GB1078221A - Improvements in or relating to speed controlled electronic switching devices - Google Patents

Improvements in or relating to speed controlled electronic switching devices

Info

Publication number
GB1078221A
GB1078221A GB42227/64A GB4222764A GB1078221A GB 1078221 A GB1078221 A GB 1078221A GB 42227/64 A GB42227/64 A GB 42227/64A GB 4222764 A GB4222764 A GB 4222764A GB 1078221 A GB1078221 A GB 1078221A
Authority
GB
United Kingdom
Prior art keywords
speed
multivibrator
shaft
predetermined speed
pulses
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
GB42227/64A
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 GB1078221A publication Critical patent/GB1078221A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/07—Indicating devices, e.g. for remote indication
    • G01P1/08—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers
    • G01P1/10—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers for indicating predetermined speeds
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/011—Automatic controllers electric details of the correcting means
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/066—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current using a periodic interrupter, e.g. Tirrill regulator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/28—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback
    • H03K3/281—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator
    • H03K3/286—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using means other than a transformer for feedback using at least two transistors so coupled that the input of one is derived from the output of another, e.g. multivibrator bistable

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Direct Current Motors (AREA)
  • Relay Circuits (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

1,078,221. Transistor pulse circuits. ROBERT BOSCH G.m.b.H. Oct. 16, 1964 [Oct. 17, 1963], No. 42227/64. Heading H3T. [Also in Divisions G1 and G3] In an electronic switch which operates in dependence on the rotational speed of a shaft, electric pulses of frequency directly proportional, and duration inversely proportional, to the said speed are generated in a pulse source 10 and are applied to a bi-stable multivibrator 11 via two parallel RC circuits N1, N2 to cause multivibrator 11 to change its state at a first predetermined speed when the shaft is accelerating and to revert at a second predetermined speed when the shaft is slowing down. As shown, pulse source 10 comprises a camcontrolled contact breaker and a D.C. supply; alternatively an inductive or photo-electric generator may be used. Below the first predetermined speed, transistor T 2 in multivibrator 11 is conducting; at this speed, however, due to the decreasing duration of the pulses fed to N2, diode 40 starts to pass trigger pulses to the input E2 of multivibrator 11, causing the latter to switch to a condition in which T 1 is conducting. When the speed of the shaft falls to the second predetermined speed, diode 33 in N1 begins to pass pulses to input E1 of 11, so causing a reversion to the original state. The load resistors 41, 42 in the collector circuits of T 1 , T 2 respectively, may comprise relay coils in a system adapted to maintain the speed of an electric motor between the two predetermined speeds. In a modification, Fig. 5 (not shown), only one RC circuit (N2) is provided, and a signalling lamp (70) in the collector circuit of T 1 is illuminated when a predetermined speed is exceeded; artificial hysteresis is imparted by a series RC circuit (72, 73) between N 2 and the collector of T 2 , or, alternatively, by connecting the emitters of T 1 and T 2 to the positive line 31 through a common resistor (74), which is shunted by a capacitor (75). Fig. 6 (not shown) depicts a monostable multivibrator which may replace the bi-stable switch 11.
GB42227/64A 1963-10-17 1964-10-16 Improvements in or relating to speed controlled electronic switching devices Expired GB1078221A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB73910A DE1220179B (en) 1963-10-17 1963-10-17 Arrangement for the limit speed measurement of a shaft

Publications (1)

Publication Number Publication Date
GB1078221A true GB1078221A (en) 1967-08-09

Family

ID=6978037

Family Applications (1)

Application Number Title Priority Date Filing Date
GB42227/64A Expired GB1078221A (en) 1963-10-17 1964-10-16 Improvements in or relating to speed controlled electronic switching devices

Country Status (8)

Country Link
US (1) US3264496A (en)
JP (1) JPS426613B1 (en)
AT (1) AT263147B (en)
DE (1) DE1220179B (en)
FR (1) FR1412649A (en)
GB (1) GB1078221A (en)
NL (1) NL146665B (en)
SE (1) SE322424B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3365614A (en) * 1965-05-06 1968-01-23 Westinghouse Electric Corp Apparatus for detecting substantially zero speed of a rotatable device
US3403269A (en) * 1966-04-25 1968-09-24 Techrand Corp Of America Frequency responsive rc timing circuit for detecting either lack of input or overextended presence of input
FR2081174B1 (en) * 1970-03-13 1974-03-01 Radiotechnique Compelec
US3597653A (en) * 1970-04-17 1971-08-03 Gen Electric Digital low speed switch
DE2055874A1 (en) * 1970-11-13 1972-05-18 Robert Bosch Gmbh, 7000 Stuttgart Speed control device for an internal combustion engine
GB1305696A (en) * 1971-04-03 1973-02-07
FR2135052B1 (en) * 1971-05-04 1974-03-08 Dba
DE2740771C3 (en) * 1977-09-09 1982-04-29 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for generating an output signal proportional to the speed from a pulse train with a frequency proportional to the speed
US4233563A (en) * 1978-09-06 1980-11-11 Schanbacher William A Frequency selective hysteresis comparator
FR2484752A1 (en) * 1980-06-13 1981-12-18 Thomson Brandt SOUND STOP DEVICE FOR TELEVISION, AND TELEVISION COMPRISING SUCH A DEVICE
US4845379A (en) * 1988-07-05 1989-07-04 International Business Machines Corporation Sense circuit for detecting absence of a pulse train
US5103213A (en) * 1990-06-25 1992-04-07 Bindicator Company Shaft rotation monitoring apparatus
CN109407593A (en) * 2018-12-19 2019-03-01 浙江大学滨海产业技术研究院 A kind of list I/O expansion system and extended method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB337500A (en) * 1929-08-19 1930-11-06 Philips Nv Improvements in or relating to speed-controlling devices
DE1077257B (en) * 1957-09-24 1960-03-10 Olympia Werke Ag Device for glow lamp display of the switching status of bistable multivibrators with transistors
DE1175033B (en) * 1959-06-26 1964-07-30 Bosch Gmbh Robert Fuel injection system for internal combustion engines
US3090005A (en) * 1959-09-01 1963-05-14 Daystrom Inc Electronic pulse repetition rate indicator
US3149243A (en) * 1961-07-14 1964-09-15 Int Standard Electric Corp Radio receiver including a monitoring circuit indicating an output upon input exceeding predetermined frequency
US3171041A (en) * 1961-07-20 1965-02-23 Charles W Haase Single input gate controlling circuit
US3240124A (en) * 1963-06-12 1966-03-15 Lockheed Aircraft Corp Hydraulic servomechanism

Also Published As

Publication number Publication date
DE1220179B (en) 1966-06-30
US3264496A (en) 1966-08-02
AT263147B (en) 1968-07-10
SE322424B (en) 1970-04-06
NL6412067A (en) 1965-04-20
NL146665B (en) 1975-07-15
FR1412649A (en) 1965-10-01
JPS426613B1 (en) 1987-03-17

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