| Show oscillation and what term means way of generating alternating current by means of vacuum tube 0 on n ID III II 11 if cirill rill that I 1 III its alv flys I 1 rn rit 11 II aho mil nitz III ill it will tit although i i 1 it it 11 IT ri w 4 tit t 0 n I 1 ito ill it H i oil oi li to ti ahme with it I 1 n w ml I 1 in fit fact ri go ml I 1 I 1 I 1 N nommar osell all ito lit 1 n mill ill II 11 I 1 1 ca i it 11 IN n a fro frn alt ernnt ro hill tit r r dipti il niti biting N 1 ll 11 t am 4 tl if m tl if 14 ll 11 I 1 roi rol I 1 id um u gofir r fi r tn tit ili r ir nil lilt nit it in I 1 luuri 2 11 lii f r it 11 I 1 tit nil ri it 11 fill inanc in itle I 1 I 1 I 1 I 1 II 11 ni anso r 0 I 1 ill lie in ill ill li li it ull lilt IN if 11 m IN 11 it li if 1160 4 ill lilt n lhoir C i I 1 i i in n t if II 11 ll 11 III t III 1 sin I 1 tail illel i ne 1 i t ll 11 L i n its aftin ni 14 DIP tile I 1 II 11 1 1111 it to t I 1 til tit tit till lr lilt 11 nil ll 11 L r hilll to I 1 Nn enill ill in US I 1 1 1 1 UK ha NJ ains S 4 it III 11 I 1 til 1 1 III I 1 in r ri mi nip 1 I e normal con I 1 ll 11 n f tl it i in I 1 akiri 1 0 o if s 4 ri r I 1 i I 1 lull till tit in wa wm 10 t tit t ill alic W I 1 X diagram showing how spring holds the weight position nt tit X it would I 1 ie e canh alent to cluren clur ln ini the condemner con demer he lle leasing the blicht from position it mill return to its original po atlon 1 I tin annl I 1 this condition li Is the same as tit indenter cn denter through the circuit in hure 2 1 this tills circuit ie Is duld sald to lime haie a natural period of oscil lation A three electrode vacuum tube II 11 connected to a circuit having a natural perlo 11 of oscillation will if certain conditions are tire satisfied generate pen erate alter bating current of the frequency fixed filed its the inductance and capacity of the circuit to willell it 1 Is 14 4 conn connected ted if the input circuit of the tile detecting tut tute e c to 0 4 ni t 2 arrangement of the simple oscillatory circuit it Is shown Is I 1 conti continually nuaRy excited by a locally gen crated era ted frequency of cycles which frequency can correspond to the free oscillations generated in the cir cult then when the signal comes in the input circuit ll 11 excited by both cycles and cycles atle latter being the frequency of the in to coming signal and the result being a frequency of 1000 1000 cycle ccle this fre quency will give a 1006 10 cycle beat note in III the telephones when the local frequency which in the example ie Is cycles ie Is generated by the detector tube it Is called the nut odyne method of reception no isow before we vie leave learie this thi subject let Us consider regeneration bat hat is I 1 regeneration and how doe it dafter from oscillation As we said before oscillation Is the method of generating 1 an alternating current by means of a vacuum tube regener regeneration Is a 8 method brin bringing ging the output of a tube back to the input of the tube 0 go o that thi signal ill be bo sent through tire tube again min in order ta increase the dignal signal energy |
