GB1048478A - Improvements in flasher units - Google Patents

Improvements in flasher units

Info

Publication number
GB1048478A
GB1048478A GB38098/63A GB3809863A GB1048478A GB 1048478 A GB1048478 A GB 1048478A GB 38098/63 A GB38098/63 A GB 38098/63A GB 3809863 A GB3809863 A GB 3809863A GB 1048478 A GB1048478 A GB 1048478A
Authority
GB
United Kingdom
Prior art keywords
transistor
circuit
transistors
switch
resistor
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
GB38098/63A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1048478A publication Critical patent/GB1048478A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q11/00—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00
    • B60Q11/005—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00 for lighting devices, e.g. indicating if lamps are burning or not
    • B60Q11/007—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00 for lighting devices, e.g. indicating if lamps are burning or not the lighting devices indicating change of drive direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/34—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction
    • B60Q1/38—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating change of drive direction using immovably-mounted light sources, e.g. fixed flashing lamps
    • B60Q1/385—Electronic temporisation with relay amplification
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q11/00—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00
    • B60Q11/005—Arrangement of monitoring devices for devices provided for in groups B60Q1/00 - B60Q9/00 for lighting devices, e.g. indicating if lamps are burning or not
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B39/00—Circuit arrangements or apparatus for operating incandescent light sources
    • H05B39/09—Circuit arrangements or apparatus for operating incandescent light sources in which the lamp is fed by pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

1,048,478. Transistor oscillating circuits. ROBERT BOSCH G.m.b.H. Sept. 27, 1963 [Sept. 29, 1963], No. 38098/63. Heading H3T. [Also in Division G4] A lamp flasher unit, such as a vehicle turn indicator unit, comprises an astable multivibrator containing two transistors T1, T2, the coupling from one transistor to the other including a third transistor T3 the input circuit of which has a bias resistor 20 which conducts the lamp current, and the output circuit of which includes a resistor 25 which controls the oscillator. The collectors of the transistors T2, T3 are coupled by a high value resistor 34, and upon initially closing switch 15 both transistors T1, T2 conduct, and the circuit does not oscillate. In one embodiment, Fig. 1, the collector circuit of transistor T2 includes a relay 24 which operates when T2 conducts, to connect the base of transistor T3 to the turn indicator switch 14. When this switch is operated to select either lamps 10 or 11 the lamp current flows in the base circuit of transistor T3, which includes a temperature sensitive resistor 22, switching it on, and allowing the circuit comprising transistors T1, T2 to start oscillating. Relay 24 then alternately releases and operates to flash the lamps. Should one of the lamps fail, the change in base current of the transistor T3 will change its conductivity, and thus modify the flashing rate of the circuit. The relay 24 may be replaced by a transistor switch in the emitter circuit of transistor T2, Fig. 2 (not shown), or by a switching circuit comprising a pair of crosscoupled transistors, Fig. 3 (not shown).
GB38098/63A 1962-09-29 1963-09-27 Improvements in flasher units Expired GB1048478A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB69026A DE1191722B (en) 1962-09-29 1962-09-29 Astable multivibrator as a flasher for indicator lights

Publications (1)

Publication Number Publication Date
GB1048478A true GB1048478A (en) 1966-11-16

Family

ID=6976132

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38098/63A Expired GB1048478A (en) 1962-09-29 1963-09-27 Improvements in flasher units

Country Status (3)

Country Link
US (1) US3329868A (en)
DE (1) DE1191722B (en)
GB (1) GB1048478A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416581A1 (en) * 1978-02-06 1979-08-31 Westfaelische Metall Industrie PROTECTION DEVICE AGAINST OVERLOADS OF AN ELECTRICAL COMPONENT IN AN ASSEMBLY

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3500315A (en) * 1966-10-24 1970-03-10 Nippon Denso Co Automotive vehicle signaling system
US3710183A (en) * 1968-09-12 1973-01-09 Nippon Denso Co Flasher for vehicles
DE1803843C3 (en) * 1968-10-18 1976-01-08 Robert Bosch Gmbh, 7000 Stuttgart Astable toggle switch
US3768085A (en) * 1969-10-29 1973-10-23 Licentia Gmbh Blinker light control unit
DE1954295C2 (en) * 1969-10-29 1982-07-22 Telefunken Patentverwertungsgesellschaft Mbh, 7900 Ulm Pulse generator
US3633160A (en) * 1969-11-10 1972-01-04 Gen Motors Corp Warning-lamp pulsator
US3735196A (en) * 1970-05-25 1973-05-22 Meridian Industries Inc Flasher circuit with outage indication
LU64055A1 (en) * 1970-10-19 1972-04-21
GB1374601A (en) * 1971-01-13 1974-11-20 Lucas Industries Ltd Direction indicating systems for road vehicles
US3783337A (en) * 1971-07-14 1974-01-01 Cav Ltd Flashing lamp circuits
US3771019A (en) * 1972-06-23 1973-11-06 Meridan Ind Inc Flasher circuit
US3810149A (en) * 1972-07-03 1974-05-07 Nartron Corp Audio-visual signal device
US3858088A (en) * 1973-06-15 1974-12-31 Hope Tronics Ltd D. c. flasher
JPS528238B2 (en) * 1973-10-11 1977-03-08
DE2558717A1 (en) * 1975-12-24 1977-07-14 Rau Swf Autozubehoer FLASHER DEVICE FOR MOTOR VEHICLES
JPS5925697B2 (en) * 1976-12-25 1984-06-20 株式会社デンソー Vehicle flashing device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1042642B (en) * 1956-12-08 1958-11-06 Merk Ag Telefonbau Friedrich Bistable multivibrator with two mutually controlling transistors
US2973456A (en) * 1957-05-06 1961-02-28 Ca Nat Research Council Lamp flasher with daylight-responsive inhibiting means
DE1130500B (en) * 1957-05-06 1962-05-30 Nat Res Council Control circuit with multivibrator
US2891195A (en) * 1957-12-03 1959-06-16 Ca Nat Research Council Lamp flasher with daylight-responsive inhibiting means
US3022467A (en) * 1959-07-15 1962-02-20 Dietz Co R E Oscillator circuit with power transistor output stage
US3002127A (en) * 1959-10-14 1961-09-26 Signal Stat Corp Oscillator controlled flashing signal lamp circuit
US2972706A (en) * 1959-11-02 1961-02-21 Richard F Malm Coded navigational flashers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2416581A1 (en) * 1978-02-06 1979-08-31 Westfaelische Metall Industrie PROTECTION DEVICE AGAINST OVERLOADS OF AN ELECTRICAL COMPONENT IN AN ASSEMBLY

Also Published As

Publication number Publication date
DE1191722C2 (en) 1966-02-10
DE1191722B (en) 1965-04-22
US3329868A (en) 1967-07-04

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