GB549614A - Means for converting a direct voltage into a frequency proportional thereto - Google Patents

Means for converting a direct voltage into a frequency proportional thereto

Info

Publication number
GB549614A
GB549614A GB708041A GB708041A GB549614A GB 549614 A GB549614 A GB 549614A GB 708041 A GB708041 A GB 708041A GB 708041 A GB708041 A GB 708041A GB 549614 A GB549614 A GB 549614A
Authority
GB
United Kingdom
Prior art keywords
direct voltage
valve
condenser
grid
discharge
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
GB708041A
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.)
BBC Brown Boveri AG Germany
BBC Brown Boveri France SA
Original Assignee
Brown Boveri und Cie AG Germany
BBC Brown Boveri France SA
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 Brown Boveri und Cie AG Germany, BBC Brown Boveri France SA filed Critical Brown Boveri und Cie AG Germany
Priority to GB708041A priority Critical patent/GB549614A/en
Publication of GB549614A publication Critical patent/GB549614A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
    • H04N5/123—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising whereby the synchronisation signal directly commands a frequency generator

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Electrotherapy Devices (AREA)

Abstract

549,614. Relaxation oscillators. TRIGGS, W. W. (Akt.-Ges. Brown, Boveri, & Cie). June 4, 1941, No. 7080. Addition to 548,396. [Class 40 (v)] The condenser relaxation circuit for converting a variable direct voltage into a frequency proportional thereto as described in the parent Specification is modified by using a single valve both to amplify the direct voltage and to amplify the tripping impulse to discharge the condenser through a gas-filled valve. The direct voltage Vx is applied to the grid of the double-function valve 3, so as to vary the rate at which a condenser 2 is charged, from a source 5 through the valve. At the appropriate moment, determined as in the parent case by the elements 6 ... 10, an impulse passes through the transformer 11 to the grid of the valve 3, being excluded from the source Vx by a filter 12, 13. An amplified pulse appearing across the coil 14 in the anode circuit is applied to the grid of the gas-filled valve 1 to discharge the condenser 2. The discharge frequency of the condenser 2 is thus dependent on the variable direct voltage Vx.
GB708041A 1941-06-04 1941-06-04 Means for converting a direct voltage into a frequency proportional thereto Expired GB549614A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB708041A GB549614A (en) 1941-06-04 1941-06-04 Means for converting a direct voltage into a frequency proportional thereto

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB708041A GB549614A (en) 1941-06-04 1941-06-04 Means for converting a direct voltage into a frequency proportional thereto

Publications (1)

Publication Number Publication Date
GB549614A true GB549614A (en) 1942-11-30

Family

ID=9826231

Family Applications (1)

Application Number Title Priority Date Filing Date
GB708041A Expired GB549614A (en) 1941-06-04 1941-06-04 Means for converting a direct voltage into a frequency proportional thereto

Country Status (1)

Country Link
GB (1) GB549614A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511850A (en) * 1950-06-20 Voltage-regulated poweb supply

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511850A (en) * 1950-06-20 Voltage-regulated poweb supply

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