Oscillator circuit

Details Oscillator circuit Oscillator circuit

2009-03-11

2011-10-04

Diao, M'Baye (Department: 2858)

Electricity: battery or capacitor charging or discharging

Capacitor charging or discharging

C331S018000, C331S10800D

Reexamination Certificate

active

08030904

ABSTRACT:
An oscillator circuit including a charge/discharge unit, a capacitance amplifier, and a level detection circuit is provided. The charge/discharge unit is used to receive a control signal, and perform a charge or discharge operation on a charge/discharge terminal according to the control signal. The capacitance amplifier, including a first impedance, a second impedance, a voltage follower, and a capacitor, is capable of providing an equivalent capacitance with amplifying characteristics. An input terminal of the level detection circuit is electrically connected to the charge/discharge terminal of the charge/discharge unit, and the level detection circuit generates the control signal to the charge/discharge unit according to the charge/discharge terminal of the charge/discharge unit. The oscillator circuit of the present invention may use a capacitance with a smaller level to provide an equivalent capacitance with amplifying characteristics, and thus achieve an oscillator function.

REFERENCES:
patent: 7012473 (2006-03-01), Kokolakis
patent: 7895894 (2011-03-01), Kanai et al.
patent: 2005/0230730 (2005-10-01), Tanzawa
patent: 2010/0019736 (2010-01-01), Katsumi

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