Momentary (toggle) switching

Discussion in 'General Electronics Chat' started by bijoy, Nov 6, 2009.

  1. bijoy

    Thread Starter New Member

    Nov 6, 2009
    A newbie and my request might have already come up in this forum, anybody guiding me to the right circuit will be big help.
    Though not an expert in electronics, I can follow guide steps to be followed.

    I plan to make a circuit which should run on a 6v or 12v battery, This circuit will receive a 2v-5v voltage from a source for a small momentary duration of 1 or 2 sec only , this voltage should switch on a load which operates on 12V DC, 4 amps .
    This 2v-5v input will not be continous it will be only momentary but it should switch on the load and the load will continue working.

    On receipt of the next 2v-5v the load will switch off. i.e toggle on/off till there is a next input ,hence the circuit will remain in the last state till it receives the next signal.

    The system is meant to be put for a remote use hence there should not be a physical switch on/off , it will be totally electronic/relay driven.

    If I am not asking for too much a simple circuit will be greatly appreciated.
    Thanks in advance.
  2. alphacat

    Active Member

    Jun 6, 2009
    You can use a relay driver for that.
    The input (which i guess is a low power one), would drive the Baes/Gate of a BJT/MOS, and a second power supply wouls drive the relay's coil.
    Moreover, you will need to use a latching relay, and not a regular one.
  3. bijoy

    Thread Starter New Member

    Nov 6, 2009
    If anybody can post the schematic or circuit , it would be of great help.