what is potentiometer   potentiometer is a potential divider or we can also say that it is manually adjustable resister with three terminal.Two terminals are connected to resistive element and third one is connected to wiper.wiper position is determines the output voltage. potentiometer has three terminals first and third terminal are connected to a resistive

Proximity sensors

    PROXIMITY SENSOR   proximity sensor is a small device which can detect the presence of any nearby object without any physical contact. proximity sensor are more reliable because there is no physical contact between the sensor and  detected object. WORKING PRINCIPLE OF PROXIMITY SENSOR    working principle of the proximity sensor is similar

IR sensor

sensors sensor is a device which  is able to detects the  change  in the ambient condition.sensors used for an element which produces a signal relating  to the quantity being measure. for example  … an electric resistance temperature element ,the quantity being measured  is temperature and sensor transform an input of the temperature into a change

harmonic derives

when shafts are intersecting  1.straight bevel gears 2.spiral bevel gears Bevel gears are gears where the axes of the two shafts intersect and the tooth-bearing faces of the gears themselves are conically shaped. 1.Straight bevel gear  Straight bevel  have conical pitch surface and teeth are straight and tapering towards apex.straight bevel gears are used to