SE302091B - - Google Patents

Info

Publication number
SE302091B
SE302091B SE220067A SE220067A SE302091B SE 302091 B SE302091 B SE 302091B SE 220067 A SE220067 A SE 220067A SE 220067 A SE220067 A SE 220067A SE 302091 B SE302091 B SE 302091B
Authority
SE
Sweden
Prior art keywords
transistor
charged
base
potential
control
Prior art date
Application number
SE220067A
Other languages
English (en)
Inventor
T Hesselgren
Original Assignee
T Hesselgren
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 T Hesselgren filed Critical T Hesselgren
Priority to SE220067A priority Critical patent/SE302091B/xx
Priority to US3555510D priority patent/US3555510A/en
Priority to GB711368A priority patent/GB1217622A/en
Priority to DE19681678010 priority patent/DE1678010A1/de
Publication of SE302091B publication Critical patent/SE302091B/xx

Links

Classifications

    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C9/00—Individual registration on entry or exit
    • G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
    • G07C9/00658—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys
    • G07C9/00674—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys with switch-buttons
    • G07C9/0069—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by passive electrical keys with switch-buttons actuated in a predetermined sequence

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Relay Circuits (AREA)
  • Lock And Its Accessories (AREA)
  • Burglar Alarm Systems (AREA)
SE220067A 1967-02-16 1967-02-16 SE302091B (cs)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE220067A SE302091B (cs) 1967-02-16 1967-02-16
US3555510D US3555510A (en) 1967-02-16 1968-02-13 Electronic combination lock with discharge control circuit means
GB711368A GB1217622A (en) 1967-02-16 1968-02-13 Control circuit, e.g. for electronic lock
DE19681678010 DE1678010A1 (de) 1967-02-16 1968-02-14 Elektronisches Schloss

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE220067A SE302091B (cs) 1967-02-16 1967-02-16

Publications (1)

Publication Number Publication Date
SE302091B true SE302091B (cs) 1968-07-01

Family

ID=20259546

Family Applications (1)

Application Number Title Priority Date Filing Date
SE220067A SE302091B (cs) 1967-02-16 1967-02-16

Country Status (4)

Country Link
US (1) US3555510A (cs)
DE (1) DE1678010A1 (cs)
GB (1) GB1217622A (cs)
SE (1) SE302091B (cs)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710136A (en) * 1971-01-27 1973-01-09 Smiths Industries Ltd Electronic combination lock
US3805246A (en) * 1972-05-08 1974-04-16 Univ Notra Dame Du Lac Coded access device

Also Published As

Publication number Publication date
GB1217622A (en) 1970-12-31
US3555510A (en) 1971-01-12
DE1678010A1 (de) 1971-12-09

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