JPS56116252A - Traveling-wave tube protecting circuit - Google Patents
Traveling-wave tube protecting circuitInfo
- Publication number
- JPS56116252A JPS56116252A JP1873880A JP1873880A JPS56116252A JP S56116252 A JPS56116252 A JP S56116252A JP 1873880 A JP1873880 A JP 1873880A JP 1873880 A JP1873880 A JP 1873880A JP S56116252 A JPS56116252 A JP S56116252A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- shutdown
- helix
- drops
- instantaneous
- 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.)
- Granted
Links
Landscapes
- Microwave Amplifiers (AREA)
- Microwave Tubes (AREA)
Abstract
PURPOSE: To prevent the flowing of an excessive helix current by adding a delay circuit to delay the application of a helix current after the recovery of an instantaneous shutdown in order to stop the application of a helix current due to the recovery of the instantaneous shutdown until an anode voltage discharges compltely after an occurence of the instantaneous shutdown.
CONSTITUTION: The output of IC1 drops to the ground voltage and an electic charge accumulated in a capacitor C1 discharges instantaneously when a source voltage drops beyond a given value. Accordingly, the output of IC2 drops to the ground voltage and a transistor TR1 is shutdown to shutdown a helix voltage. The input voltage of IC2 increases depending on a time constant which is a product of a resistance R3 and capacity C1 when the source voltage is recovered. Thus the transistor TR1 becomes conductive when an anode voltage discharge completely, and a helix voltage is applied.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1873880A JPS56116252A (en) | 1980-02-18 | 1980-02-18 | Traveling-wave tube protecting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1873880A JPS56116252A (en) | 1980-02-18 | 1980-02-18 | Traveling-wave tube protecting circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56116252A true JPS56116252A (en) | 1981-09-11 |
JPS6259855B2 JPS6259855B2 (en) | 1987-12-14 |
Family
ID=11980002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1873880A Granted JPS56116252A (en) | 1980-02-18 | 1980-02-18 | Traveling-wave tube protecting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56116252A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010128551A (en) * | 2008-11-25 | 2010-06-10 | Nec Microwave Inc | Current measuring circuit |
-
1980
- 1980-02-18 JP JP1873880A patent/JPS56116252A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010128551A (en) * | 2008-11-25 | 2010-06-10 | Nec Microwave Inc | Current measuring circuit |
US8981799B2 (en) | 2008-11-25 | 2015-03-17 | Netcomsec Co.Ltd | Current measuring circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS6259855B2 (en) | 1987-12-14 |
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