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Questions tagged [mode]

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3
votes
1answer
56 views

How does placing cap between signal GND and earth GND solve common mode noise?

Thanks in advance for your time. I am reading several articles about differential mode noise and common mode noise. Among which I found the below 2 pretty instructive: https://www.murata.com/~/media/...
0
votes
1answer
31 views

What is the mode of a square waveguide \$TE_{11}\$ that is deformed into a circle?

I am trying to solve the 2013 paper set by ISRO for electrical engineers. I want some help to solve Question no 17 is correct. So I don't even know how to approach the problem, what will be the new ...
0
votes
0answers
182 views

Make a constant current source using a 700VDC supply at 4A

Goal: Charging a capacitor to 700V I want to charge a capacitor(any value) to 700V using an SMPS (buck converter.) to prevend inrush current. It's important that the system could charge the ...
0
votes
1answer
57 views

FDTDI FT4222H mode change [closed]

I have a UMFT4222EV, that is a development module for FT4222H. It has 2 jumpers to change the mode from 0 to 3. If I change the jumper settings unplug and plug it again to USB, it is enumarated as ...
0
votes
1answer
49 views

Single Button Power Switch and Mode Selector

I am currently creating an embedded project and would like to know what you all think is the best way to proceed. My setup at its most basic is an ATMEGA328P, a simple momentary pushbutton, a ...
2
votes
2answers
107 views

I need help identifying a component and how to check if itd faulty [closed]

I have a power supply that only works when the room is very warm. I narrowed it down to one green component with a 15 on top by heating and cooling. When this component is heated the psu works and ...
0
votes
1answer
119 views

Common mode and differential mode

I can't understand how to apply common mode and differential mode concepts. 1) I know that if I have two signals v1 and v2, I can always write them as: v1 = vcm + vd/2 v2 = vcm - vd/2 Example: v1=...
0
votes
1answer
261 views

How to build a three-phase common mode choke in Matlab simulink?

How to build a three-phase common mode choke in Matlab simulink? Should I use the mutual inductor?
0
votes
1answer
86 views

Homemade EEG Circuit Common mode feedback

https://sites.google.com/site/chipstein/home-page/eeg-with-an-arduino/assembling-the-arduino-eeg-circult Hi, I am currently building a DIY EEG circuit using the guide above. This guide is for when ...
0
votes
0answers
175 views

Common Mode Noise in Isolated System

I am working with an isolated system (battery powered with no GND connection), but am seeing common mode noise (40-85MHz) on cables during radiated EMI testing. Cable ferrites reduced levels ...
1
vote
2answers
721 views

Differential ADC and Common Mode Voltage

I am trying to understand a little bit more about common mode voltage. I am working with a particular MCU, the TMS320F28377S, and it has a common mode voltage requirement for its positive and negative ...
1
vote
1answer
242 views

MCP25625 LoopBack Mode Reponse

If anyone has worked with the CAN MCP25625 chip in the past I would like to know if in the loop back mode if we load and send data on the TXB0 buffer are we supposed to receive a RXB0 buffer ready and ...
0
votes
0answers
729 views

Inverse active mode of BJT

Here is my task: Find input voltage Vul and base voltage of T1, so that T1 enters full reverse active mode. Explain. Voltage base-emitter of BJT (when it conducts) is 0.7V, voltage base-emitter in ...
1
vote
1answer
688 views

Buck converter using P-MOSFET

I want to build a buck converter with p type mosfet. Specification: input voltage:24v Output voltage:12v I have chosen frequency 20khz,and my inductor value and capacitor value is 1mH and 20uF. Now ...
5
votes
4answers
5k views

photodiode current direction

After reading about some of the photodiode characteristics on the internet I got really confused with the photodiode working principle. I tried to search for them in google , got some definitions , ...
3
votes
1answer
246 views

Understanding Common-“mode”

From my understanding of mathematics, the mode is the value that appears the most in a set of data. As such, how does this translate to "common-mode" voltage? I understand how the cancelling out ...
-1
votes
1answer
45 views

Switching between three different operating modes with single switch [closed]

Let's assume i have a design with one LED and one piezo buzzer, powered by some power source (e.g. battery). The device should now support three different operating modes: Off: Neither the LED nor ...
10
votes
3answers
2k views

Can a relay failure mode be like that?

I was fixing my dishwasher control board, and diagnosed a bad relay. Its coil is still within specifications, but the relay will not close its contacts. It is an easy fix ok, but my question concerns ...
1
vote
1answer
258 views

voltage mode vs current mode motor

I wanted to ask question regarding voltage vs current mode for a feedback control motor . Will operating in current mode have any effect on our torque values provided that we are keeping the speed ...
1
vote
1answer
201 views

NMOS saturation mode: why is there no channel?

I have a question about the saturation mode. The cross-section of an NMOS transistor in saturation mode is usually drawn like this: But it seems to me that there can be no current from source to ...
1
vote
1answer
295 views

Leakage current during sleep mode?

This is an assignment question: A system is operating at 325VDC input, what is the required static leakage current during sleep mode in order to achieve Zero power? I know there may be a lot of ...
1
vote
1answer
802 views

How to get immediate state of DYP-ME003DD PIR sensor?

I am trying to detect movement for a project and have a DYP-ME003DD PIR sensor. It has 4 pins, +,-,CDS (I think this is what it says, it's hard to read) & OUT. When I connect it to my arduino and ...
1
vote
3answers
2k views

Why common-mode voltage is avarage of two input voltages in a differential amplifier?

I'm having hard time to understand the motivation behind the common mode voltage in differential amplifiers. I came to learn that common-mode voltage is chosen (v1+v2)/2 where v1 and v2 are input ...