Need some key words to look up equipment

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Discussion Overview

The discussion revolves around finding a specific type of current source that can automatically disable current after a set duration, specifically 30 seconds. Participants explore various equipment options and technical specifications related to current sources, including the potential use of computer-controlled devices and memristors.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested
  • Homework-related

Main Points Raised

  • One participant inquires about a current source that disables current after 30 seconds and expresses frustration with their supervisor's lack of response.
  • Another participant suggests looking for computer-controlled current sources with an output of approximately 3 A.
  • A technical suggestion is made that a memristor might be needed for the application, although its commercial availability is questioned.
  • One participant provides a link to a low-cost current source option that requires a 10 V logic pulse for operation.
  • There is a discussion about whether the suggested power supply can operate in constant current mode, with some participants affirming that it can.

Areas of Agreement / Disagreement

Participants express differing views on the suitability of a memristor versus a standard current source, and there is no consensus on the best approach to meet the original request for a current source that disables after 30 seconds.

Contextual Notes

Some participants note the need for clarity on whether the desired equipment should function as a current source or a voltage source, indicating potential confusion regarding the specifications.

rompecabeza
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Hi all, we need to find a current source which automatically disables current after, say, 30 s. Does anyone know any specific names for that? My supervisor said he saw some but never returned my emails with the same question. That's project 'management' in academia for me.
 
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rompecabeza said:
Hi all, we need to find a current source which automatically disables current after, say, 30 s. Does anyone know any specific names for that? My supervisor said he saw some but never returned my emails with the same question. That's project 'management' in academia for me.

Welcome to the PF.

How much current? Can you just use a computer to control a standard current source?
 
Ok, that's a start. Thanks. I will look for computer-controlled sources with ~3 A of output.
 
Baluncore said:
memristor.

WITW is that thing? The wikipedia page just confused me... o0)
 
Baluncore said:
Technically speaking you need a memristor.
https://en.wikipedia.org/wiki/Memristor

As far as I know they are not commercially available and are still deep in research mode.

I think the OP needs a standard current source. That way he or she can control it using a trivial Labview program. Easy peasy.

Here is a very low cost option. The current control requires a 10 V logic pulse to turn it to 3A or off.

http://www.testequipmentdepot.com/i...tm?ref=gbase&gclid=CI_u09n98cYCFUdufgodJRkOjw
 
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berkeman said:
Can that power supply be put into constant current mode? It sounds like the OP is looking for a current source instead of a voltage source. :smile:

I had a quick look at the manual and it can be put into constant current mode. It seems really easy to use. Just a control voltage to set the current.
 
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