US 12,278,596 B2
Circuit unit and vibrator device
Hisahiro Ito, Minowa (JP); Saneyuki Imamura, Minowa (JP); and Akio Tsutsumi, Chino (JP)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Jul. 19, 2023, as Appl. No. 18/354,988.
Claims priority of application No. 2022-116980 (JP), filed on Jul. 22, 2022.
Prior Publication US 2024/0030871 A1, Jan. 25, 2024
Int. Cl. H03B 5/36 (2006.01); H03H 9/05 (2006.01); H10N 30/88 (2023.01)
CPC H03B 5/364 (2013.01) [H03H 9/0547 (2013.01); H10N 30/88 (2023.02)] 9 Claims
OG exemplary drawing
 
1. A circuit unit comprising:
a first terminal functioning as a power supply terminal or a voltage input terminal, to which a first voltage is applied;
a second terminal to which a second voltage is applied;
an oscillation circuit oscillating a vibrator;
a first switch electrically coupling or decoupling the first terminal and the oscillation circuit;
a second switch electrically coupling or decoupling the second terminal and the oscillation circuit; and
a selection circuit controlling the first switch and the second switch in response to the first voltage supplied via the first terminal and supplying one of the first voltage and the second voltage as a power supply voltage to the oscillation circuit.