Mechanical Engineer Needs Help with Switching

Discussion in 'General Electronics Chat' started by colewelch, Sep 26, 2016.

  1. colewelch

    Thread Starter New Member

    Sep 26, 2016
    3
    0
    Hey Everyone!

    I have a fairly simple circuit that uses a momentary switch and a latching relay to activate a solenoid. I am trying to change this circuit so the operator has to hold the momentary switch for 3-5 seconds before the signal is sent to the solenoid. What would be a simple way to do this?

    Thank You!
    Cole
     
  2. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,570
    2,380
    You could use a simple 555 timer which could also energize the relay, is the relay a self latching type?
    Max.
     
  3. crutschow

    Expert

    Mar 14, 2008
    13,056
    3,245
    Depending upon the relay coil voltage and current, it could be as simple as adding a transistor, resistor, diode, and capacitor.
    What is the relay coil voltage, current, and type (AC or DC coil)?
     
  4. GopherT

    AAC Fanatic!

    Nov 23, 2012
    6,072
    3,845
    A $7 dollar Arduino and a USB cable to program it. It may be overkill on the hardware but the price includes the board to connect your I/O wires and you get to try countless options without re-soldering anything.
     
  5. colewelch

    Thread Starter New Member

    Sep 26, 2016
    3
    0
    Thank You guys for the help!
     
  6. MaxHeadRoom

    Expert

    Jul 18, 2013
    10,570
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    So what is the decision?;)
    Max.
     
  7. colewelch

    Thread Starter New Member

    Sep 26, 2016
    3
    0
    I went with a Crouzet timer able to handle the 24VDC I am using in the clamping system.
     
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