29-09-2010, 03:05 PM
[attachment=4616]
VECHICLE SPEED DETECTOR
CONTENT
1.POWER SUPPLY
2.IR TRANSMITTER
3.IR RECEIVER
4.RELAY DRIVER
5.BISTABLE
6.MONOSTABLE
POWER SUPPLY
Power supply :-Every electronics digital circuit works on DC power supply here the ir transmitter and ir receiver and relay driver circuit is works on +12V DC so we will must use the power supply
Circuit operation: - In this we are using Transformer (0-12) v / IC 7805 & 7812, diodes IN 4007,LED & resistors.
Here 230V, 50 Hz ac signal is given as input to the primary of the transformer and the secondary of the transformer is given to the bridge rectification diode. The o/p of the diode is given as I/p to the IC regulator (7805 &7812) through capacitor (1000f/35v). The o/p of the IC regulator is given to the LED through resistors.
Circuit description: - When ac signal is given to the primary of the transformer, due to the magnetic effect of the coil magnetic flux is induced in the coil (primary) and transfer to the secondary coil of the transformer due to the transformer action.” Transformer is an electromechanical static device which transformer electrical energy from one coil to another without changing its frequency”. Here the diodes are connected in a bridge fashion. The secondary coil of the transformer is given to the bridge circuit for rectification purposes.
2.IR TRANSMITTER
3.IR RECEIVER
4.RELAY DRIVER
5.BISTABLE
6.MONOSTABLE
POWER SUPPLY
Power supply :-Every electronics digital circuit works on DC power supply here the ir transmitter and ir receiver and relay driver circuit is works on +12V DC so we will must use the power supply
Circuit operation: - In this we are using Transformer (0-12) v / IC 7805 & 7812, diodes IN 4007,LED & resistors.
Here 230V, 50 Hz ac signal is given as input to the primary of the transformer and the secondary of the transformer is given to the bridge rectification diode. The o/p of the diode is given as I/p to the IC regulator (7805 &7812) through capacitor (1000f/35v). The o/p of the IC regulator is given to the LED through resistors.
Circuit description: - When ac signal is given to the primary of the transformer, due to the magnetic effect of the coil magnetic flux is induced in the coil (primary) and transfer to the secondary coil of the transformer due to the transformer action.” Transformer is an electromechanical static device which transformer electrical energy from one coil to another without changing its frequency”. Here the diodes are connected in a bridge fashion. The secondary coil of the transformer is given to the bridge circuit for rectification purposes.
