IT1072625B - Frequency doubler for TV receiver - doubles horizontal sweep frequency using sawtooth generator and differential amplifier - Google Patents

Frequency doubler for TV receiver - doubles horizontal sweep frequency using sawtooth generator and differential amplifier

Info

Publication number
IT1072625B
IT1072625B IT2978276A IT2978276A IT1072625B IT 1072625 B IT1072625 B IT 1072625B IT 2978276 A IT2978276 A IT 2978276A IT 2978276 A IT2978276 A IT 2978276A IT 1072625 B IT1072625 B IT 1072625B
Authority
IT
Italy
Prior art keywords
frequency
horizontal sweep
doubles
receiver
differential amplifier
Prior art date
Application number
IT2978276A
Other languages
Italian (it)
Original Assignee
Rca 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
Priority claimed from GB50278/75A external-priority patent/GB1550213A/en
Priority claimed from GB50278/76A external-priority patent/GB1587518A/en
Application filed by Rca Corp filed Critical Rca Corp
Application granted granted Critical
Publication of IT1072625B publication Critical patent/IT1072625B/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/156—Arrangements in which a continuous pulse train is transformed into a train having a desired pattern

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Details Of Television Scanning (AREA)

Abstract

In a TV receiver synchronisation of the vertical sweep with the horizontal sweep is achieved using a frequency doubler which doubles the horizontal sweep frequency. The horizontal sweep frequency is applied to an input terminal of a sawtooth generator having the same frequency as the applied sweep frequency. The sawtooth waveform output is applied to a diferential input amplifier stage to obtain a square wave with leading and trailing edges occurring where the sawtooth waveform passes through a reference voltage. The amplifier output is differentiated and the pulses are shaped to produce the required output at double the input frequency.
IT2978276A 1975-12-08 1976-11-25 Frequency doubler for TV receiver - doubles horizontal sweep frequency using sawtooth generator and differential amplifier IT1072625B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB50278/75A GB1550213A (en) 1975-12-08 1975-12-08 Frequency doubler
GB50278/76A GB1587518A (en) 1976-07-21 1976-07-21 Treatment of ligneous material

Publications (1)

Publication Number Publication Date
IT1072625B true IT1072625B (en) 1985-04-10

Family

ID=26266646

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2978276A IT1072625B (en) 1975-12-08 1976-11-25 Frequency doubler for TV receiver - doubles horizontal sweep frequency using sawtooth generator and differential amplifier

Country Status (2)

Country Link
IT (1) IT1072625B (en)
SE (1) SE407886B (en)

Also Published As

Publication number Publication date
SE407886B (en) 1979-04-23
SE7613493L (en) 1977-06-09

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