CONSTANT TRKQUENCY OSCILLATORS 



75 



where 



Fig. 2 — Hartley oscillator, plate stabilization, 



c- = r \ ^ n 



'IL.+L.A^-IMA]' 



, L, + M 



Lo = L^ + Li + 2M, 



Li + M 



where 



=PC4 



Fig. 3 — Hartley oscillator, Grid stabilization. 



C = (7 P I z^ ~1 



' "' L ^1 + L.A'^ - IMA J ' 



L, + M 



La = Li + Li + 2M, A = 



L. + M 



where 



Fig. 4— Hartley oscillator, plate and grid stabilizati 

 I ,A^ 1 PL, + LoA'- - 2MA 



a ^ c, G L 



L, = Lo^A^ - L,- LoA'- + 2MA, 



Lo 



]■ 



C, 



Lo = Li + Li + 2M, A = 



L, + M 

 Li + M 



