JPS54103381A - Battery voltage detecting circuit - Google Patents
Battery voltage detecting circuitInfo
- Publication number
- JPS54103381A JPS54103381A JP1010978A JP1010978A JPS54103381A JP S54103381 A JPS54103381 A JP S54103381A JP 1010978 A JP1010978 A JP 1010978A JP 1010978 A JP1010978 A JP 1010978A JP S54103381 A JPS54103381 A JP S54103381A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- battery
- conduct
- terminal
- divided
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
PURPOSE: To detect the battery voltage in a short time and prevent unnecessary consumption of battery power, by comparing the divided voltage proportional to the battery voltage generated in response to a detection command voltage of narrow pulse width at low voltage with a specified voltage.
CONSTITUTION: When a detection command voltage of narrow pulse width is applied at low voltage, when required, to a terminal 11 of a battery voltage applying part 4, a transistor 10 is made to conduct, so that the voltage divided by resistances 8, 9 proportional to the voltage of a battery 1 is applied to a differential amplification transistor 12 in a voltage detecting part 5. To the other differential amplification transistor 16 is applied a reference voltage which is applied from a terminal 13 and divided by resistances 14, 15. When the voltage of the battery 1 is less than the reference voltage, the transistor 12 does not conduct. Therefore, a battery voltage normal signal is not generated from a terminal 23 through transistors 17, 21 which are made to conduct when the voltage of the battery 1 is higher than the reference voltage, so that the battery voltage may be judged in a short time.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1010978A JPS54103381A (en) | 1978-01-31 | 1978-01-31 | Battery voltage detecting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1010978A JPS54103381A (en) | 1978-01-31 | 1978-01-31 | Battery voltage detecting circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54103381A true JPS54103381A (en) | 1979-08-14 |
Family
ID=11741138
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1010978A Pending JPS54103381A (en) | 1978-01-31 | 1978-01-31 | Battery voltage detecting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54103381A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51126184A (en) * | 1975-03-28 | 1976-11-04 | Hitachi Ltd | Voltage detecting circuit |
-
1978
- 1978-01-31 JP JP1010978A patent/JPS54103381A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51126184A (en) * | 1975-03-28 | 1976-11-04 | Hitachi Ltd | Voltage detecting circuit |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5373340A (en) | Abnormal voltage detection circuit | |
JPS5326175A (en) | Electronic watch | |
JPS5733493A (en) | Semiconductor storage device | |
JPS5717226A (en) | Integrated circuit | |
JPS54103381A (en) | Battery voltage detecting circuit | |
JPS51127774A (en) | Temperature compensation circuit for radiant ray detector | |
JPS5219925A (en) | Memory unit | |
JPS52102657A (en) | Transistor amplifier circuit | |
JPS5624567A (en) | Humidity measuring system | |
JPS5312218A (en) | Automatic detection range setting circuit | |
JPS52122825A (en) | Dc-dc converter | |
JPS5437448A (en) | Overload detecting circuit of power amplifier | |
JPS5616311A (en) | Transistor circuit | |
JPS52143076A (en) | Level detection circuit | |
JPS5523475A (en) | Measuring instrument for indentation hardness | |
JPS57206185A (en) | Convergence device | |
JPS55129760A (en) | Reversing detection circuit for motor | |
JPS5333672A (en) | Voltage supervising circuit | |
JPS5249867A (en) | Voltage level detecting circuit of complementary type field effect ele ment integrated circuits | |
JPS5517279A (en) | Circuit for detecting load short-circuit | |
JPS5377448A (en) | Trouble detection unit of direct current amplifier | |
JPS5324869A (en) | Current detecting circuit | |
JPS5660115A (en) | Fail-safe type noncontact relay | |
JPS5439667A (en) | Current measuring circuit | |
JPS5360671A (en) | Resistance detecting circuit |