I'm setting up a circuit to simulate a RLC filter. As explained here([https://docs.easyeda.com/en/Simulation/Chapter4-Introduction-to-using-a-simulator/index.html#The-ground-node-MUST-NOT-have-a-Voltage-Probe-attached-to-it](https://docs.easyeda.com/en/Simulation/Chapter4-Introduction-to-using-a-simulator/index.html#The-ground-node-MUST-NOT-have-a-Voltage-Probe-attached-to-it)), my circuit should have a power and/or a signal source. When I'm in the circuit editor, where do I find the power source so I can add them to my circuit? * I can't find them in the "Commonly library". * In the "Library", selecting "Search Engine = EasyEDA", "Type = Spice Symbol" and "Classes = System", I can locate a promising section named "Power Sources / Spice Sources". In it there is a VOLTAGE_SOURCE. When I place it in my circuit, the LTSpice netlist export stops complaining and works. However, when selecting this component, it shows no section "Voltage Source Settings" where I can configure the source. My question is: where do I find the nice power sources that are exemplified here: [https://easyeda.com/editor#mode=sim,id=33ceeaef756d4e4d81aef87c9b9f25ea](https://easyeda.com/editor#mode=sim,id=33ceeaef756d4e4d81aef87c9b9f25ea)<br> <br> Best regards,    Jean-Michel Gonet