Circuit for improving traveling wave tube amplifier filament service life
A traveling wave tube amplifier and filament voltage technology, which is applied in the direction of circuits, discharge tubes, electrical components, etc., can solve the problems of traveling wave tube reliability, short slow start time, filament current impact, etc., to achieve strong product consistency, The circuit is simple and the effect of reducing the current impact
Active Publication Date: 2013-05-08
XIAN INSTITUE OF SPACE RADIO TECH
View PDF2 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, due to the short start-up time of the traveling wave tube power supply (mostly about 10mS), and the voltage overshoot, the heater is in a cold state at the moment when the filament is powered on, the impedance is small, and the current impact is large, which affects the traveling wave tube. The filament causes a current shock, which affects the reliability of the traveling wave tube
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0017] The schematic diagram of the circuit to improve the filament life of the traveling wave tube amplifier is as follows: figure 2 shown. The circuit includes: a filament isolation transformer T1, and a filament voltage regulation circuit (including a triode Q1, an operational amplifier N1, resistors R1, R2, R3, and a current limiting resistor R4). The filament isolation transformer T1 is composed of a primary winding and a secondary winding, the primary winding is composed of two windings, connected to the internal DC / AC circuit of the traveling wave tube power supply; the center tap is connected to the collector of the triode Q1, and the filament isolation transformer T1 The negative side winding of the TWT is connected to the filament load R5 of the traveling wave tube; the emitter of the triode Q1 is connected to the ground after the resistor R4 is connected in series; the reference voltage is connected to the same input terminal of the operational amplifier N1; one en...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more PUM
Login to view more Abstract
A circuit for improving traveling wave tube amplifier filament service life comprises a filament isolation transformer T1 and a filament voltage regulation circuit. The filament voltage regulation circuit comprises an audion Q1, an operational amplifier N1, a resistor R1, a resistor R2, a resistor R3 and a current-limiting resistor R4. The filament isolation transformer T1 is formed by a primary side winding and a vice side winding, and the primary side winding is composed of two windings and connected with a traveling wave tube power supply interior direct current (DC) / alternating current (AC) circuit. A centre tap is switched in a collector of the audion Q1, and the vice side winding of the filament isolation transformer T1is connected with a traveling wave tube filament load R5. An emitting electrode of the audion Q1 is in series connection with the current-limiting resistor R4 and then connected to the ground. Reference voltage is switched in a homodromous input end of the operational amplifier N1. One end of the resistor R2 is switched in a reverse input end of the operational amplifier N1, and the other end of the resistor R2 is connected to the ground. An output end of the operational amplifier N1 is in series connection with the resistor R1 and then is switched in a base electrode of the audion Q1. One end of the resistor R3 is switched in the base electrode of the audion Q1, and the other end of the resistor R3 is connected to the ground. The reverse input end of the operational amplifier N1 is connected with the emitting electrode of the audion Q1.
Description
technical field [0001] The invention belongs to the technical field of microwave communication, and relates to a circuit for improving the filament life of a traveling wave tube amplifier. Background technique [0002] Traveling wave tube amplifier (TWTA) consists of two parts: traveling wave tube (TWT) and traveling wave tube power supply (EPC), such as figure 1 shown. Among them, the function of the traveling wave tube is to use its unique slow wave structure to amplify the power of the input microwave signal; the function of the traveling wave tube power supply is to receive the remote control command signal and convert the primary power provided by the satellite into the various levels required by the traveling wave tube. High voltage, at the same time, provide telemetry data of the working status of the traveling wave tube amplifier, and ensure that the traveling wave tube amplifier is powered off in time when abnormal conditions occur, so as to protect the traveling w...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more Application Information
Patent Timeline
Login to view more IPC IPC(8): H01J23/34
Inventor 梁英冯西贤冯昱嘉刘钊李亭
Owner XIAN INSTITUE OF SPACE RADIO TECH
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap