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AssigneeSeiko Epson Corporation
InventorsShinji Nakamiya, Tadao Kadowaki, Yoshiki Makiuchi
Estimating the term…
A constant-voltage generation circuit 100 creates a constant voltage. This constant-voltage generation circuit 100 comprises a first voltage creation circuit 110 for creating a reference voltage and a second voltage creation circuit 130 for creating the constant voltage which has a predetermined relationship with the reference voltage. The first voltage creation circuit 110 comprises a first constant-current source 150-1 for supplying a constant current and a first voltage-control transistor 112, through which this constant current flows, for outputting the reference voltage on the basis of a predetermined potential. The constant current is set to a value within the saturated operating region of the first voltage control transistor 112.
An electronic circuit, comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
Wherein the variable actually regulated by the final control device is DC: using semiconductor devices in series with the load as final control…
Electric power supply circuits specially adapted for use in electronic time-pieces
Wherein the variable actually regulated by the final control device is DC: characterised by reference voltage circuitry, e.g. soft start, remote…
Wherein the variable actually regulated by the final control device is DC: using semiconductor devices in series and in parallel with the load as…
Term ended 15 Jan 2019 (estimated)
1. Field of Invention
This invention relates to an electronic circuit, a semiconductor device, electronic equipment, and a timepiece.
2. Description of Related Art
FIG. 1 is an illustrative view of a preferred first embodiment of an electronic circuit to which this invention is applied;
FIG. 2 is an illustrative view of an example of the constant-voltage generation circuit used in the electronic circuit of this first embodiment;
FIG. 3 is an illustrative view of an example of the constant-current source used in the constant-voltage generation circuit;
Preferred embodiments of this invention will be described below with reference to the accompanying drawings.
First Embodiment
An example of an electronic circuit to which this invention is applied is shown in FIG. 1. The electronic circuit of this embodiment comprises a constant-voltage generation circuit 100, which outputs a constant voltage Vreg over a signal output line 200, and a crystal oscillation circuit 10, which is driven by this constant voltage Vreg.