Učo :                                                   Group:
Date:


Month:


                                Year:

Name:


IV.                         NOTICE: [  ] fill in the units in the square brackets

Task: Measuring the voltage and frequency of electric signals with the oscilloscope

Key words: electron, electromagnetic force, voltage, frequency


n.

  Y

    S

     U voltage [  ]

1.




2.




3.




4.




5.





n.

  N

   X

    T

     f frequency [  ]

1.





2.





3.





4.





5.






Example of U value and f value calculation:







Discussion

Importance for the medicine / connection with the health and illness:






Possible errors and accuracy:






Conclusion:





Učo :                                                  Group:
Date:


Month:


                                Year:

Name:



Task: Frequency dependence of tissue and tissue model impedance.

Key words: resistance, impedance, capacitance, Ohm law, capacitor


Model Rn

              input

                         Ug


                                             output

                                                        Ur


                                                                             R=        [  ]

frequency (Hz)

              defl. fact.

              S

                         divisions

                         Y

                                  Voltage (V)

                                  U=S* Y

                                             defl. fact.

                                             S

                                                        divisions

                                                        Y

                                                                 Voltage [  ]

                                                                 U=S* Y

                                                                             Z [  ]

100

              0.5

                         2

                                  1





250

              0.5

                         2

                                  1





500

              0.5

                         2

                                  1





750

              0.5

                         2

                                  1





1000

              0.5

                         2

                                  1





2000

              0.5

                         2

                                  1





4000

              0.5

                         2

                                  1





100K

              0.5

                         2

                                  1






Model Z

              input

                         Ug


                                             output

                                                        Ur


                                                                             R=       [  ]

frequency (Hz)

              defl. fact.

              S

                         divisions

                         Y

                                  Voltage (V)

                                  U=S* Y

                                             defl. fact.

                                             S

                                                        divisions

                                                        Y

                                                                 Voltage [  ]

                                                                 U=S* Y

                                                                             Z [  ]

100

              0.5

                         2

                                  1





250

              0.5

                         2

                                  1





500

              0.5

                         2

                                  1





750

              0.5

                         2

                                  1





1000

              0.5

                         2

                                  1





2000

              0.5

                         2

                                  1





4000

              0.5

                         2

                                  1





100K

              0.5

                         2

                                  1






Real tissue

              input

                         Ug


                                             output

                                                        Ur


                                                                             R=      [  ]

frequency (Hz)

              defl. fact.

              S

                         divisions

                         Y

                                  Voltage (V)

                                  U=S* Y

                                             defl. fact.

                                             S

                                                        divisions

                                                        Y

                                                                 Voltage [  ]

                                                                 U=S* Y

                                                                             Z [  ]

100

              0.5

                         2

                                  1





250

              0.5

                         2

                                  1





500

              0.5

                         2

                                  1





750

              0.5

                         2

                                  1





1000

              0.5

                         2

                                  1





2000

              0.5

                         2

                                  1





4000

              0.5

                         2

                                  1





100K

              0.5

                         2

                                  1







Example of  Z value calculation:






Graph:



















































































































































































































































































































































































































































































































































































































































                                               x - axis  …………………………………    [      ]


Discussion

Importance for the medicine / connection with the health and illness:







Possible errors and accuracy:







Conclusion:













Task: Skin resistance

Key words: resistance, electrical conductivity, ion, electric charge


Table of measured resistance
values:

epidermis

                       resistance     [  ]

natural


 wiped by alcohol


applied saline solution


applied ECG gel










Discussion

Importance for the medicine / connection with the health and illness:






Possible errors and accuracy:







Conclusion: