solenoid

Discussion in 'The Projects Forum' started by chazziemann, Mar 23, 2011.

  1. chazziemann

    Thread Starter New Member

    Mar 23, 2011
    2
    0
    hi,

    What type of solenoid would i need? Or how would i go about making the circuit.

    I want the solenoid just to open for 2 sec and then close. Just like in a coffee machine i need to allow enough powder to pass. The power supply is 5Vdc via a relay switch.

    A small signal will operate the relay which will open the solenoid.

    Any input will help

    Thanks
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    We need more details for a good answer. What is the powder? How repeatable must the measurement be? Is some other device involved? -
     
  3. GetDeviceInfo

    Senior Member

    Jun 7, 2009
    1,571
    230
    'Dosing' is the term that describes quantitative dispensing of granular solids. Typically, a disc with a volumetric chamber is filled in a hopper, then advanced to dump in a delivery tube, or similar. 'Dosing' disks are usually circular with a number of chambers, advancing in circular fashion.
     
  4. chazziemann

    Thread Starter New Member

    Mar 23, 2011
    2
    0
    There are two circuits. Circuit1 is the voltage source (amplified) which runs Circuit2. The source is amplifies from 0.010V to 0.7V in circuit1. This amplification was carried out by a Omp Amp. Once this voltage is reached a SPSTNO relay switch closes. Circuit2 is connected to a 5Vdc source. This will operate the solenoid which DISPENSES a DOSE of fine powder.

    I am only knew at this so any help is greatful
     
  5. CDRIVE

    Senior Member

    Jul 1, 2008
    2,223
    99
    I find it odd that the solenoid circuit would be 5V. It's not impossible, it's just not ideal.
     
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