Rca1948FrequencyModu.. - The New Jersey Antique Radio Club

PUSH-PULL CIRCUIT 455designing a translating device having a minimum mass and thereforecontributing to a minimum mechanical impedance.A typical single-ended FM circuit in its elementary form is illustratedin Figure 1A. A pentode (7^ with its cathode (K), grid (Gi),and screen (G 2 ) is combined with the tuned circuit (L t ) and a variablecondenser (Cj) to form an oscillatory circuit electron-coupled 2 to theplate (P) and electrostatically shielded by grid (G 3 ) (which is normallythe suppressor element of the tube). The oscillatory energyfrom the plate is applied to a circuit which consists of another tunedcoil (L 2 ) and condenser (C 2 ). This circuit is slightly off resonanceot£O