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GB611568A - Improvements in or relating to electric pulse time modulators - Google Patents

Improvements in or relating to electric pulse time modulators

Info

Publication number
GB611568A
GB611568A GB13359/46A GB1335946A GB611568A GB 611568 A GB611568 A GB 611568A GB 13359/46 A GB13359/46 A GB 13359/46A GB 1335946 A GB1335946 A GB 1335946A GB 611568 A GB611568 A GB 611568A
Authority
GB
United Kingdom
Prior art keywords
cusper
resistors
source
biasses
push
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
GB13359/46A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB611568A publication Critical patent/GB611568A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/46—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC
    • G05F1/52—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using discharge tubes in series with the load as final control devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Amplifiers (AREA)

Abstract

611,568. Pulse modulation. STANDARD TELEPHONES & .CABLES, Ltd. May 2, 1946, No. 13359. Convention date, May 19, 1944. [Class 40 (v)] In a cusper circuit for. producing timemodulated pulses in which the base wave oscillator 3 and push-pull cusper valves 13, 14 are all supplied from a source 1 of unregulated voltage, the cusper unbalancing means are arranged so as to compensate for fluctuations in the voltage source and to maintain the unmodulated wave cusp timing invariable. As shown, the unequal cathode biasses of triodes 13, 14 are produced by the potential drop across cathode resistors 22, 20 in the former case and resistor 20 alone in the latter case, the anode voltages and the resistors being so proportioned that, with varying anode voltages, the respective grid biasses remain equally spaced about the anode current cut-off value. Modulation is produced by push-pull audio-frequency potentials applied to grids 11, 12 from microphone 18 and transformer 17. In a modification, the resistors 22, 20 form part of a potential divider across the unregulated source, Fig. 3 (not shown). Specification 586,098 is referred to.
GB13359/46A 1944-05-19 1946-05-02 Improvements in or relating to electric pulse time modulators Expired GB611568A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US536302A US2441964A (en) 1944-05-19 1944-05-19 Compensating circuit

Publications (1)

Publication Number Publication Date
GB611568A true GB611568A (en) 1948-11-01

Family

ID=24137944

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13359/46A Expired GB611568A (en) 1944-05-19 1946-05-02 Improvements in or relating to electric pulse time modulators

Country Status (5)

Country Link
US (1) US2441964A (en)
CH (1) CH259967A (en)
ES (1) ES175485A1 (en)
FR (1) FR930580A (en)
GB (1) GB611568A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2975366A (en) * 1946-03-27 1961-03-14 Donald R Young Pulse width discriminator
US2888849A (en) * 1955-09-14 1959-06-02 Humphrey Electronic musical instruments

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL44199C (en) * 1935-01-15
US1541311A (en) * 1923-02-07 1925-06-09 Western Electric Co Vacuum-tube circuits
NL22927C (en) * 1925-11-28
DE603008C (en) * 1928-07-04 1934-09-20 Telefunken Gmbh Circuit for mains supply of a glow cathode tube
US2009070A (en) * 1931-11-28 1935-07-23 Telefunken Gmbh Power supply means for vacuum tubes
US2039113A (en) * 1931-12-01 1936-04-28 Telefunken Gmbh Amplifier circuits
US1996378A (en) * 1931-12-21 1935-04-02 Charles J Hirsch Hum elimination
US2078245A (en) * 1933-06-19 1937-04-27 Telefunken Gmbh Modulation and frequency stabilization
BE479302A (en) * 1935-08-12
US2174154A (en) * 1936-05-06 1939-09-26 Rca Corp Ultra high frequency transmitter
US2223430A (en) * 1938-01-25 1940-12-03 Rca Corp Modulation system
US2184571A (en) * 1938-05-27 1939-12-26 Rca Corp Modulation system

Also Published As

Publication number Publication date
US2441964A (en) 1948-05-25
CH259967A (en) 1949-02-15
ES175485A1 (en) 1946-12-01
FR930580A (en) 1948-01-29

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