"Safe" value of Vgs in sub-threshold design (4.5nUT < Vgs - Vth < -2nUT)?

Hello, Usually, by biasing Vgs < Vthreshold of MOSFET, we can push MOS into sub-threshold region. My curious question is: How much value of Vgs is "good" as a "rule of thumb"? I have referenced...

11 December 2019 1,858 0 View

Voltage-mode controlled DC-DC Converter: Ramp or triangular generator for PWM?

"A time-varying piece-wise linear waveform is necessary for PWM operation. In the case of voltage mode control, a ramp signal is generated inside the controller and used for the time-varying...

08 September 2017 8,063 8 View

Load modelling: Using Resistor or current sink as a load?

08 September 2017 5,346 0 View

Surges in dead-time of PMOS and NMOS power switches (Buck converter) - How to solve it?

There are surges in the current of PMOS and NMOS during dead-time (as in the attached figure). I have several questions: - First, is it serious or bad in my design? And if it is not good, how to...

05 June 2017 2,175 3 View

Should the inductor and capacitor should be measured before simulating DC-DC converter in Cadence?

05 June 2017 7,520 4 View

Any opinion about the choise of opamp topology used in design of LDOs?

Dear all, In design of Low Drop-out Voltage Regulator (LDO), what type of opamp should be used? I usually design LDO with folded cascode opamp and it seems to get matched with the...

09 October 2016 4,002 3 View

Method of sizing power MOS switches in Power converter IC (integrated switches)?

In the design of power converter ICs, sometimes the power switches are not given by the PDK. That means we have to design the power transistors as the switches (NMOS and PMOS). Since the power...

01 January 1970 6,636 8 View

What are hot trends of CMOS analog integrated research topics in near future

I am curious what could be hot research/study topics in the fields related to CMOS integrated circuits (both analog and digital). My specific questions should be: 1. At device level: - What are...

01 January 1970 721 6 View

"Local feedback" concept in Opamp and OTA

Dear, In compensation networks, we use OTA and Opamp as EA in DC-DC converters (also another applications). The different between them is the physical connection of the compensation network with...

01 January 1970 2,134 2 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

I got 02 moderator values defining Johnson-Neyman significance regions. Is it an error?

Hi everyone, I am conducting research for my Master's thesis. I am using PROCESS by Johnson-Neyman to analyze my Moderator model. I test the relationship between Public Service Motivation and...

03 March 2021 2,350 2 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

Is there a powerful system for the security of the systems distributed on IoT systems?

Is there a powerful system for the security of the systems distributed on IoT systems?

02 March 2021 3,858 10 View

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View

Can NFL theorem be valid in infinite search space in ML?

NFL theorem is valid for algorithms training in fixed training set. However, the general characteristic of algorithms in expanded or open dataset has not been proved yet. Could you show your...

01 March 2021 1,189 3 View

Does anyone know how to plot my station to a section plot on Ocean Data View (ODV)?

I made a vertical section plot with WOA .nc file on ODV, and now I want to plot my stations (csv. file) in it. Does anyone know how to import my points to the section? They are two different...

01 March 2021 3,610 1 View