GB1091162A - Improvements in chopper circuits - Google Patents

Improvements in chopper circuits

Info

Publication number
GB1091162A
GB1091162A GB2991465A GB2991465A GB1091162A GB 1091162 A GB1091162 A GB 1091162A GB 2991465 A GB2991465 A GB 2991465A GB 2991465 A GB2991465 A GB 2991465A GB 1091162 A GB1091162 A GB 1091162A
Authority
GB
United Kingdom
Prior art keywords
capacitor
transistor
outputs
conducting
pulse
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
GB2991465A
Inventor
Henryk Banasiewicz
Anthony Edward Reynolds
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.)
G&E Bradley Ltd
Original Assignee
G&E Bradley Ltd
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 G&E Bradley Ltd filed Critical G&E Bradley Ltd
Priority to GB2991465A priority Critical patent/GB1091162A/en
Publication of GB1091162A publication Critical patent/GB1091162A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
    • H03F1/303—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters using a switching device
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01—Shaping pulses

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

1,091,162. Transistor circuits; pulse modulation circuits. G. & E. BRADLEY Ltd. July 14, 1966 [July 14, 1965], No. 29914/65. Headings H3T and H4L. A chopper circuit, Fig. 1, comprises: two semi-conductor switches in series across a pair of input terminals 13, 14; a capacitor 30 also across the input terminals; a second capacitor 19 connected between the junction of the two switching devices 15, 16 and an output terminal 18; and a control source 21 which renders the two switches alternately conducting with an interval between the conducting periods when neither switch is conducting. The output terminal 18 is connected to an A.C. amplifier 20. During a control pulse of one polarity, capacitor 19 charges through transistor 15 to the potential of a D.C. input source 10 and during a pulse of the opposite polarity, it discharges through transistor 16. The control signal, Fig. 4(e), is derived from a multivibrator, Fig. 3 (not shown), giving two antiphase outputs, Fig1. 4(a), 4(b). These outputs are fed to bi-stable divider circuits which switch on the positive edge of the pulses to produce phase displaced signals, Figs. 4(c),4 (d) The outputs from the dividers are then added to produce the required control signal, Fig. 4(e).
GB2991465A 1965-07-14 1965-07-14 Improvements in chopper circuits Expired GB1091162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2991465A GB1091162A (en) 1965-07-14 1965-07-14 Improvements in chopper circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2991465A GB1091162A (en) 1965-07-14 1965-07-14 Improvements in chopper circuits

Publications (1)

Publication Number Publication Date
GB1091162A true GB1091162A (en) 1967-11-15

Family

ID=10299258

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2991465A Expired GB1091162A (en) 1965-07-14 1965-07-14 Improvements in chopper circuits

Country Status (1)

Country Link
GB (1) GB1091162A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2721371A1 (en) * 1977-03-03 1978-09-07 Bauer Messinstrumente Ag PROCESS FOR REDUCING LOSSES AND IMPROVING THE TRANSMISSION BEHAVIOR ON MEASURED VALUE TRANSMITTERS AND DEVICE FOR PERFORMING THE PROCESS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2721371A1 (en) * 1977-03-03 1978-09-07 Bauer Messinstrumente Ag PROCESS FOR REDUCING LOSSES AND IMPROVING THE TRANSMISSION BEHAVIOR ON MEASURED VALUE TRANSMITTERS AND DEVICE FOR PERFORMING THE PROCESS

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