| US 7,486,150 B2 | ||
| Electric circuit and oscillator comprising said electric circuit | ||
| Ivo Pannizzo, Aosta (Italy); and Francesco Pulvirenti, Acireale CT (Italy) | ||
| Assigned to STMicroelectronics S.r.l., Agrate Brianza (Italy); and DORA S.p.A., Aosta (Italy) | ||
| Filed on Feb. 14, 2006, as Appl. No. 11/353,870. | ||
| Claims priority of application No. 05425080 (EP), filed on Feb. 18, 2005. | ||
| Prior Publication US 2006/0197612 A1, Sep. 07, 2006 | ||
| Int. Cl. H02J 7/00 (2006.01); H02M 3/06 (2006.01); H03K 3/02 (2006.01); H03K 3/353 (2006.01) | ||
| U.S. Cl. 331—111 [331/143; 331/186; 320/166; 307/109] | 21 Claims |
| 1. An electric circuit, comprising:
a circuit path from a first reference voltage terminal to a second reference voltage terminal, said path comprising means
for supplying current, at least one capacitor, first switching means for connecting or disconnecting said at least one capacitor
with respect to said means for supplying current, said first switching means having a triggering value;
second switching means placed in parallel to said at least one capacitor; and
control means for acting on said first and second switching means for controlling charging and discharging of said at least
one capacitor, said control means including further means, operable during the charging of said at least one capacitor, for
acting on said first switching means for blocking the charging of said at least one capacitor when a voltage value across
the at least one capacitor reaches a threshold voltage value, said threshold voltage value being lower than the triggering
voltage of said first switching means.
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