![]() crutschow Joined 31,323 7 SamR said: I don't get the probe, just a hand to change values. You should get Isc 1.765mA for a short circuit current. To simulate a short circuit place a small resistor across node A and node B. ![]() To plot device power, hold down ALT key and Left-Click the device. You can how ever always find the open circuit voltage Voc and short circuit current Isc by simulating each. To choose BBEdit as the 'External Editor'. Use the MacSpice preferences panel: MacSpice > Preferences. By default, MacSpice will assume that any filename that does not specify an absolute path refers to files in this folder. If you want a scatter plot of first two principal component scores, you can do it using ggplot. To plot the voltage across a device, left-click and hold on one node, while holding move to the other node, release the button. The first time you launch MacSpice it will create a working directory inside your Documents folder. So the following codes should be more appropriate in your case. Start the inductor current or capacitor voltage with zero initial condition. However, I think it makes more sense to do PCA on x rather than xymatrix that includes the target y. It's easy to generate a variable that's proportional to time: the current through an inductor connected to a constant voltage source, or the voltage across a capacitor connected to a constant current source. Ggparcoord(data=pc_label, columns=1:2, groupColumn=ncol(pc_label)) # Plot the first two principal component scores of each samples # Principal components score and group label 'y' It seems that you cannot plot current for circuit elements directly and will therefore have to make use of a series 0V source to display a graph of current vs time in that branch. More importantly is there a configuration file not setup properly? thoughts?Īny direction is greatly appreciate.If I understand your question correctly, ggparcoord in Gally package would help you. My circuit designs should be regarded as experimental. Isn't there a default output without needing a. One way is to do a Transient analysis, plot voltage across a component of interest, right-click the time axis of the plot, and edit the 'Quantity plotted' to read ' i (x) ' instead of 'time', where x is the component. Note: No ".plot", ".print", or ".fourier" lines no simulations run print line (I thought I've seen others with default output): I've tried many different circuits and can never get ngspice to output current for my sources (I have created 0 voltage sources near resistances on parallel circuits as well). I've also tried defining my source different as: the graphing commands in MacSpice Professional to look at any current or voltage in. As the circuit creator you need to know the expected direction of the current flow. My voltage outputs are correct per hand calcs so I know ngspice is calculating the right current. PLOT to obtain two DC and two AC voltages from a circuit is. One method to set the plot current direction thru a component, is to rotate the component 180deg', Cntrl + R. Starting with a simple series circuit with the intent to print voltage at each resistor and current at my source I loaded the following netlist: I'm starting to wonder if this is an install / configuration issue? control dispose of any 'save' statements from previous runs delete all tran 0.1ms 20ms plot v (1) v (2) plot -i (vin). It is 10log () if the argument has units like power, and 20log () if the units are voltage, current, resistance, etc. I googled and tried other posts this but nothing seems to work. voltage plot for the transient data Voltage Divider - Sine vin 1 0 sin (0.0V 1.0V 50) ac 1.0 dc 0.0 r1 1 2 1.0K r2 2 0 1.0k. ![]() I can't output current for any circuits! I've tried passing the file with -r option and multiple circuits. I'm reading an EE book that references SPICE so to follow along on my linux machine I installed ngspice. ![]()
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