SE7707777L - TONE SEQUENCE COUPLING FOR AUTHORIZED MOTOR VEHICLES - Google Patents

TONE SEQUENCE COUPLING FOR AUTHORIZED MOTOR VEHICLES

Info

Publication number
SE7707777L
SE7707777L SE7707777A SE7707777A SE7707777L SE 7707777 L SE7707777 L SE 7707777L SE 7707777 A SE7707777 A SE 7707777A SE 7707777 A SE7707777 A SE 7707777A SE 7707777 L SE7707777 L SE 7707777L
Authority
SE
Sweden
Prior art keywords
multivibrator
transistor
relays
motor vehicles
constructed
Prior art date
Application number
SE7707777A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE411729B (en
Inventor
D Nolte
Original Assignee
Westfaelische Metall Industrie
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 Westfaelische Metall Industrie filed Critical Westfaelische Metall Industrie
Publication of SE7707777L publication Critical patent/SE7707777L/en
Publication of SE411729B publication Critical patent/SE411729B/en

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Relay Circuits (AREA)
  • Alarm Systems (AREA)
  • Electronic Switches (AREA)

Abstract

An astable multivibrator is constructed from two ntn transistors (7, 16). These are coupled via capacitors (8, 9) in each case from the collector of one transistor to the base of the other transistor. The multivibrator (7, 16) has resistors (1, 3, 5, 6, 11, 13, 15, 17) and diodes (4, 14). On the one hand, the multivibrator (7, 16) is connected to the negative rail (72) and on the other hand to a switching line (71) which is switched positively at certain times. The multivibrator (7, 16) serves for alternately periodically driving the acoustic signal transmitters (HT, HH). A control device ensures the occurrence of at least one sound sequence from four tones. In order to lower the expenditure and thus the manufacturing costs, the control device is constructed as a bistable multivibrator (37, 42). Its input (85c) is connected to the on switch (Dr I) and its output (76) is connected via a diode (35) to the switching line (71) which supplies the astable multivibrator (7, 16) and the relays (19, 26) with power. The relays (19, 26) are arranged in the collector circuit of a transistor (20, 24). The control electrode of the transistor of the bistable multivibrator is connected to the contact (26a) of one of the two relays (26). <IMAGE>
SE7707777A 1976-07-15 1977-07-05 TONE FOLLOW FOR PRE-ELIGIBLE MOTOR VEHICLES SE411729B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762631758 DE2631758C3 (en) 1976-07-15 1976-07-15 Tone sequence switching device for vehicles with right of way

Publications (2)

Publication Number Publication Date
SE7707777L true SE7707777L (en) 1978-01-16
SE411729B SE411729B (en) 1980-02-04

Family

ID=5983040

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7707777A SE411729B (en) 1976-07-15 1977-07-05 TONE FOLLOW FOR PRE-ELIGIBLE MOTOR VEHICLES

Country Status (5)

Country Link
AT (1) AT364627B (en)
CH (1) CH613163A5 (en)
DE (1) DE2631758C3 (en)
NL (1) NL7707033A (en)
SE (1) SE411729B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3347063A1 (en) * 1983-12-24 1985-07-04 Günther Adolf 7000 Stuttgart Lung Acoustic traffic warning device
DE10032999C2 (en) * 2000-07-06 2002-07-11 Hella Kg Hueck & Co Control device for operating a special signal system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2261110C3 (en) * 1972-12-14 1978-07-27 Robert Bosch Gmbh, 7000 Stuttgart Switching device for acoustic signaling devices

Also Published As

Publication number Publication date
AT364627B (en) 1981-11-10
DE2631758A1 (en) 1978-01-19
NL7707033A (en) 1978-01-17
CH613163A5 (en) 1979-09-14
DE2631758B2 (en) 1979-07-26
SE411729B (en) 1980-02-04
DE2631758C3 (en) 1982-09-30
ATA448377A (en) 1981-03-15

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