JPS5556774A - Pickup tube cathode blanking boosting device for television camera - Google Patents
Pickup tube cathode blanking boosting device for television cameraInfo
- Publication number
- JPS5556774A JPS5556774A JP12996778A JP12996778A JPS5556774A JP S5556774 A JPS5556774 A JP S5556774A JP 12996778 A JP12996778 A JP 12996778A JP 12996778 A JP12996778 A JP 12996778A JP S5556774 A JPS5556774 A JP S5556774A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- conduct
- pickup tube
- blanking pulse
- television camera
- 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
Landscapes
- Details Of Television Scanning (AREA)
Abstract
PURPOSE: To obtain the desired cathode blanking pulse voltage through a simple circuit and without using any exclusive high voltage power source, the boosting pulse transformer and others.
CONSTITUTION: Transistor Tr4 and 1st Tr11 of 1st-step booster circuit 10 do not conduct during the sweep period, and 2nd Tr17 and Tr34 of booster circuit step 30 conduct. And the potential of output terminal 37, i.e., the potential of the cathode of the pickup tube features the earth potntial, thus ensuring the effective scanning by the electron beam. In this instant, capacitors 14 and 36 are charged up to VCC. With supply of the blanking pulse to input terminal 3, Tr14 and Tr11 conduct with Tr17 and Tr34 turned non-conductive. At this moment, the voltage obtained by clamping the blanking pulse voltage over the charging voltage of capacitor 14 is generated at junction 15, and the voltage obtained by clamping the clamped voltage over the charging voltage of capacitor 34 is generated at junction 35 respectively. This voltage is then delivered to terminal 37 via resistance 33.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12996778A JPS5556774A (en) | 1978-10-24 | 1978-10-24 | Pickup tube cathode blanking boosting device for television camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12996778A JPS5556774A (en) | 1978-10-24 | 1978-10-24 | Pickup tube cathode blanking boosting device for television camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5556774A true JPS5556774A (en) | 1980-04-25 |
Family
ID=15022851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12996778A Pending JPS5556774A (en) | 1978-10-24 | 1978-10-24 | Pickup tube cathode blanking boosting device for television camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5556774A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180090199A (en) | 2017-02-02 | 2018-08-10 | 우시오덴키 가부시키가이샤 | Exposure device |
-
1978
- 1978-10-24 JP JP12996778A patent/JPS5556774A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20180090199A (en) | 2017-02-02 | 2018-08-10 | 우시오덴키 가부시키가이샤 | Exposure device |
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