GB761785A - Improvements relating to electrical measuring apparatus - Google Patents

Improvements relating to electrical measuring apparatus

Info

Publication number
GB761785A
GB761785A GB3635653A GB3635653A GB761785A GB 761785 A GB761785 A GB 761785A GB 3635653 A GB3635653 A GB 3635653A GB 3635653 A GB3635653 A GB 3635653A GB 761785 A GB761785 A GB 761785A
Authority
GB
United Kingdom
Prior art keywords
double diode
source
conducts
dec
conducting
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
GB3635653A
Inventor
Dennis James Mynall
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB3635653A priority Critical patent/GB761785A/en
Publication of GB761785A publication Critical patent/GB761785A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/16—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division
    • G06G7/161—Arrangements for performing computing operations, e.g. operational amplifiers for multiplication or division with pulse modulation, e.g. modulation of amplitude, width, frequency, phase or form

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Power Engineering (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)

Abstract

761,785. Correspondence signalling. BRITISH THOMSON-HOUSTON CO., Ltd. Dec. 14, 1954 [Dec. 31, 1953], No. 36356/53. Class 40 (1). An impulse generator comprises an electromagnetic or electronic switch which co-operates with a pair of voltage sources E, E1, and an integrating amplifier A so as to produce impulses of which the mark/mark+space ratio is proportional to the ratio of the voltages from the respective sources. When V2b of the double diode V2 conducts, the output of A in due course triggers a bi-stable circuit V1 to make V1a conducting and Vlb non-conducting. V2a of the double diode then conducts and V2b effectively disconnects positive source E. Source E1 (of opposite polarity) then takes charge and conditions are reversed, the amplifier is designed so that the mean current in the lead from'the point O is substantially zero and the gain is sufficient to ensure that the input terminal remains close to earth potential throughout the cycle. In Fig. 1 (not shown) the double diode is replaced by an anode relay of V1a. Additional contacts of the relay may be included in circuit with a further voltage source and a meter.
GB3635653A 1953-12-31 1953-12-31 Improvements relating to electrical measuring apparatus Expired GB761785A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3635653A GB761785A (en) 1953-12-31 1953-12-31 Improvements relating to electrical measuring apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3635653A GB761785A (en) 1953-12-31 1953-12-31 Improvements relating to electrical measuring apparatus

Publications (1)

Publication Number Publication Date
GB761785A true GB761785A (en) 1956-11-21

Family

ID=10387395

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3635653A Expired GB761785A (en) 1953-12-31 1953-12-31 Improvements relating to electrical measuring apparatus

Country Status (1)

Country Link
GB (1) GB761785A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2019403A1 (en) * 1968-09-04 1970-07-03 Bendix Corp
FR2020526A1 (en) * 1968-09-04 1970-07-17 Bendix Corp
FR2055734A1 (en) * 1969-08-05 1971-04-30 Equip Navigation Aerienn

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2019403A1 (en) * 1968-09-04 1970-07-03 Bendix Corp
FR2020526A1 (en) * 1968-09-04 1970-07-17 Bendix Corp
FR2055734A1 (en) * 1969-08-05 1971-04-30 Equip Navigation Aerienn

Similar Documents

Publication Publication Date Title
GB1288660A (en)
GB815296A (en) Improvements relating to semi-conductor electrical waveform generators
ES469767A1 (en) Electronic watt-hour meter
GB801644A (en) Improvements in or relating to relay devices employing transistors
GB761785A (en) Improvements relating to electrical measuring apparatus
GB583027A (en) Improvements in circuit arrangements for receiving electrical pulse signals
GB842960A (en) Improvements in or relating to electric relays employing magnetic contacts in sealed protective-tubes
GB919015A (en) Transistor emitter follower
GB668430A (en) Improvements in or relating to circuit arrangements for generating impulse patterns
GB729257A (en) Impulse coincidence circuit
US3579106A (en) Loop current detector
GB1459164A (en) Electronic ignition system
GB891001A (en) An electrical contact device
GB1369688A (en) Remotely controllable electronic variable resistance
GB712800A (en) Improvements in and relating to binary digital computing devices
GB1254774A (en) Comparison amplifier
GB780833A (en) Improvements in or relating to electrical switches
JPS5774667A (en) Voltage detecting circuit
GB836027A (en) Improvements in gating circuits using transformers
GB769531A (en) Improvements in or relating to automatic computing apparatus
JPS52102659A (en) Differential amplifier
GB986724A (en) An electronic network for the conversion of a d.c. voltage into a sequence of impulses
GB791251A (en) Improvements in and relating to electrical pulse forming networks
GB1203175A (en) Quadrature rejection network
GB588872A (en) Improvements in voltage doubler circuits