the Form of Free Triode Vibrations, 



203 



This relation may be obtained experimentally with the aid 



of the circuit shown in fig. 2, where the ratio ^ is made 



M ' 



equal to j- By sliding the contact A along the connexions 



of the battery B such correlated readings of i a and v a may be 

 obtained. 



Fie:. 2. 



V0H'IH» 



Fio-. 3. 



Curve showing- " oscillation characteristic " of triocle. 



The relation obtained, a typical example of which is shown 

 in fio-. 3, may be termed the " oscillation characteristic/' the 

 conditions during an oscillation being represented by a point 

 which oscillates on this curve. This point will bo termed 

 the "representative point" in the following ili.scus.Mon. 



T 2 



