US2094677A - Screen apparatus for television receivers - Google Patents

Screen apparatus for television receivers Download PDF

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Publication number
US2094677A
US2094677A US70425A US7042536A US2094677A US 2094677 A US2094677 A US 2094677A US 70425 A US70425 A US 70425A US 7042536 A US7042536 A US 7042536A US 2094677 A US2094677 A US 2094677A
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US
United States
Prior art keywords
television receivers
screen apparatus
resistance
condenser
amplifier
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 - Lifetime
Application number
US70425A
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English (en)
Inventor
Schlesinger Kurt
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Individual
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Individual
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Publication date
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Publication of US2094677A publication Critical patent/US2094677A/en
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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K6/00—Manipulating pulses having a finite slope and not covered by one of the other main groups of this subclass
    • H03K6/02—Amplifying pulses

Definitions

  • Fig. 1 shows a circuit diagram sequent amplifier 5, a coupling member which of a scanning apparatus constructed according to already discloses a declining degree of transmisthe invention.
  • sion in the case of the basic frequency of the Fig. 2 shows a saw-tooth voltage curve plotted relation oscillation-a so-called high-pass. With respect to the time.
  • Fig. l the high-pass according to the in- 15
  • Fig. 1 there is shown a typical relaxationvention is designated in, H.
  • the basic frequency oscillation connection system in which a 0011- of the relaxation oscillation is no longer able to denser 2 is charged through the medium of a traverse the condenser Ill.
  • the curve of the voltage applied to o 1 1 6 ds the grid of valve 5 is represented by Ill and has a g up 0 X 2 g f strictly linear ascent.
  • the voltage capable of bez g ig ig 6 6 ing utilized at the Braun tube 9 is always as rep- Resistance 5: me Ohm .0 resented by the curve ll.
  • This distortion is not g 4.0 to be explained by incorrect adjustment of the The basic frequency in the case of this high grid bias of 5, but still remains even if the valve 5 pass is weakened in a ratio of has been carefully adjusted to operate on the linear range of its characteristic.
  • the explanation 10 45 for the error is to be found in a curvature in the i. e., by 10%, and the high frequency is transcharacteristic occurring in general in the case of mitted without loss. It is possible with highelectronic tubes.
  • the error itself is merely of pass couplings of this kind, which according to the order of a small percentage, i. e., is very small.
  • the invention may also be introduced into later According to Langmuirs law of emission, the circuits, for example before the Braun tube, to 50 steepness of a characteristic must increase with perform a compensation of the natural curvature the anode current. As a matter of fact there is of the characteristic of the tube.
  • a scanning apparatus for television receivers comprising a relaxation oscillation generator, said generator producing voltages of saw-tooth wave form having higher frequency and lower frequency components, an amplifier and. coupling means comprising means for passing said higher frequency components better than said lower frequency components for coupling said amplifier with said relaxation oscillation generator.
  • a scanning apparatus for television receivers ccmprising'a relaxation oscillation generator, said generator producing voltages of saw-tooth wave form having higher frequency and lower fre- The quency components
  • an amplifier and coupling 7 means comprising means for passing said higher frequency components better than said lower frequency components for coupling said amplifier with said relaxation oscillation generator, said means consisting of a condenser and a resistance connected in parallel.
  • a scanning apparatus for television receivers comprising a relaxation oscillation generator, said generator producing voltages of saw-tooth wave form having higher frequency and lower frequency components, an amplifier and coupling means comprising means for passing said higher frequency components better than said lower frequency components for coupling said amplifier with said relaxation oscillation generator, said means consistingof a resistance and a choke connected in series.

Landscapes

  • Details Of Television Scanning (AREA)
  • Amplifiers (AREA)
  • Burglar Alarm Systems (AREA)
  • Circuits Of Receivers In General (AREA)
US70425A 1935-03-29 1936-03-23 Screen apparatus for television receivers Expired - Lifetime US2094677A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE459422X 1935-03-29

Publications (1)

Publication Number Publication Date
US2094677A true US2094677A (en) 1937-10-05

Family

ID=6539584

Family Applications (1)

Application Number Title Priority Date Filing Date
US70425A Expired - Lifetime US2094677A (en) 1935-03-29 1936-03-23 Screen apparatus for television receivers

Country Status (6)

Country Link
US (1) US2094677A (fr)
AT (1) AT148672B (fr)
CH (1) CH187275A (fr)
DK (1) DK55313C (fr)
FR (1) FR803844A (fr)
GB (1) GB459422A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426179A (en) * 1942-06-19 1947-08-26 Int Standard Electric Corp Electrical relaxation oscillator
US2607897A (en) * 1946-06-13 1952-08-19 Thomas E Fairbairn Oscillator
US2662981A (en) * 1950-10-04 1953-12-15 Raytheon Mfg Co Wave form generating circuits
US3034071A (en) * 1959-11-25 1962-05-08 John J Matysek Exponential backward sweep wave voltage generator which can be arrested at any level

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE756444C (de) * 1939-05-13 1953-01-19 Aeg Anordnung zum Linearisieren von aus Teilen einer Exponentialkurve bestehenden Kippschwingungen
DE763579C (de) * 1941-07-25 1954-03-15 Georg Seibt Nachf Dr Schaltung zum Erzeugen von Kippspannungen mit saegezahnartigem Verlauf durch Ladung und Entladung eines Kondensators

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2426179A (en) * 1942-06-19 1947-08-26 Int Standard Electric Corp Electrical relaxation oscillator
US2607897A (en) * 1946-06-13 1952-08-19 Thomas E Fairbairn Oscillator
US2662981A (en) * 1950-10-04 1953-12-15 Raytheon Mfg Co Wave form generating circuits
US3034071A (en) * 1959-11-25 1962-05-08 John J Matysek Exponential backward sweep wave voltage generator which can be arrested at any level

Also Published As

Publication number Publication date
GB459422A (en) 1937-01-07
AT148672B (de) 1937-02-25
DK55313C (da) 1938-10-10
FR803844A (fr) 1936-10-09
CH187275A (de) 1936-10-31

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