ANGLE MODULATION CIRCUIT

摘要

In a circuit for angularly modulating a composite video signal (SG1) by means of a variable frequency oscillator (VCO), a desired frequency deviation of modulated video signal can be easily set. Namely the width fo frequency deviation and the lower limit frequency of the angularly modulated video signal can be set independently from each other.
Only the oscillation frequeny changes with a variation of the value of resistors (R2) while the width of frequency deviation makes no variation. The width fo frequency deviation changes when the value of the resistor (R3) is varied.