GB1162520A - Transistor Television Horizontal Scan Generator. - Google Patents

Transistor Television Horizontal Scan Generator.

Info

Publication number
GB1162520A
GB1162520A GB4668066A GB4668066A GB1162520A GB 1162520 A GB1162520 A GB 1162520A GB 4668066 A GB4668066 A GB 4668066A GB 4668066 A GB4668066 A GB 4668066A GB 1162520 A GB1162520 A GB 1162520A
Authority
GB
United Kingdom
Prior art keywords
transistor
during
scan
capacitor
diode
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
GB4668066A
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.)
Space Systems Loral LLC
Original Assignee
Philco Ford 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 Philco Ford Corp filed Critical Philco Ford Corp
Publication of GB1162520A publication Critical patent/GB1162520A/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
    • H03K4/48—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices
    • H03K4/60—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth current is produced through an inductor
    • H03K4/62—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements semiconductor devices in which a sawtooth current is produced through an inductor using a semiconductor device operating as a switching device

Abstract

1,162,520. Transistor sawtooth circuits. PHILCO-FORD CORP. 19 Oct., 1966 [19 Oct., 1965], No. 46680/66. Heading H3T. A line deflection output stage, e.g. for a portable television receiver, is arranged to be operated from a lower voltage supply 16 by connecting the supply 16 via diode 18 to a tapping on the output transformer 12 intermediate the connections to the storage capacitor 11 and the collector of the output transistor 10, so as to consume a constant current during the scan. If a 12-volt supply 16 is employed, the effective operating voltage across capacitor 11 may be 30 volts. During the first half of each line scan, energy stored in the yoke 13 causes current to circulate through the damping diode 15, capacitor 11 and capacitor 14, storing energy in capacitor 11 which is utilized during the second half of the scan by current through the transistor 10. The turns between terminals B and D compensate for the difference in voltage drop in diode 15 and transistor 10. The current in diode 18 is constant during the scan. Transistor 10 is turned off on the base during the flyback but allowed to become conductive when the collector voltage reverses during the second half of each scan.
GB4668066A 1965-10-19 1966-10-19 Transistor Television Horizontal Scan Generator. Expired GB1162520A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US49784265A 1965-10-19 1965-10-19

Publications (1)

Publication Number Publication Date
GB1162520A true GB1162520A (en) 1969-08-27

Family

ID=23978527

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4668066A Expired GB1162520A (en) 1965-10-19 1966-10-19 Transistor Television Horizontal Scan Generator.

Country Status (2)

Country Link
DE (1) DE1564510A1 (en)
GB (1) GB1162520A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3303661A1 (en) * 1983-02-03 1984-09-27 Siemens AG, 1000 Berlin und 8000 München Horizontal deflection circuit for television reproduction devices

Also Published As

Publication number Publication date
DE1564510A1 (en) 1970-06-25

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees