CA961112A - Low battery voltage indicator for a portable digital electronic instrument - Google Patents

Low battery voltage indicator for a portable digital electronic instrument

Info

Publication number
CA961112A
CA961112A CA152,195A CA152195A CA961112A CA 961112 A CA961112 A CA 961112A CA 152195 A CA152195 A CA 152195A CA 961112 A CA961112 A CA 961112A
Authority
CA
Canada
Prior art keywords
battery voltage
digital electronic
low battery
portable digital
electronic instrument
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.)
Expired
Application number
CA152,195A
Other versions
CA152195S (en
Inventor
Thomas M. Whitney
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.)
HP Inc
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Application granted granted Critical
Publication of CA961112A publication Critical patent/CA961112A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/02—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computing Systems (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Tests Of Electric Status Of Batteries (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Electric Clocks (AREA)
CA152,195A 1971-12-09 1972-09-20 Low battery voltage indicator for a portable digital electronic instrument Expired CA961112A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20640771A 1971-12-09 1971-12-09

Publications (1)

Publication Number Publication Date
CA961112A true CA961112A (en) 1975-01-14

Family

ID=54545857

Family Applications (1)

Application Number Title Priority Date Filing Date
CA152,195A Expired CA961112A (en) 1971-12-09 1972-09-20 Low battery voltage indicator for a portable digital electronic instrument

Country Status (6)

Country Link
JP (1) JPS4871327U (en)
CA (1) CA961112A (en)
DE (1) DE2254592B2 (en)
FR (1) FR2164381A5 (en)
GB (1) GB1363175A (en)
MY (1) MY7500233A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54744Y2 (en) * 1976-03-10 1979-01-16
JPS5835471A (en) * 1981-08-28 1983-03-02 Canon Inc Detecting method for voltage of battery
GB2108342B (en) * 1981-10-20 1986-01-15 Itt Ind Ltd Power-on reset circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4839500U (en) * 1971-09-13 1973-05-17

Also Published As

Publication number Publication date
FR2164381A5 (en) 1973-07-27
DE2254592B2 (en) 1974-11-14
DE2254592A1 (en) 1973-06-14
GB1363175A (en) 1974-08-14
MY7500233A (en) 1975-12-31
JPS4871327U (en) 1973-09-07

Similar Documents

Publication Publication Date Title
CA1017806A (en) Electronic battery testing device
CA1024591A (en) Battery charging circuit
CA993044A (en) Battery charging circuit
AU469801B2 (en) Battery charging circuit
CA1025941A (en) Battery charging circuit
CA1018597A (en) Short circuit capacity measuring device
CA1034204A (en) Sensitivity coding circuit for an electronic instrument
CA961112A (en) Low battery voltage indicator for a portable digital electronic instrument
CA950969A (en) Battery tester
CA946929A (en) Battery tester
CA1033811A (en) Electrometer with low voltage indicator
CA974592A (en) Electronic battery testing device
AU503479B2 (en) Lead battery plate manufacture
CA1030823A (en) Position indicator
CA1027767A (en) Digital clock or other counting device
CA957516A (en) Battery clock wind device
SU601636A1 (en) Short-circuiting indicator
AU1756676A (en) Battery charge indicator
AU499731B2 (en) Dry-charge battery
AU476581B2 (en) Electronic percussion instrument
CA1030610A (en) High voltage measuring device
CA876956A (en) Electronic dial indicator
AU498386B2 (en) Electrical measuring instrument with spiral plate openings
AU489021B2 (en) Battery charging circuit
CA848030A (en) Electronic battery condition indicator