GB952243A - Transistor square-wave oscillator - Google Patents

Transistor square-wave oscillator

Info

Publication number
GB952243A
GB952243A GB1790/62A GB179062A GB952243A GB 952243 A GB952243 A GB 952243A GB 1790/62 A GB1790/62 A GB 1790/62A GB 179062 A GB179062 A GB 179062A GB 952243 A GB952243 A GB 952243A
Authority
GB
United Kingdom
Prior art keywords
load
arrangement
transistors
primary
transistor
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
GB1790/62A
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 Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
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
Application filed by Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Publication of GB952243A publication Critical patent/GB952243A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H03K3/30—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 a transformer for feedback, e.g. blocking oscillator
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5383—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement
    • H02M7/53832—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement in a push-pull arrangement
    • 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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/28—Controlling the motor by varying the switching frequency of switches connected to a DC supply and the motor phases

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Inverter Devices (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

952,243. Control of A.C. motors. SIEMENSSCHUCKERTWERKE A.G. Jan. 17, 1962 [Jan. 17, 1961], No. 1790/62. Heading H2J. [Also in Division H3] The invention relates to an arrangement for generating a rectangular waveform, comprising a pair of transistors 6, 7 operating in push-pull with as common collector circuit the primary 9 of a transformer, and with their bases backcoupled to generate oscillations by means of secondary windings 10, 13 respectively. A resistor 16 between collector and base of transistor 6 provides a bias which ensures that oscillations start while diodes 24, 25 prevent excessive voltage surges being applied to the transistors. The arrangement is fed from an A.C. supply via bridge-connected rectifiers 3 and smoothing capacitors 4, 5. According to the invention the load 19 is also connected across the primary 9 of the transformer, so that the transistor collector current divides, part flowing through the primary winding and part through the load; in this way, as the loading increases the current available to drive the bases of the transistors decreases, causing the frequency of oscillation to increase. The arrangement may be used for supplying an induction motor, being adjusted to give constant speed irrespective of the load on the motor.
GB1790/62A 1961-01-17 1962-01-17 Transistor square-wave oscillator Expired GB952243A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES72086A DE1139542B (en) 1961-01-17 1961-01-17 Transistor square wave oscillator

Publications (1)

Publication Number Publication Date
GB952243A true GB952243A (en) 1964-03-11

Family

ID=7502945

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1790/62A Expired GB952243A (en) 1961-01-17 1962-01-17 Transistor square-wave oscillator

Country Status (3)

Country Link
CH (1) CH389021A (en)
DE (1) DE1139542B (en)
GB (1) GB952243A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1256721B (en) * 1964-01-25 1967-12-21 Standard Elektrik Lorenz Ag Circuit arrangement for generating a low-distortion sinusoidal voltage
US4194238A (en) * 1977-03-04 1980-03-18 Sanyo Electric Company, Ltd. Power supply apparatus
DE2755250A1 (en) * 1977-12-12 1979-06-13 Blaupunkt Werke Gmbh INVERTER
DE4011742C2 (en) * 1990-04-11 1993-10-14 Magnetek May & Christe Gmbh Push-pull inverter
DE19546874A1 (en) * 1995-12-15 1997-06-19 Leutz Elektronik Gmbh Electronic power supply for LV halogen lamps

Also Published As

Publication number Publication date
DE1139542B (en) 1962-11-15
CH389021A (en) 1965-03-15

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