Hi kn8Fury, Welcome to EasyEDA. EasyEDA does not have a direct equivalent of the PSpice Time Controlled switch. However, this example should give you some ideas for ways to implement the same functions in EasyEDA: <https://easyeda.com/file_view_Controlling-EasyEDA-switches_hRL3WewOI.htm> These examples give a bit of background to the controlled resistor technique: <https://easyeda.com/file_view_Voltage-or-current-controlled-resistors_nztLFXewO.htm> <https://easyeda.com/file_view_Arbitrary-voltage-controlled-switch_0OHBTb5nF.htm>