US4128816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic circuit
Assignee: Seiko Instruments Inc
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Filing: 1977-07-18
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Granted: 1978-12-05
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Expires: 1997-07-18
Abstract
Abstract An electronic circuit which has a constant voltage circuit comprises a reference voltage generating circuit, a voltage controlled element receiving the signals from said reference voltage generating circuit which is composed of a plurality of MOS transistors, and a load circuit receiving said constant voltage circuit.
Inventors
- 👤 Nobuo Shimotsuma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:12
CPC Classifications
G; G05; G05F; G05F3/00; G05F3/02; G05F3/08; G05F3/10; G05F3/16; G05F3/20; G04; G04G; G04G19/00; G04G19/02; G04G19/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
162 words
An electronic circuit comprising a reference voltage generating circuit, a voltage controlled element, a load circuit and power source, said reference voltage generating circuit comprising a current limiting element connected in series with a reference voltage setting circuit comprising a P channel MOS transistor and an N channel MOS transistor in which a gate of said P channel MOS transistor is connected with a gate of said N channel MOS transistor and with drains of said P channel MOS transistor and said N channel MOS transistor, said voltage controlled element being controlled by an output of a connecting point between said currrent limiting element and said reference voltage setting circuit, and being connected in series with said load circuit, and said load circuit including a C-MOS inverter and receiving a constant voltage from said voltage controlled element, said power source being connected with said reference voltage generating circuit in parallel with said voltage controlled element connected in series with said load circuit.
Claim 2
Dependent Claim
162 words
An electronic circuit comprising a reference voltage generating circuit, a voltage controlled element, a load circuit and power source, said reference voltage generating circuit comprising a current limiting element connected in series with a reference voltage setting circuit comprising a P channel MOS transistor and an N channel MOS transistor in which a gate of said P channel MOS transistor is connected with a gate of said N channel MOS transistor and with drains of said P channel MOS transistor and said N channel MOS transistor, said voltage controlled element being controlled by an output of a connecting point between said currrent limiting element and said reference voltage setting circuit, and being connected in series with said load circuit, and said load circuit including a C-MOS inverter and receiving a constant voltage from said voltage controlled element, said power source being connected with said reference voltage generating circuit in parallel with said voltage controlled element connected in series with said load circuit.
Claim 3
Dependent Claim
44 words
An electronic circuit according to claim 1, in which the voltage controlled element is a bipolar transistor and the reference voltage setting circuit further includes a diode connected in series between said current limiting element and the source of said P channel MOS transistor.
Claim 4
Dependent Claim
17 words
An electronic circuit according to claim 1, in which said current limiting element comprises a P-MOS transistor.
Claim 5
Dependent Claim
23 words
An electronic circuit according to claim 3, in which said reference voltage circuit, voltage controlled element and load circuit are on one chip.
Claim 6
Dependent Claim
153 words
An electronic timepiece comprising a reference voltage generating circuit, a voltage controlled element, an oscillating circuit including a C-MOS inverter, and a power source, said reference voltage generating circuit comprising a current limiting element connected in series with a reference voltage setting circuit comprising a P channel MOS transistor and an N channel MOS transistor in which a gate of said P channel MOS transistor is connected with a gate of said N channel MOS transistor and with drains of said P channel MOS transistor and said N channel MOS transistor, said voltage controlled element being controlled by an output of a connecting point between said current limiting element and said reference voltage setting circuit, and being connected in series with said oscillating circuit for receiving constant voltage, said power source being connected with said reference voltage generating circuit in parallel with said voltage controlled element connected in series with said oscillating circuit.
Claim 7
Dependent Claim
153 words
An electronic timepiece comprising a reference voltage generating circuit, a voltage controlled element, an oscillating circuit including a C-MOS inverter, and a power source, said reference voltage generating circuit comprising a current limiting element connected in series with a reference voltage setting circuit comprising a P channel MOS transistor and an N channel MOS transistor in which a gate of said P channel MOS transistor is connected with a gate of said N channel MOS transistor and with drains of said P channel MOS transistor and said N channel MOS transistor, said voltage controlled element being controlled by an output of a connecting point between said current limiting element and said reference voltage setting circuit, and being connected in series with said oscillating circuit for receiving constant voltage, said power source being connected with said reference voltage generating circuit in parallel with said voltage controlled element connected in series with said oscillating circuit.
Claim 8
Dependent Claim
44 words
An electronic timepiece according to claim 5, in which said voltage controlled element is a bipolar transistor and said reference voltage setting circuit further includes a diode connected in series between said current limiting element and the source of said P channel MOS transistor.
Claim 9
Dependent Claim
17 words
An electronic timepiece according to claim 5, in which said current limiting element comprises a P-MOS transistor.
Claim 10
Dependent Claim
23 words
An electronic timepiece according to claim 7, in which said reference voltage circuit, voltage controlled element and oscillating circuit are on one chip.
References Cited (Backward Citations)
US3400337A
Cited
US4013979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |