SINE-WAVE VOLTAGE GENERATOR Russian patent published in 2005 - IPC

FIELD: radio-electronic engineering.

SUBSTANCE: proposed generator has transistor 1, inductance coil 2, capacitors 3 - 7, operational amplifier 8, voltage regulator diode 9, diode assembly 10 of diodes 21 and 22, resistors 11 - 19, and device output 20. Sine-wave signal picked off output 20 is rectified by diode 22 and dc voltage equal in amplitude to output signal is set across capacitor 4. Turn-on voltage picked off voltage regulator diode 9 is applied through resistor 6 to diode 21. The latter starts passing current and voltage is supplied to capacitor 4 of operational amplifier 8 through resistor 17. Other input of operational amplifier 8 is supplied with dc voltage. Correcting voltage picked off output of operational amplifier 8 is passed to base of transistor 1 thereby changing working point of transistor 1 to bring output signal to initial level.

EFFECT: provision for saving stability in case of variations in parameters of components.

1 cl, 1 dwg