27-12-2012, 06:09 PM
Angle Control of DC-motor using 555Timer
Angle Control of DC-motor.pptx (Size: 210.32 KB / Downloads: 33)
Angle control using 555Timer
Servo motor is used in robotic applications, rotation depends on the pulse train given to it.
For small applications it costs apex.
Remedy – 555 timer.
555 Timer
The 555 timer is an extremely versatile integrated circuit which can be used to build lots of different circuits.
555 Timer can be operated in three modes. They are
Astable
Monostable
Bistable
Monostable mode
In the monostable mode, the 555 timer acts as a “one-shot” pulse generator.
The pulse begins when the 555 timer receives a trigger signal.
The width of the pulse is determined by the time constant of an RC network, which is given by
t = 1.1*R*C
The pulse ends when the charge on the C equals 2/3 of the supply voltage.
Relay
A Relay is an electrically operated switch
It is used where it is necessary to control a circuit by a High-power signal.
Applications
Robotic arm
Bottle filling process
Labelling
Dot Matrix Printers
Antenna Positions