Is There an Electronic Product for Designing Adjustable Timing Delay for Relays?

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Discussion Overview

The discussion centers around designing an electronic device to control two relays with specific timing delays. The goal is to activate relay A for one second and relay B after a variable delay of 150 to 300 milliseconds following relay A's activation. Participants explore available products and potential design solutions.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about existing electronic products that can provide adjustable timing delays for relays.
  • Another participant suggests that McMaster offers various timing relays but notes that they may not meet the required millisecond range.
  • A participant proposes using 555/556 timers and logic gates as a potential design approach for achieving the desired timing functionality.
  • A link to a Wikipedia page about the 555 timer IC is shared as a resource for further exploration.

Areas of Agreement / Disagreement

Participants generally agree that existing timing relays may not suit the specific millisecond timing requirement, but there is no consensus on the best approach to design the desired timing delay device.

Contextual Notes

Participants have not resolved the specific technical requirements or limitations of the proposed solutions, and there are no established designs or products that meet the exact specifications outlined.

darkwhite87
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Hi guys,

Background:

There are 2 relays, A and B that needs to be controlled (24V)

And a signal generating device that composes of a push button and an adjustable mechanism for timing delay between the 2 signals. (this is what I want to design)

Specification:

I want to design a device that, when I press the push button, relay A is activated for 1 second. Meanwhile, relay B is activated after a delay (of 150~300ms adjustable) after relay A is activated. Relay B also activates for 1 second.

Does anyone know if there are avaliable electronic products that will aid me for this purpose?
Such as an "adjustable delay timer" etc.

Cheers
 
Engineering news on Phys.org
mcmaster.com has a ton of timing relays.
 
Thanks Proton, but I looked through mcmaster, the timing relays are in the range of second~hours while I need a delay in the order of milliseconds.

Secondly I think I don't need a timing "relay". I want to control my relay with a time delay device.
 
oh, yeah, milliseconds is pretty fast for what they have. i think i would start looking at designing something with 555/556 timers and some logic gates.
 
Here's a good place to start for using http://en.wikipedia.org/wiki/555_timer_IC" .
 
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