Saturday, 16 June 2018

AUTO DOOR (BATH ROOM) SWITCH

Auto door (bath room) switch.
As you know , necessity is the mother of invention. This is true in this case too.
Our bath room light is not visible when the door is closed. But the light is visible to my good neighbour. On many occasions, we forgot to switch off that light. My neighbour alert us after 10.30 pm or so-Sometimes next day early morning. Though we were thankful to them, we were ashamed of not switching off after use and troubling my neighbour to alert us, of course without our asking. The result is this auto switch. Though sensor systems are available, cost forced me to develop this simple mechanical device.
      This is basically a electric bell switch and a small piece of metal packing tape. This metal tape should be slightly flexible and strong enough to press.
      Neutral line is connected though this switch to the bulb inside the bath room. This switch is fixed on the top of the door frame in the vinges side. One side of the Metal piece should be slightly bent so that it should press the switch when the door is closed. Insulation tape should be sticked to the bend portion to ease the friction. This metal tape should be nailed in the top of the door in such a way that when the door is closed, the bent portion of the tape just presses the stitch. Fixing the metal tape need to be the skilled work.  Excess pressure on the switch should be nullified by the flexibility of the tape.
See the working of the switch through the video. Loss of memory ( to switch off the switch) is overcomes by this simple device at very low cost.
Dastn
narayanadast1952@gmail.com.
Mob:08891442959