# NTNUJAVA Virtual Physics LaboratoryEnjoy the fun of physics with simulations! Backup site http://enjoy.phy.ntnu.edu.tw/ntnujava/

## JDK1.0.2 simulations (1996-2001) => Electromagnetics => Topic started by: Fu-Kwun Hwang on January 29, 2004, 09:19:08 pm

 Title: RLC circuit simulation (DC Voltage source) Post by: Fu-Kwun Hwang on January 29, 2004, 09:19:08 pm This is a RLC series circuit simulation (with DC Voltage source) java applet.1. R is the resistor where $V_R= I R$,2. L is the inductor where $V_L=L\frac{dI}{dt}$3. C is the capacitor where $V_c=Q/C= \frac{1}{C} \int I dt$If the DV voltage source is V, then $V=V_R+V_L+V_C$ 1. SetupThere are 4 green circles represent nodes for the circuit.You can put one of the selected element into the circuit at a time.There are 5 circuit elements: Voltage source , Resistor, Inductor, Capacitor and connector.LEFT CLICK one of the circuit elements (within the area) to select it.Enter new value into the text Field will change its parameter.Then, LEFT CLICK between any two nodes (near gray line) to put the element into the circuit. e.g. If the circuit is a closed circuit, the voltage at each node will be shown as the height relative to the gray circle(in bottom left corner). e.g. There is no charge stored in the capacitor initially, however, you can drag one node of the capacitor (up/down) to charge it.If your circuit includes at least one voltage source and one resistor, it will change into simulation mode.  e.g. R-L-C circuit setting. 2. Simulation modePress Start to start the simulation.The node will move up and down as voltage changes with time.RIGHT CLICK will suspend the animation, click it again to resume.Click the area above the DC voltage source change the time scale: Left click to increase the speed, right click to slow down.The elapsed time is represented as t= a*b us (means a*b micro seconds).Voltage as function of time V(t) at each node are shown as red dots. Each dot = b micro seconds.If you want to know the current I(t) of the circuit, check out the voltage variation of any one of the resistors.Press Ready to reset the time back to t=0.3. Press Reset to remove all the elements from the circuit, reset to defaults. You can change circuit elements at any time. (step 1) LEFT CLICK to select element and put it into the circuit.You can try many different type of simulation with this java applet. V-R, V-R-C, V-R-L, V-R-L-C , V-R-C-R .... Just try it and have a nice day! Title: Re: RLC circuit simulation (DC Voltage source) Post by: stevfisica on November 22, 2004, 05:55:38 am :idea: Title: Re: RLC circuit simulation (DC Voltage source) Post by: MikeSmith on February 16, 2009, 01:21:16 pm [noeqn]If you use a source amplitude of 1 V, then values of the voltage across the inductor and its ... of a series RLC circuit in terms of $L$ and $C$ . Simulation .... Your supply has a 7806, so the DC output voltage should be close to 6 V.Nice Website for students.-*- Title: Re: RLC circuit simulation (DC Voltage source) Post by: Dragonknight768 on May 04, 2009, 10:34:18 am what is this terms $L$ and $C$?I am just a little confused to it..,-*- Title: Re: RLC circuit simulation (DC Voltage source) Post by: Fu-Kwun Hwang on June 12, 2009, 02:48:50 pm The following is flash movie shows demo for the above simulation.http://www.phy.ntnu.edu.tw/ntnujava/swf/rlcdc.swf Title: Re: RLC circuit simulation (DC Voltage source) Post by: ender on August 29, 2009, 12:44:15 am Hi, the applet looks great! But for some reason after I put all the elements(vsrc, resistor, etc), I do not see a start button to press?can you pls. help? Title: Re: RLC circuit simulation (DC Voltage source) Post by: Fu-Kwun Hwang on August 29, 2009, 08:58:01 am The button next to reset button is labeled as "ready". You need to add four elements into the circuit to complete the loop to find the label change to "start". Title: Re: RLC circuit simulation (DC Voltage source) Post by: MikeSmith on February 03, 2010, 07:03:04 pm Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics! -*- Title: Re: RLC circuit simulation (DC Voltage source) Post by: markweee on April 20, 2010, 03:23:38 pm If you can not find physics related simulations you want. Post it here, describe the requirement and the design of the simulation in detail. And we will try to create one for you for free! We need to know the purpose for the simulation and the targeted user. Normally, we will start to create it within one week as soon as we have enough information to create the simulation.-*-