Noob needs help.

Discussion in 'General Electronics Chat' started by WTL75, Oct 12, 2007.

  1. WTL75

    Thread Starter New Member

    Oct 12, 2007
    1
    0
    Hello,

    What would you recommend I use for a timer and relay for the attached circuit? The timer will need to use 110VAC and switch every 15 min. The AC and DC circuits need to be isolated.

    Thanks in advance!!

    TY,
    WTL75
     
  2. subtech

    Senior Member

    Nov 21, 2006
    123
    4
  3. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    I'm curious as to what you're trying to do with that circuit?

    I see you're switching between the + and - of the battery bank, but there is no path for return current.

    How come you have five pairs of batteries in parallel? Do you really need that much current?
     
  4. arthur92710

    Active Member

    Jun 25, 2007
    307
    1
    Nice topic title! -.-
     
  5. thingmaker3

    Retired Moderator

    May 16, 2005
    5,072
    6
    For the timer, you can configure an LM555 as an astable multivibrator with 30 minute period and 50% duty cycle: http://www.uoguelph.ca/~antoon/gadgets/555/555.html

    For the relay and the relay driver, answer will depend on how much current your load draws.
     
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