SAWTOOTH VOLTAGE GENERATOR Russian patent published in 2007 - IPC H03K4/50 

FIELD: radio engineering; automatic frequency control systems.

SUBSTANCE: structure of proposed sawtooth-voltage generator characterized in arbitrary variation of harmonic-oscillation instant phase greatly exceeding ±π radian is based on analog integrator built around typical asymmetric-input operational amplifier 1 with capacitive feedback 3 applied through capacitor C and provided with input circuit 3 through resistor R and normally open contacts of starting relay 4 between control voltage W bus 5 and common point of operational amplifier. Normally closed contact of starting relay functions to connect typical initial condition setting circuit to integrator output through feedback resistor R₀ and resistor R_v connected to voltage N supply 6 in original position.

EFFECT: enlarged range of harmonic-oscillation instant phase variation.

1 cl, 2 dwg