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Hi, I am trying to simulate an oscillator using 7404 inverters in OrCAD. However, I cannot get any oscillation with any combination of RC value that I use. Can someone check my schematic? Thanks.
Ok I understand now. Essentially, the current though the pmos channel produces the source voltage at the bottom pmos. Could an nmos be used instead if it just providing resistance? What is the name of the MOSFET configuration when the S/D are shorted like that?
It is actually used as a level shifter. However I don't understand the S/D connected PMOS aspect of it. Why not just feed the lower PMOS current directly?
Hi, thank you. I am not sure I understand what yuo ae saying. I don't really know what it is called, whatever the name for it is, I don't understand its operation.
Thank you very much for your reply. Yes it is a DC signal, and it is 2 pmos. The whole thing is unclear to me, can you please give me a brief analysis on it? Thanks for the help.
Hi, I have come across an amplifier which I don't understand how it works. It is using 2 pmos transistors. It does not look like any of the source followers I have seen. Can someone explain the attached cicuit to me? Thank you.
Hello. I was wondering if someone can explain to me what the difference is between transient current and DC current. What are the applications of each? When is it advantageous to know one over the other? Specifically, I am talking about simulating using Cadence. Any info would be great...
Hi everyone. I was wondering what the best way to calculate the power consumption of a circuit designed in Cadence is. In my circuit, VDD is 3V. Once I run the simulation, I do a DC analysis of the circuit then go to results-->annotate-->DC operating points. This shows the current flowing...
Hi guys. I have a question on a schematic that I am looking at. It is used as a variable current source, however I am just a little confused on how exactly it is working. It is attached. From what I gather, the 2 bits control how much voltage is present on the gate of p-MOS2 via potential...
That is what I do. Attached are my paramaters. I then click outputs--> to be plotted, then select a node, like usual. Plot still comes up blank with the error.[/img]
Hi everyone. I am trying to plot the current in my simulation, however when I click on the node to be plotted I get the following error and the plot comes up blank.
*Error* Trying to plot expression <IT("/I8/MINUS" "/share/cadence_simulations/rjc03001/simulation/3_Sensor_System/...
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