Author: Abby

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Connecting 24V 2A load to 24V 20A PSU PS/1AC/24DC/20(Phoenix contacts)

tried google but did not get clear answer so here i am... I have two pumps with damaged power adapters rated 24V 2A each. I have a Phoenix Contacts PSU PS/1AC/24DC/20, which is rated 24V 20A...

6 mins ago 2
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RMS value of fundamental harmonic vs RMS of third harmonic

If we have a periodic signal (square wave) with amplitude of 100V. Then what would the RMS value of the fundamental harmonic be compared to the RMS value of the third harmonic? After some...

16 mins ago 2
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Kali Linux on portable SSD with data persistence

I need to setup a portable kali-linux environment that I can boot on any available computer. I don't want to use a virtual environment because I would need to download VMware on the host computer,...

30 mins ago 2
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Swapping "Good" and "Bad"

Challenge Description: Write a program that asks the user for input. The user will enter Good or Bad. You do not have to support any other input. If the user enters Good, print...

49 mins ago 2
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What is a good journal that allows programming focused articles?

In most scientific and engineering journals, the implementation and coding of the solution to a problem is treated with secondary importance. I am curious are there any journal(s) that welcome...

1 hour ago 2
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Bitcoind could not locate RPC credentials but rpcuser and password are set

I installed bitoind and synced it. But when i'm trying to connect from my php website i getting: Unable to connect to http://user:[email protected]:18332/. Also when i'm trying...

1 hour ago 2
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Is it true that the workload of professors increased?

In general, a professor teaches basic, intermediate and advanced courses. Content of basic, intermediate courses are generally based on textbooks. Advanced courses may require recent results....

3 hours ago 2
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How is unwanted cold welding prevented in space?

Metallic surfaces touching in the vacuum can stick to each other and fuse. This is known as the "cold welding" and it seems to be a possible issue in space if it happens where it...

3 hours ago 2
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Bronze material compatibility for mechanism exposed to LEO

I'm looking at using a worm gear for a latching mechanism on a spacecraft that's destined for a LEO trajectory. The mechanism is on the outside of the spacecraft, but the worm gear itself...

3 hours ago 2
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Rename hundreds of filenames to replace or delete specific words including duplicated words via MacOS Terminal (bash/sh/zsh?)

Summary I have thousands of pictures that were titled in full sentences. I am trying to automate a way to do clean them up with a single script, and then reuse that script as I add more pictures....

3 hours ago 2
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Enablig USB3.0 HDMI Video Capture /UltraHD on CentOS

I purchased this device on amazon. Its description: Game Capture Card, 4K HDMI to USB 3.0 HD Video Audio Capture Device 1080P 60FPS Game Box Grabber, HDMI Video Conference Camera, Live...

4 hours ago 2
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What's the change of resistance after gate high voltage failure?

I have a damaged p-type mosfet. Resistance of drain to gate: almost zero , Drain to source : below 10Mohm(some are xxxkohm). I think ESD is injected into drain. So. I want to know the symptoms(resistance...

4 hours ago 2
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Why is git stash push --keep-index doing this?

I want to git stash a specific file while keeping it in the working directory for further work. I do this, which I thought would do what I want: $ git stash push --keep-index -m...

4 hours ago 2
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Screen flickers when playing sound

I made the switch from OpenSuse TW to Arch, instead of installing arch from scratch I decided this time to try Arco Linux. Now, the flickering problem isn't new to me, it happened on Fedora...

4 hours ago 2
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Questions from a current regulating and measuring circuit

In my previous question I asked about a simple topology suggestions for regulation of highish currents(around 10A) especially for resistive heating elements in 1...10 Ohm range. I concluded...

4 hours ago 2
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How to run remote server shell script with environment parameters on Jenkins pipeline

I am attempting to run a shell script on a remote server in jenkins scripted pipeline using the sshCommand remote: remote, script: command. This line of code currently looks like this: sshCommand...

4 hours ago 2
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How to report unconnected net label in Altium 16?

I work with Protel99se and I couldn't get Protel to show me a net label that has no matching net label for a connection as a warning or error so I figure maybe the newer Altium 16 that I have...

5 hours ago 2
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Should I repeat words from the abstract as keywords?

To maximise discoverability of my manuscript, should I avoid repeating words that occur in the abstract or title in the keywords? I have a feeling that common academic search engines don't...

5 hours ago 2
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The short circuit test on a single phase transformer

In the short circuit test of a single phase transformer, we connect a wattmeter to on the high voltage side and we increase the voltage till rated currents are set up. The text book says that...

5 hours ago 2
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shutdown, but still allow new logins

I have a linux vm on aws in ec2 that starts up, performs a task, then shuts itself down. I am issuing the shutdown command like this: shutdown -h 5 I have a 5 minute delay to give...

6 hours ago 2
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