GB652648A - Power recovery circuit for cathode ray apparatus deflection system - Google Patents
Power recovery circuit for cathode ray apparatus deflection systemInfo
- Publication number
- GB652648A GB652648A GB5628/48A GB562848A GB652648A GB 652648 A GB652648 A GB 652648A GB 5628/48 A GB5628/48 A GB 5628/48A GB 562848 A GB562848 A GB 562848A GB 652648 A GB652648 A GB 652648A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- circuit
- voltage
- power
- capacitor
- 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
- H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
- H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor
- H03K4/28—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as a switching device
Landscapes
- Details Of Television Scanning (AREA)
Abstract
652,648. Power recovery circuits. RADIO CORPORATION OF AMERICA. Feb. 25, 1948, No. 5628. Convention date, Feb. 25, 1947. [Class 40 (vi)] In a magnetic deflection circuit for a cathoderay tube in which undesired H.F. oscillations are removed by a damping valve, a D.C. potential developed across a capacitor in series with the valve is connected effectively in series with the D.C. supply to the power output valve of the scanning circuit by connecting one plate of the capacitor to the cathode of the power valve. The Figure shows a power recovery system for the line scanning circuit of a television receiver in which the linearity of the scanning current in the deflecting coils 14 is improved by varying the impedance of the damping valve 36 in accordance with a voltage 36 in accordance with a voltage fed to its grid via the wave shaping circuit 44, 46. The D.C. potential developed across capacitor 38 is connected effectively in series with the power supply B+, B - to the power output valve 10, thus increasing the efficiency of the circuit. The D.C. voltage at lead 62 may be used for other purposes in the receiver and the E.H.T. for the final anode of the cathode-ray tube is derived via the rectifier 30 from the voltage developed across the output transformer during the fly-back period. Adjustment of potentiometer 23 enables the centering of the scanning beam to be adjusted. Specifications 613,053, 622,847, [both in Group XXXV], and 632,365, are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US652648XA | 1947-02-25 | 1947-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB652648A true GB652648A (en) | 1951-04-25 |
Family
ID=22061493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5628/48A Expired GB652648A (en) | 1947-02-25 | 1948-02-25 | Power recovery circuit for cathode ray apparatus deflection system |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB652648A (en) |
-
1948
- 1948-02-25 GB GB5628/48A patent/GB652648A/en not_active Expired
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