JPS5537913A - Exchange time informing device for battery - Google Patents

Exchange time informing device for battery

Info

Publication number
JPS5537913A
JPS5537913A JP11051878A JP11051878A JPS5537913A JP S5537913 A JPS5537913 A JP S5537913A JP 11051878 A JP11051878 A JP 11051878A JP 11051878 A JP11051878 A JP 11051878A JP S5537913 A JPS5537913 A JP S5537913A
Authority
JP
Japan
Prior art keywords
battery
comparator
load
exchange time
time
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
Application number
JP11051878A
Other languages
Japanese (ja)
Inventor
Hideo Nagano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP11051878A priority Critical patent/JPS5537913A/en
Publication of JPS5537913A publication Critical patent/JPS5537913A/en
Pending legal-status Critical Current

Links

Landscapes

  • Tests Of Electric Status Of Batteries (AREA)

Abstract

PURPOSE: To inform the exchange time of the battery effectively and stably by providing a series circuit of load resistor and automatic iteration switch and a comparator between the positve and negative electrodes of the using battery.
CONSTITUTION: Between the negative and the positive electrodes of the using battery, the series circuit comprising a load resistor RL2 and a transistor Q3 operating as an automatic iteration switch 3 and a comparator 4 are connected. In case the internal resistance of the battery 1 is increased more than the value within the employable limit, in accordance with the difference voltage between the terminal voltage at the time of load of the battery and the terminal voltage at the time of non-load thereof generated from the comparator 4, the electronic buzzer 5 is driven to inform that the life of the battery 1 comes near to the employable limit by alarm.
COPYRIGHT: (C)1980,JPO&Japio
JP11051878A 1978-09-08 1978-09-08 Exchange time informing device for battery Pending JPS5537913A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11051878A JPS5537913A (en) 1978-09-08 1978-09-08 Exchange time informing device for battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11051878A JPS5537913A (en) 1978-09-08 1978-09-08 Exchange time informing device for battery

Publications (1)

Publication Number Publication Date
JPS5537913A true JPS5537913A (en) 1980-03-17

Family

ID=14537818

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11051878A Pending JPS5537913A (en) 1978-09-08 1978-09-08 Exchange time informing device for battery

Country Status (1)

Country Link
JP (1) JPS5537913A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5281330A (en) * 1990-04-20 1994-01-25 Nippondenso Co., Ltd. Water purifier

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5281330A (en) * 1990-04-20 1994-01-25 Nippondenso Co., Ltd. Water purifier

Similar Documents

Publication Publication Date Title
JPS5421337A (en) Display method for level check and its circuit
JPS5537913A (en) Exchange time informing device for battery
JPS5644868A (en) Residual amount indicating device of battery
JPS5320555A (en) Constant current circuit
JPS5414272A (en) Electronic watch
JPS5457984A (en) Semiconductor light emitting device
JPS5438523A (en) Inverter
JPS55142273A (en) Electronic watch
JPS5717031A (en) Power supply circuit
JPS52102630A (en) Autoclear circuit
JPS5547519A (en) Constant current circuit
JPS52118545A (en) Power source reset circuit
JPS5547518A (en) Constant current circuit
JPS54155446A (en) Power unit
JPS5484225A (en) Switching power source circuit
JPS54111743A (en) Switch circuit
JPS5377454A (en) Oscillator circuit
JPS5392450A (en) Current limiting device
JPS57115030A (en) Power-on reset circuit
JPS5261915A (en) Demagnetization circuit
JPS5313345A (en) Off-delay timer circuit
JPS5681475A (en) Electronic wrist watch
JPS5672534A (en) Logical circuit
JPS5573136A (en) Timer circuit
JPS5265835A (en) Switch circuit