Help on Switch OFF 4amps 230v Load after 5 seconds

Discussion in 'The Projects Forum' started by rvenki76, Jan 6, 2013.

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  1. rvenki76

    Thread Starter New Member

    Dec 6, 2008

    I want to ON my heater load only for 4 to 5 sec and switch off even if i forget to switch off physically.

    I want to triac-switch-off my AC load (aprox 4 amps 230v) after its been physically switched ON. It has to remain switched off till the main switch gets OFF and ON again.

    I'm new to electronics (better in software) and can use ATTiny & Triac for this purpose. But, I want to achieve simple, no-firmware, bare minimum & very cheap circuit.

    please help me to have the circuit with bare minimum components.

    I somehow collected transformer less 5v power and Triac circuits. But, I cannot think of 5sec delay and combining all of these due to my little electronics knowledge.

    Someone can even design without this transformer less 5v parts [But, I'm not that good :-( ]

    I played with Delay circuit as in image but it did not help. caps needs to be discharged to switch on next time.

    can anyone help on this ?

    thanks in advance.
    Last edited by a moderator: Jan 6, 2013
  2. bertus


    Apr 5, 2008

    I am closing this thread as it violates AAC policy and/or safety issues.

    6. Restricted topics. The following topics are regularly raised however are considered “off-topic” at all times and will results in Your thread being closed without question:

    • Any kind of over-unity devices and systems
    • Automotive modifications
    • Devices designed to electrocute or shock another person
    • LEDs to mains
    • Phone jammers
    • Rail guns and high-energy projectile devices
    • Transformer-less power supplies
    This comes from our Tos:
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