CH615803GA3 - - Google Patents
Download PDFInfo
- Publication number
- CH615803GA3 CH615803GA3 CH1054475A CH1054475A CH615803GA3 CH 615803G A3 CH615803G A3 CH 615803GA3 CH 1054475 A CH1054475 A CH 1054475A CH 1054475 A CH1054475 A CH 1054475A CH 615803G A3 CH615803G A3 CH 615803GA3
- Authority
- CH
- Switzerland
- Prior art keywords
- potential
- power source
- effective
- detecting
- further electrodes
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16533—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application
- G01R19/16538—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies
- G01R19/16542—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the application in AC or DC supplies for batteries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16504—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed
- G01R19/16519—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values characterised by the components employed using FET's
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C10/00—Arrangements of electric power supplies in time pieces
- G04C10/04—Arrangements of electric power supplies in time pieces with means for indicating the condition of the power supply
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/30—Modifications for providing a predetermined threshold before switching
- H03K17/302—Modifications for providing a predetermined threshold before switching in field-effect transistor switches
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/374—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC] with means for correcting the measurement for temperature or ageing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromechanical Clocks (AREA)
- Electric Clocks (AREA)
- Measurement Of Current Or Voltage (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Electrophonic Musical Instruments (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Secondary Cells (AREA)
Abstract
An electronic timepiece battery-potential detecting circuit unaffected by temperature changes is provided. An electronic timepiece includes a DC power source such as a battery for providing an effective potential for energizing the timekeeping circuitry and display thereof. An electronic switching element is provided for detecting the effective potential of the DC power source. The electronic switching element includes a first electrode coupled to the power source for detecting the effective potential thereof, and two further electrodes defining a closed current path in response to the control electrode being referenced above a predetermined potential, the two further electrodes defining an open current path in response to the potential detected by the control electrode dropping to the predetermined potential, at least one of the further electrodes having a current temperature coefficient of substantially zero when the effective potential of the DC power source is above the predetermined potential.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9957674A JPS5634073B2 (en) | 1974-08-30 | 1974-08-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
CH615803B CH615803B (en) | 1900-01-01 |
CH615803GA3 true CH615803GA3 (en) | 1980-02-29 |
Family
ID=14250919
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1054475A CH615803B (en) | 1974-08-30 | 1975-08-13 | ELECTRONIC TIMER. |
CH257079A CH633409B (en) | 1974-08-30 | 1979-03-19 | ELECTRONIC TIMER. |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH257079A CH633409B (en) | 1974-08-30 | 1979-03-19 | ELECTRONIC TIMER. |
Country Status (7)
Country | Link |
---|---|
US (1) | US4043110A (en) |
JP (1) | JPS5634073B2 (en) |
CH (2) | CH615803B (en) |
DE (1) | DE2538406B2 (en) |
GB (1) | GB1508815A (en) |
HK (1) | HK82679A (en) |
MY (1) | MY8000210A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4140930A (en) * | 1976-07-30 | 1979-02-20 | Sharp Kabushiki Kaisha | Voltage detection circuit composed of at least two MOS transistors |
JPS5344845A (en) * | 1976-10-05 | 1978-04-22 | Suwa Seikosha Kk | Electronic watch |
JPS5941553B2 (en) * | 1977-04-26 | 1984-10-08 | セイコーエプソン株式会社 | electronic clock |
US4301380A (en) * | 1979-05-01 | 1981-11-17 | Motorola, Inc. | Voltage detector |
JPS5743526A (en) * | 1980-08-27 | 1982-03-11 | Seiko Instr & Electronics | Charge control circuit |
GB2202950B (en) * | 1987-03-17 | 1990-09-12 | Citizen Watch Co Ltd | Sensor signal processor |
US6410997B1 (en) * | 1998-04-17 | 2002-06-25 | Sarnoff Corporation | Power source for a hearing aid |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3383522A (en) * | 1965-08-30 | 1968-05-14 | Westinghouse Electric Corp | Undervoltage sensing circuit |
US3898790A (en) * | 1972-11-09 | 1975-08-12 | Citizen Watch Co Ltd | Battery-driven watch with battery consumption display alarm |
CH662773A4 (en) * | 1973-05-10 | 1976-02-27 | ||
US3912977A (en) * | 1974-05-20 | 1975-10-14 | Rca Corp | Direct current protection circuit |
US3916262A (en) * | 1974-07-23 | 1975-10-28 | Us Navy | Low voltage bus-operated overvoltage protection system |
US3991553A (en) * | 1974-10-31 | 1976-11-16 | Time Computer, Inc. | Low voltage battery indicator for a solid state watch |
-
1974
- 1974-08-30 JP JP9957674A patent/JPS5634073B2/ja not_active Expired
-
1975
- 1975-08-11 GB GB33390/75A patent/GB1508815A/en not_active Expired
- 1975-08-13 CH CH1054475A patent/CH615803B/en unknown
- 1975-08-28 DE DE2538406A patent/DE2538406B2/en not_active Withdrawn
- 1975-09-02 US US05/609,459 patent/US4043110A/en not_active Expired - Lifetime
-
1979
- 1979-03-19 CH CH257079A patent/CH633409B/en unknown
- 1979-12-06 HK HK826/79A patent/HK82679A/en unknown
-
1980
- 1980-12-30 MY MY210/80A patent/MY8000210A/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE2538406B2 (en) | 1978-09-07 |
US4043110A (en) | 1977-08-23 |
DE2538406A1 (en) | 1976-03-18 |
HK82679A (en) | 1979-12-14 |
JPS5127370A (en) | 1976-03-06 |
MY8000210A (en) | 1980-12-31 |
JPS5634073B2 (en) | 1981-08-07 |
CH633409B (en) | 1900-01-01 |
CH633409GA3 (en) | 1982-12-15 |
CH615803B (en) | 1900-01-01 |
GB1508815A (en) | 1978-04-26 |
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