220v flasher circuit

Discussion in 'The Projects Forum' started by yuvi1, Sep 21, 2015.

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  1. yuvi1

    Thread Starter Member

    Feb 1, 2013
    37
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    Hi guys,

    i'm looking for a simple circuit of a flasher for light bulbs, a flasher that is controlled by a potentiometer.

    something exactly like this circuit :

    http://www.surplustronics.co.nz/products/2355-kit-ac-flasher-2-ch-220v-1400w

    I know the simple way is to buy this kit, but i want to build it my self, and they dont reveal the specific parts and values of the circuit.


    If someone knows this circuit or something similar to it and can post it, it would be great!

    Thanks !
     
  2. blocco a spirale

    AAC Fanatic!

    Jun 18, 2008
    1,440
    368
    :eek:That's an awful and dangerous design, powered directly from the mains via a resistor.

    Try this one instead:

    http://circuitdiagram.net/portable-230v-lamp-flasher.html

    It is essentially the same except that it provides essential isolation between the low voltage side and the mains via opto-couplers. You could derive the 3V from a small transformer if you don't like the idea of batteries.
     
    Last edited: Sep 21, 2015
  3. ScottWang

    Moderator

    Aug 23, 2012
    4,855
    767
    The forum does not open this kind of topic yet, if you insist to using the transformerless circuit(non-isolated) then this thread will be locked, if you considering the similar circuit as blocco a spirale suggested then the topic can be continuing.
     
  4. dannyf

    Well-Known Member

    Sep 13, 2015
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    You are asking that we help you steal it from its IP owners?

    Seriously, it is not that hard to make one work. The one linked earlier would work, a little bit too complicated for my linking but the simplest would be a resettable fuse - all depending on what you are trying to do.
     
  5. ScottWang

    Moderator

    Aug 23, 2012
    4,855
    767
    This thread will be locked, if you considering to using the isolated circuit then pm me or other mods, thanks.
     
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