Sinusoidal (SIN or SINE)]:https://easyeda.com/file_view_Spice-Sinusoidal-Source-more-examples_vLFyQ82kC.htm [Pulse (PULSE)]:https://easyeda.com/file_view_Spice-PULSE-Source_XPJDUcuoG.htm [More examples of Pulse (PULSE)]:https://easyeda.com/file_view_Spice-PULSE-Source-more-examples_oOICUcun3.htm [Exponential single pulse (EXP)]:https://easyeda.com/file_view_Spice-EXP-Source_cewqI0hzR.htm [Single Frequency Frequency Modulated (SFFM)]:https://easyeda.com/file_view_Spice-SFFM-Source_SwqI0izRL.htm [Amplitude Modulated (AM)]:https://easyeda.com/file_view_Spice-AM-Source_KGZNnJtdX.htm [PieceWise Linear (PWL)]:https://easyeda.com/file_view_Spice-PWL-Source_wxhbHBvN5.htm