![]() ![]() You can download LTspice from below URL link. Thus, the voltage node change can be easily confirmed by the. Voltage value when the resistance value is changed The horizontal axis is the changed resistance value, and the vertical axis is the voltage value divided from the variable resistor. Here, the resistors R1 and R2 are regarded as variable resistors, and the divided node voltage is simulated when the DC voltage source is connected.Īs shown in the circuit diagram below, the resistor parameters are changed every 1kΩ between the variable 'R' and 1kΩ and 10kΩ using the. In this method, you can change the resistance value using the ".step" command and check the node voltage and current. Voltage divider using a variable resistorĪlthough we used the Tran analysis earlier, we will show you how to change the resistance value using the. Creating Variable Resistance Using OP Analysis With this method, you can change the resistance value in the Tran analysis (time analysis), so you can see the voltage and current changes as the resistance changes. Set the node voltage to the resistance parameterīy setting V (out)/I(R1) from "Add Trace" on the viewer of the simulation result as shown below, the resistance was variable with respect to the time axis and the simulation was executed. Run the simulation by applying voltage source V2 (here, 5V) to the Tran analysis setup and resistance.There’s a Mac version, but a lot of stuff is missing and is horrible. Go to Linear Technology’s homepage and download the Windows version of LTspice IV. The initial screen shows some preconfigured applications that are available. Set the value of resistor R1 to R = V(VR). Installing LTspice IV on Mac with WineBottler.In this case, the voltage source is set to PWL (0 1k 1 10k) in order to change the slope from 1k to 10k in 1 seconds. The voltage value of the voltage source V1 is assumed to be the resistance value.Prepare voltage source V1 and set the node voltage.The completed circuit diagram and preparation procedure are as follows. In this case, the resistance value is varied from 1k to 10k. However, it can be set by R =, and the resistance value can be changed by specifying the node voltage in. Normally, LTspice sets the resistance element parameter to a constant such as R = 10Ω. Set the resistance parameter with the voltage source This time, I will show you how to change the resistance. However, LTspice does not have a component element like a variable resistor that changes the resistance. When performing a circuit simulation, you may want to change the resistance value and check the movement of the node voltage and current. If you do not allow these cookies, you will experience reduced relevant content.In this article, let’s try making a variable resistor. They do not store directly personal information, but are based on uniquely identifying your browser and internet device. They may be used by Analog Devices to build a profile of your interests and show you relevant content on our site. ![]() Targeting Cookies: These cookies may be set through our site by Analog Devices and our service providers. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance. All information these cookies collect is aggregated and therefore anonymous. They help us to know which pages are the most and least popular and see how visitors move around the site. Performance Cookies: These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. If you do not allow these cookies then some or all of these services may not function properly. They may be set by us or by third party providers whose services we have added to our pages. Functional Cookies: These cookies enable the website to provide enhanced functionality and personalization. These cookies do not store any personally identifiable information. You can set your browser to block or alert you about these cookies, but some parts of the site will not then work. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. Strictly Necessary Cookies: (Always Active) These cookies are necessary for the website to function and cannot be switched off in our systems. After we finish updating our website, you will be able to set your cookie preferences. Analog Devices is in the process of updating our website.
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