GB844872A - Improvements in "function generator" - Google Patents

Improvements in "function generator"

Info

Publication number
GB844872A
GB844872A GB20301/57A GB2030157A GB844872A GB 844872 A GB844872 A GB 844872A GB 20301/57 A GB20301/57 A GB 20301/57A GB 2030157 A GB2030157 A GB 2030157A GB 844872 A GB844872 A GB 844872A
Authority
GB
United Kingdom
Prior art keywords
output
terminal
pulses
pulse
rate
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
GB20301/57A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB844872A publication Critical patent/GB844872A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K21/00—Details of pulse counters or frequency dividers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/06—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into an amplitude of current or voltage
    • G01R23/09—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into an amplitude of current or voltage using analogue integrators, e.g. capacitors establishing a mean value by balance of input signals and defined discharge signals or leakage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/10—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into a train of pulses, which are then counted, i.e. converting the signal into a square wave
    • 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
    • G06G7/26—Arbitrary function generators
    • G06G7/28—Arbitrary function generators for synthesising functions by piecewise approximation
    • 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
    • G06G7/48—Analogue computers for specific processes, systems or devices, e.g. simulators
    • G06G7/62—Analogue computers for specific processes, systems or devices, e.g. simulators for electric systems or apparatus
    • G06G7/625—Analogue computers for specific processes, systems or devices, e.g. simulators for electric systems or apparatus for filters; for delay lines
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K9/00—Demodulating pulses which have been modulated with a continuously-variable signal
    • H03K9/06—Demodulating pulses which have been modulated with a continuously-variable signal of frequency- or rate-modulated pulses

Landscapes

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

Abstract

844,872. Frequency detectors. GENERAL ELECTRIC CO. June 27,1957 [June 29,1956],No. 20301/57. Class 40(5). [Also in Group XXXVI] The mean pulse rate of pulses generated by a random pulse source 53 may be measured by applying them to a bi-stable valve circuit 57 whose output is alternately positive and negative pulses applied to several parallel branches of series R-C, R-L or L-C circuits forming a network 60 with output applied to a full-wave rectifier circuit 63, 64, C. The values of R, C or L in each branch may be determined by inverse Laplace transforms so that the mean current output is proportional to log (1 + rT) where r is the pulse rate and T a constant, or to rα where is a constant less than unity. In theory an infinite number of parallel branches corresponding to terms of an infinite series should be used but a finite number of branches produces an approximation. The double diode 56 permits pulses to be semidirectionally injected into the system. The pulse source 53 may be a radiation detector of the proportional counter or scintillation type with output applied through a back biased triode controlling the output pulse rate. Moreover the ratemeter can be inversely operated by applying a control wave to the output capacitor C so that the D.C. amplifier 55 responds to the difference between the ratemeter output and control wave and controls the mean rate of pulse generation at terminal 52 in accordance with the control wave at terminal 51 and the design of network 60, i.e. the pulse rate may be an exponential or other function of the control current at terminal 51. Finally, the variable rate pulses at 52 may be applied to a further ratemeter circuit similar to 54 but with a different synthesized network 60 so that a function is generated from its rectified output related to the function applied at terminal 51.
GB20301/57A 1956-06-29 1957-06-27 Improvements in "function generator" Expired GB844872A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US594839A US2986704A (en) 1956-06-29 1956-06-29 Function generator

Publications (1)

Publication Number Publication Date
GB844872A true GB844872A (en) 1960-08-17

Family

ID=24380620

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20301/57A Expired GB844872A (en) 1956-06-29 1957-06-27 Improvements in "function generator"

Country Status (5)

Country Link
US (1) US2986704A (en)
DE (1) DE1252800B (en)
FR (1) FR1187745A (en)
GB (1) GB844872A (en)
NL (1) NL218516A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3210558A (en) * 1959-11-25 1965-10-05 Ibm Periodic waveform generator
US3120647A (en) * 1961-07-26 1964-02-04 Houston Instr Corp Logarithmic frequency discriminator circuits
GB1198620A (en) * 1966-12-20 1970-07-15 Rank Organisation Ltd Improvements in or relating to Afterglow Correcting Circuit Arrangements.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2658189A (en) * 1948-01-09 1953-11-03 Bell Telephone Labor Inc Signaling system based on orthogonal functions
NL84059C (en) * 1948-02-26
US2549065A (en) * 1948-11-02 1951-04-17 Bell Telephone Labor Inc Frequency discriminative electric transducer
US2730679A (en) * 1951-05-18 1956-01-10 George A Philbrick Delayed-recovery electric filter network
US2842733A (en) * 1954-11-01 1958-07-08 Itt Function generator

Also Published As

Publication number Publication date
DE1252800B (en) 1967-10-26
NL218516A (en)
US2986704A (en) 1961-05-30
FR1187745A (en) 1959-09-15

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