GB1494259A - Current limiting and voltage stabilising circuit arrangements - Google Patents

Current limiting and voltage stabilising circuit arrangements

Info

Publication number
GB1494259A
GB1494259A GB11558/75A GB1155875A GB1494259A GB 1494259 A GB1494259 A GB 1494259A GB 11558/75 A GB11558/75 A GB 11558/75A GB 1155875 A GB1155875 A GB 1155875A GB 1494259 A GB1494259 A GB 1494259A
Authority
GB
United Kingdom
Prior art keywords
voltage
switching transistor
diode
current
winding
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
GB11558/75A
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.)
Siemens AG
Original Assignee
Siemens AG
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
Priority claimed from DE19742417628 external-priority patent/DE2417628C3/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of GB1494259A publication Critical patent/GB1494259A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
    • H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
    • H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
    • H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/338—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement
    • H02M3/3385—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement with automatic control of output voltage or current
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/1906—Control of temperature characterised by the use of electric means using an analogue comparing device
    • G05D23/1913—Control of temperature characterised by the use of electric means using an analogue comparing device delivering a series of pulses
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/20—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature
    • G05D23/24—Control of temperature characterised by the use of electric means with sensing elements having variation of electric or magnetic properties with change of temperature the sensing element having a resistance varying with temperature, e.g. a thermistor

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Cable Accessories (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Electronic Switches (AREA)
  • Motor And Converter Starters (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

1494259 D.C.-D.C. converters SIEMENS AG 20 March 1975 [10 April 1974] 11558/75 Heading H2F [Also in Division G3] A current limiting and voltage stabilizing circuit comprises a blocking oscillator formed by a switching transistor 1 and transformer 3 having a primary winding 2 and feedback winding 8. A resistor 17 is included in series with the main current path of switching transistor 1. Control of output voltage is achieved by means of a thyristor 14 connected in parallel with the series arrangement of the input electrodes of switching transistor 1 and resistor 17 and controlled in dependence on the output of a comparator 23, responsive to the difference between a reference voltage 27 and a voltage dependent on the output voltage and arranged to stabilize the voltage and to protect the circuit against over-current conditions. The voltage across feed-back winding 8 is rectified by diode 13 to provide operating voltage for thyristor 14 and by diode 20 to provide inverse bias for the gate. As described, pulses in the secondary 40 are rectified at 41 ... 44 so as to provide D.C. outputs at 45 ... 48. The input is derived from A.C. mains 57 via rectifier 65 and via terminals 4 and 16. Starting.-A mains frequency starting pulse is derived by diode 31 and pulse shaping components 32, 33 and fed to the base of switching transistor 1. Voltage stabilization and over-current protection.-A voltage dependent on the output voltage is induced in winding 5 and is rectified by diode 6 and compared by transistor 23 with a reference voltage across Zener diode 27. If this voltage is excessive, thyristor 14 is turned on so as to block the base circuit of switching transistor 1 for some cycles until started by the next mains frequency pulse. A similar action occurs in the event of over-current, since this causes an increase in voltage across resistor 17.
GB11558/75A 1974-04-10 1975-03-20 Current limiting and voltage stabilising circuit arrangements Expired GB1494259A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742417628 DE2417628C3 (en) 1974-04-10 Circuit arrangement for a switched-mode power supply with current limitation and voltage stabilization

Publications (1)

Publication Number Publication Date
GB1494259A true GB1494259A (en) 1977-12-07

Family

ID=5912729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11558/75A Expired GB1494259A (en) 1974-04-10 1975-03-20 Current limiting and voltage stabilising circuit arrangements

Country Status (13)

Country Link
AU (1) AU500629B2 (en)
BE (1) BE827791A (en)
CA (1) CA1025944A (en)
DK (1) DK139010C (en)
ES (1) ES436446A1 (en)
FI (1) FI61253C (en)
FR (1) FR2267654A1 (en)
GB (1) GB1494259A (en)
IT (1) IT1034872B (en)
NL (1) NL7504122A (en)
NO (2) NO138315C (en)
SE (2) SE406682B (en)
YU (1) YU35940B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8200616A (en) * 1982-02-17 1983-09-16 Philips Nv SWITCHED SELF-FOCUSING POWER SUPPLY CIRCUIT.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3421069A (en) * 1966-08-04 1969-01-07 Brunswick Corp Regulated power supply including a blocking oscillator and trigger means to turn off the oscillator
DE1563869A1 (en) * 1966-12-03 1970-04-09 Telefonbau & Normalzeit Gmbh Circuit arrangement for protecting a DC voltage constant holding device with a periodically switched length transistor against overload

Also Published As

Publication number Publication date
DK139010C (en) 1979-05-07
NO138316C (en) 1978-08-09
DK149775A (en) 1975-10-11
DE2417628B2 (en) 1976-07-08
FI61253B (en) 1982-02-26
NO138316B (en) 1978-05-02
IT1034872B (en) 1979-10-10
FI751068A (en) 1975-10-11
FR2267654A1 (en) 1975-11-07
NO138315C (en) 1978-08-09
SE7504143L (en) 1975-10-13
AU7963075A (en) 1976-09-30
AU500629B2 (en) 1979-05-31
DE2417628A1 (en) 1975-10-23
BE827791A (en) 1975-07-31
NO138315B (en) 1978-05-02
NO751234L (en) 1975-10-13
FI61253C (en) 1982-06-10
YU91075A (en) 1981-02-28
SE7806173L (en) 1978-05-29
ES436446A1 (en) 1977-01-01
SE407133B (en) 1979-03-12
NL7504122A (en) 1975-10-14
DK139010B (en) 1978-11-27
NO773977L (en) 1975-10-13
SE406682B (en) 1979-02-19
CA1025944A (en) 1978-02-07
FR2267654B1 (en) 1981-09-25
YU35940B (en) 1981-08-31

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee