JPS57194676A - Control circuit for horizontal output circuit - Google Patents
Control circuit for horizontal output circuitInfo
- Publication number
- JPS57194676A JPS57194676A JP8059581A JP8059581A JPS57194676A JP S57194676 A JPS57194676 A JP S57194676A JP 8059581 A JP8059581 A JP 8059581A JP 8059581 A JP8059581 A JP 8059581A JP S57194676 A JPS57194676 A JP S57194676A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- horizontal
- transformer
- horizontal output
- voltage
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 abstract 2
- 238000009499 grossing Methods 0.000 abstract 2
- 238000004804 winding Methods 0.000 abstract 2
Classifications
-
- 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
- H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
- H04N3/223—Controlling dimensions
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Details Of Television Scanning (AREA)
Abstract
PURPOSE:To avoid the variation of the size of a horizontal screen which is caused according to the level of the beam current, by controlling the voltage which is applied to a flyback transformer of a horizontal output circuit in accordance with the level of the beam current of a TV picture tube. CONSTITUTION:A horizontal output circuit 1 is a known circuit which receives the electric power from a power supply circuit 2 via a control circuit 3 and the primary winding L2 of a flyback transformer T1 and drives a horizontal deflecting coil L1. For the circuit 3, a diode D3 and a resistance R2 are newly provided between a horizontal ripple smoothing capacitor C3 and a power supply ripple smoothing capacitor C4. The diode D3 and the resistance R2 control the voltage at a joint 4, i.e., the voltage applied to the transformer T1 in accordance with the variation of the anode current which is supplied to a picture tube via the secondary winding L3 of the transformer T1. Thus the size of a horizontal screen is kept constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8059581A JPS57194676A (en) | 1981-05-26 | 1981-05-26 | Control circuit for horizontal output circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8059581A JPS57194676A (en) | 1981-05-26 | 1981-05-26 | Control circuit for horizontal output circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57194676A true JPS57194676A (en) | 1982-11-30 |
Family
ID=13722682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8059581A Pending JPS57194676A (en) | 1981-05-26 | 1981-05-26 | Control circuit for horizontal output circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57194676A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6195164U (en) * | 1984-11-28 | 1986-06-19 | ||
| JPS61174260U (en) * | 1985-04-15 | 1986-10-30 |
-
1981
- 1981-05-26 JP JP8059581A patent/JPS57194676A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6195164U (en) * | 1984-11-28 | 1986-06-19 | ||
| JPS61174260U (en) * | 1985-04-15 | 1986-10-30 | ||
| JPH0510454Y2 (en) * | 1985-04-15 | 1993-03-15 |
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