GB538064A - Improvements in periodic wave generators particularly for television - Google Patents

Improvements in periodic wave generators particularly for television

Info

Publication number
GB538064A
GB538064A GB1557/40A GB155740A GB538064A GB 538064 A GB538064 A GB 538064A GB 1557/40 A GB1557/40 A GB 1557/40A GB 155740 A GB155740 A GB 155740A GB 538064 A GB538064 A GB 538064A
Authority
GB
United Kingdom
Prior art keywords
circuit
valve
resistance
currents
load circuit
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
GB1557/40A
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.)
BAE Systems Aerospace Inc
Original Assignee
Hazeltine Corp
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 Hazeltine Corp filed Critical Hazeltine Corp
Publication of GB538064A publication Critical patent/GB538064A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor
    • H03K4/39—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as an amplifier
    • H03K4/43—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as an amplifier combined with means for generating the driving pulses
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor

Landscapes

  • Details Of Valves (AREA)
  • Amplifiers (AREA)

Abstract

538,064. Valve generating circuits. HAZELTINE CORPORATION. Jan. 25, 1940, No. 1557. Convention date, Feb. 16, 1939. [Class 40 (v)] A circuit for generating saw-tooth currents in an inductive load circuit having incidental capacity and resistance comprises a feed-back circuit having an auxiliary impedance network 19, having elements which are the inverse of the corresponding elements of the load circuit, the network being responsive (through condenser 17 and valve 16) to the conditions in the load circuit and in turn controlling the latter through condenser 20 and valve 11. The amplitude of the currents generated may be adjusted by varying resistance 13 in a circuit 13, 14 of large time constant. The frequency of the currents may be controlled by varying a resistance 18a in a circuit 18a, 18b across which is connected the control circuit of valve 16. A small adjustable resistance 15 provides a negative feed back to the grid of valve 11 to compensate for non-linearity due to decrease in the rate of rise of current in the inductance 10 during the latter part of the tracing period. Specifications 401,990 and 522,637 are referred to.
GB1557/40A 1939-02-16 1940-01-25 Improvements in periodic wave generators particularly for television Expired GB538064A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US256663A US2221015A (en) 1939-02-16 1939-02-16 Periodic wave generator

Publications (1)

Publication Number Publication Date
GB538064A true GB538064A (en) 1941-07-18

Family

ID=22973093

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1557/40A Expired GB538064A (en) 1939-02-16 1940-01-25 Improvements in periodic wave generators particularly for television

Country Status (3)

Country Link
US (1) US2221015A (en)
FR (1) FR863341A (en)
GB (1) GB538064A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2501620A (en) * 1943-04-24 1950-03-21 Bell Telephone Labor Inc Wave generating circuits
US2548532A (en) * 1945-09-29 1951-04-10 Bendix Aviat Corp Circuit for the generation of a linearly varying current
US2824230A (en) * 1954-08-02 1958-02-18 Thompson Prod Inc Sweep circuit

Also Published As

Publication number Publication date
US2221015A (en) 1940-11-12
FR863341A (en) 1941-03-29

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