Course CR 10066
Research Project
DECLARATION
I of the following student number declare that this circuit is researched and constructed by me
Signature...........................................................
INTRODUCTION
An electronic muscle stimulator is a circuit designed to stimulate nerves of that part of the body by attaching electrodes. It is used to revive frozen muscle that impair movement, it aid in building up muscles and it also helps in removing cellulites in the body
EMS causes adaption, i.e. training of muscles fibers and can be used as a therapeutic tool. In medicine it is used for rehabilitation purposes, for instance in Physical therapy in the prevention of disuse muscle atrophy which can occur for example after musculoskeletal injuries, such as damage to bones, joints, muscles, ligaments and tendons.
BLOCK DIAGRAM
CIRCUIT DIAGRAM
SIMULATION OF THE CIRCUITss
SIMULATION OF THE CIRCUIT (PROTEUS)
[pic]
CIRCUIT DISCRIPTION
At start-up the 5Vdc voltage from the External source (Battery) is supplied to the input of the control circuit of the EMS, where the control circuit inverts the 9v dc into a pulsating wave. The preset level controller is used to vary the frequency of the EMS to low, medium and high. The lower the resistance the higher the stimulation, the higher the resistance lower the stimulation. The intensity control is used to determine the intensity of the stimulation. The transformer is used to output a sinusoidal wave which varies from (30-60) Vac. The electrodes are generally pads that adhere to the skin.
MATHEMATICAL DESCRIPTION
USED FORMULAR
F=1.44/ (RA+2B) C
F