2B-DIRECTION INDICATOR using 4049
Main attraction of this project is that any body’s attention is drawn towards the LED automatically which is moving in a particular direction. This project is particularly suitable for Hotels or any special place in a house meant to draw the attention of the guest. Due to LED used in this project consumption of electricity is very small.
TECHNICAL DESCRIPTION AND WORKING
This project has been developed and tested O.K. in our TV Engineers Technical Lab. The components and PCB used in the projects published in our books are available for sale at resonable price.
This project is a novelty in the electronic field. Guest have to face a lot of difficulties in locating the places like Toilet, Guest Room and Rest Room etc. in the big building. These difficulties are solved through this direction indicating project. LED used in this project seems to be moving in one direction alternately getting ON and OFF. In this project one CMOS IC 4049 has been used consisting of 6 no. of inverter gates indicated by N1, N2, N3, N4, N5 and N6. This project works on 9V DC and consumption of electric current is only 45 m.Amp. To make the project more attractive used the LED’s of red color are used because red color is visible at a long distance.
PRECAUTIONS WHILE ASSEMBLING THE PROJECT :-
- To make a bigger arrow sign you have to use a transistor stage to drive the load,
- Do not solder CMOS IC directly on PCB. Use IC base. Do not touch CMOS IC with bare hand. It gets spoiled due to anti-static charge produced by human body.
- While soldering diode take care of anode and cathode terminal.
- Do not solder IC directly on PCB. There is possibility of getting it spoiled due to leakage current from soldering Iron.
LIST OF COMPONENT
PCB [Code 5TP16]=1
470E=5, 330E=1, 1MEG=5
IC 4049=1, IC BASE [16 Pin]=1
Plastic Sheet =1
DC Supply 12V =1