DK577884A - NOTIFICATION TO ENABLE A SOUND SOURCE OR OTHER ALARM - Google Patents

NOTIFICATION TO ENABLE A SOUND SOURCE OR OTHER ALARM Download PDF

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Publication number
DK577884A
DK577884A DK577884A DK577884A DK577884A DK 577884 A DK577884 A DK 577884A DK 577884 A DK577884 A DK 577884A DK 577884 A DK577884 A DK 577884A DK 577884 A DK577884 A DK 577884A
Authority
DK
Denmark
Prior art keywords
alarm
power supply
circuit
notification
enable
Prior art date
Application number
DK577884A
Other languages
Danish (da)
Other versions
DK151737C (en
DK577884D0 (en
DK151737B (en
Inventor
Knud Harald Storm Johansen
Original Assignee
Servodan A S
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 Servodan A S filed Critical Servodan A S
Priority to DK577884A priority Critical patent/DK151737C/en
Publication of DK577884D0 publication Critical patent/DK577884D0/en
Publication of DK577884A publication Critical patent/DK577884A/en
Publication of DK151737B publication Critical patent/DK151737B/en
Application granted granted Critical
Publication of DK151737C publication Critical patent/DK151737C/en

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  • Geophysics And Detection Of Objects (AREA)
  • Burglar Alarm Systems (AREA)

Abstract

A monitor for non-contact detection of a person or an object 7 has a sensor 20 of, for example, light or ultrasound type, which is connected to a monostable circuit 1, which by its output can drive a relay 8, whose contact can close a circuit 2', 5 for activation of an alarm or clock. In the non-activated condition, the system draws power through the clock by means of lines 9, 10, 17, 18, a diode bridge 13 and a diode 15. When the alarm is activated, the power supply lines 9, 10 are short- circuited, and a capacitor 16 provides the power supply of the circuit 19 in the activation period. This achieves a durable, simple, reliable and cheap arrangement, which can be connected as is to an existing monitor and make use of its power supply. <IMAGE>
DK577884A 1984-12-05 1984-12-05 NOTIFICATION TO ENABLE A SOUND SOURCE OR OTHER ALARM DK151737C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK577884A DK151737C (en) 1984-12-05 1984-12-05 NOTIFICATION TO ENABLE A SOUND SOURCE OR OTHER ALARM

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK577884A DK151737C (en) 1984-12-05 1984-12-05 NOTIFICATION TO ENABLE A SOUND SOURCE OR OTHER ALARM
DK577884 1984-12-05

Publications (4)

Publication Number Publication Date
DK577884D0 DK577884D0 (en) 1984-12-05
DK577884A true DK577884A (en) 1986-06-06
DK151737B DK151737B (en) 1987-12-28
DK151737C DK151737C (en) 1988-06-13

Family

ID=8145182

Family Applications (1)

Application Number Title Priority Date Filing Date
DK577884A DK151737C (en) 1984-12-05 1984-12-05 NOTIFICATION TO ENABLE A SOUND SOURCE OR OTHER ALARM

Country Status (1)

Country Link
DK (1) DK151737C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI13109Y1 (en) * 2021-11-11 2022-02-04 Innotrafik Oy Signalling device

Also Published As

Publication number Publication date
DK151737C (en) 1988-06-13
DK577884D0 (en) 1984-12-05
DK151737B (en) 1987-12-28

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