GB999978A - Improved circuit arrangements relating to sawtooth current generators - Google Patents
Improved circuit arrangements relating to sawtooth current generatorsInfo
- Publication number
- GB999978A GB999978A GB1322462A GB1322462A GB999978A GB 999978 A GB999978 A GB 999978A GB 1322462 A GB1322462 A GB 1322462A GB 1322462 A GB1322462 A GB 1322462A GB 999978 A GB999978 A GB 999978A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transformer
- battery
- supply
- conductive
- march
- 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
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
- H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
- H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
- H04N3/18—Generation of supply voltages, in combination with electron beam deflecting
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Dc-Dc Converters (AREA)
- Details Of Television Scanning (AREA)
Abstract
999,978. Converting. TELEFUNKEN PATENTVERWALTUNGS G.m.b.H. March 30, 1962 [March 30, 1961], No. 12224/62. Heading H2F. [Also in Division H3] In a sawtooth current generator intended for use on two alternative supplies of different voltage, the supply boosting circuit is arranged to be disconnected when operating on the higher voltage supply. In Fig. 2, switch 1 is set to the lower position when operating from a 6 v. battery 2. Transistor 6 is periodically made conductive so as to generate a linearly changing current in transformer 15. Capacitor 7 provides a resonant return each time transistor 6 is made non-conductive, diodes 8, 9 becoming conductive so as to charge the supply boosting capacitor 10. When a 12 v. battery is used at 2, switch 1 is set to its upper position, energy during the flyback being returned to the battery 2. Deflection coils 5 may be capacitively or inductively coupled to transformer 15. Alternatively the transformer 15 may be eliminated. In Fig. 4, other stages 11 of a television receiver are supplied with 12 v. and further states 12 with 6 v. irrespective of whether a 6 or 12 v. battery is used at 2. The output from an auxiliary winding 17 is rectified at 18 and used to charge an auxiliary accumulator 16. The E.H.T. supply for a cathode-ray tube may also be derived from transformer 15. Fig. 5 (not shown) relates to another arrangement using a double-wound transformer.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET19896A DE1151547B (en) | 1961-03-30 | 1961-03-30 | Transistor television set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB999978A true GB999978A (en) | 1965-07-28 |
Family
ID=7549487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1322462A Expired GB999978A (en) | 1961-03-30 | 1962-03-30 | Improved circuit arrangements relating to sawtooth current generators |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1151547B (en) |
| GB (1) | GB999978A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1285523B (en) * | 1966-07-26 | 1968-12-19 | Siemens Ag | Device for generating a rectangular horizontal deflection voltage |
| DE2340286C2 (en) * | 1973-08-09 | 1975-05-22 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Circuit for the operating voltage supply of the line output stage in a television receiver |
| DE3037918C3 (en) * | 1980-10-08 | 1994-07-28 | Schroff Gmbh | Housings for electrical and electronic devices |
| DE3303661A1 (en) * | 1983-02-03 | 1984-09-27 | Siemens AG, 1000 Berlin und 8000 München | Horizontal deflection circuit for television reproduction devices |
-
1961
- 1961-03-30 DE DET19896A patent/DE1151547B/en active Pending
-
1962
- 1962-03-30 GB GB1322462A patent/GB999978A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1151547B (en) | 1963-07-18 |
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