Bogen-Voice Activated Relay

this is what the automatic voice-activated switch looks like it is used to turn on or off an appliance using a sound enabled control switch it can also be used as a power saving device that switches appliances on only when it detects sounds due to human occupancy after assembling this kit you will learn about sound sensing the working of a microphone electromechanical relay comparator and voltage regulator this is the microphone this is the relay this is the sensitivity potentiometer vr1 this is the delay potentiometer vr-2 this is the input supply and this is the output supply for the voice controlled appliance adjust vr1 such that it is at maximum or clockwise position adjust vr-2 to a position to souk your delay requirements for demo purpose we have kept VR to at minimum position so the appliance takes the least amount of time to switch off you insert the 12-volt DC power supply to t