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Electrical Engineering : Recent Questions and Answers (Page 56)

Find answers to your questions about Electrical Engineering or help others by answering their Electrical Engineering questions.

Isolated DC-DC Converter screws up ADC

I am developing the automated test system depicted in the following picture. The system receive commands and returns result data via...

Asked on 12/22/2020 by Fab

1 answer

how to deal with ACK and DATA one after the other in I2C efr32fg14

in I2C We have the IF register to catch the ACK from the slave ,And we have I2C0->RXDATA to catch the recieved data .But as shown in the...

Asked on 12/21/2020 by rocko445

0 answer

LED indicators on Ethernet cables

I'm wondering why LED indicators are not used on patch panels and on keystone jacks.I already know that usual LED signals are derived from a 16 bits pulsetrain used...

Asked on 12/21/2020 by user3435121

2 answer

High efficiency pwm current limiter for charging supercap from alkaline battery

I'm designing device which uses two alkaline C-batteries in series as power source, and sends SMS messages using SIM800. On average 1 message per day is sent. Goal is to...

Asked on 12/21/2020 by juha.mattila

0 answer

Arduino Mega output at 2.5 Volts and how to pull-down?

In my arduino project I want to connect the output of first arduino to an input of a second Arduino. Unfortunately on trying I found that the second Arduino input...

Asked on 12/21/2020 by tibu.v

1 answer

Sending SPI signals to the Flash Memory through verilog FPGA controller, but not receiving anything from it, why does it happens?

As a school project I want to write a very simple controller for a flash memory in a IC board. The FPGA chip is Altera 5CEFA4F23C8 and the flash is...

Asked on 12/21/2020 by user176257

1 answer

Adjusting the offset of the output of a UA741CN opamp

I've the following schematic for a UA741CN when there is NO offset: simulate this circuit – Schematic created using CircuitLab Question: Why do we...

Asked on 12/20/2020 by Looper

2 answer

15kV high voltage pulse generator circuit - how to have digital control?

First of all I'm fairly new to making a more complicated circuit. I'm trying to make a PCB with an ATmega328PB chip on it. With that chip I want to...

Asked on 12/20/2020 by Remco van Gorsel

3 answer

EMI consideration for Microwave Sensor Module

I'm using Microwave Solutions MDU1720 datasheet with recommendation that The length of leads connecting the MDU to the signal processing circuitry must be minimised, to reduce pick...

Asked on 12/20/2020 by robg

0 answer

Is unplugging computer power cable from PSU the same as electricity outage?

I am not sure if they are the same, but something puzzling just happened. My dell precision workstation 2007 has been fine ever since, with many, many power outages over...

Asked on 12/19/2020 by simonv

2 answer

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