-
公开(公告)号：EP0299583A1
公开(公告)日：1989-01-18
申请号：EP88201483.0
申请日：1988-07-12
摘要： In a high-frequency generator 1 having a multigrid electron tube 2, a current source circuit 10 connected to the control circuit 3 or the screen grid 4 of the electron tube 2 is arranged as an optionally adjustable current source which is also coupled to the main current path of the electron tube 2.
This defines the grid dissipation and also extends the useful life of the electron tube 2. The electron tube 2, if the current source circuit 10 is connected to the screen grid 4, is further safeguarded in a simple manner against an inadmissibly high screen grid current accompanying an occasional anode voltage drop.摘要翻译： 在具有多格子电子管2的高频发生器1中，连接到控制电路3或电子管2的屏栅4的电流源电路10被布置为可选地可调节的电流源，其也耦合到主电极 电子管2的电流路径。这定义了电网耗散并且还延长了电子管2的使用寿命。如果电流源电路10连接到屏栅4，则电子管2进一步被保护在简单的 防止伴随偶尔的阳极电压降的不允许的高屏幕电网电流。
-
公开(公告)号：EP0357121B1
公开(公告)日：1993-07-21
申请号：EP89202087.6
申请日：1989-08-15
-
公开(公告)号：EP0455296B1
公开(公告)日：1993-07-14
申请号：EP91200992.5
申请日：1991-04-25
-
4.发明授权
-
公开(公告)号：EP0299584B1
公开(公告)日：1993-12-01
申请号：EP88201484.8
申请日：1988-07-12
-
公开(公告)号：EP0299583B1
公开(公告)日：1993-12-01
申请号：EP88201483.0
申请日：1988-07-12
-
公开(公告)号：EP0357121A1
公开(公告)日：1990-03-07
申请号：EP89202087.6
申请日：1989-08-15
摘要： A high-frequency power oscillator comprises a multi-grid electron tube (5), a current source (3) and a voltage-limiting circuit (4).
The current source (3) is connected to the screen grid of an electron tube (5) arranged as a tetrode. This limits the screen grid current when the voltage on the anode of the tetrode (5) is momentary lower than the screen grid voltage.
Between the screen grid and the cathode of the tetrode a voltage-limiting circuit (4) is inserted which starts being conductive above a predetermined threshold value. This forms a limit to the screen grid voltage so that it is possible to operate the tetrode (5) in a pulsating manner. A suitable embodiment of the voltage-limiting circuit (4) comprises a triode (4). The voltage between the grid and the cathode of the triode (4) is set to a constant value by means of a voltage source (2).摘要翻译： 高频功率振荡器包括多栅极电子管（5），电流源（3）和限压电路（4）。 电流源（3）连接到布置为四极管的电子管（5）的屏栅上。 当四极（5）的阳极上的电压瞬时低于屏幕电网电压时，这会限制屏幕电流。 在屏栅和四极的阴极之间，插入限制电路（4），其开始导通超过预定阈值。 这对屏幕电网电压形成限制，使得可以以脉动的方式操作四极（5）。 限流电路（4）的合适实施例包括三极管（4）。 通过电压源（2）将三极管（4）的栅极和阴极之间的电压设定为恒定值。
-
8.发明公开High-frequency heating generator comprising a multiple-grid electron tube 失效Hochfrequenzheizgenerator具有多格电子管。
公开(公告)号：EP0238122A1
公开(公告)日：1987-09-23
申请号：EP87200336.3
申请日：1987-02-26
IPC分类号： H05B6/04
CPC分类号： H05B6/04
摘要： A high-frequency heating generator comprising an electron tube 15 for application in industrial systems in the range of several kilowatts to a number of megawatts.
To obtain an economic high-frequency generator, the electron tube 15 comprises at least two grids 152, 153: of which a first grid 153; 152 is connected to a positive feedback circuit (15ʹ) of the oscillator circuit, a setting voltage is supplied to a second grid 152, 153, and the anode 151 is connected to a non-controlled d.c. power source (13, 14).-
公开(公告)号：EP0455296A1
公开(公告)日：1991-11-06
申请号：EP91200992.5
申请日：1991-04-25
摘要： A high-frequency electron tube power oscillator comprising a multi-grid electron tube 1 of which the power delivered is adjusted by means of an adjustable impedance element 5 included in a series combination with the cathode line of the tetrode 1. In order to reduce the dissipated power in the adjustable impedance element 5, the voltage across the impedance element is connected to the screen grid of the tetrode 1 through an amplifier 6 constituted by a triode 9 and a current source 10.
摘要翻译： 一种高频电子管功率振荡器，包括一个多栅格电子管1，其输出功率借助于一个可调阻抗元件5进行调节，该可调阻抗元件5与四极管1的阴极线串联组合。为了减少 在可调阻抗元件5中耗散功率时，阻抗元件两端的电压通过由三极管9和电流源10构成的放大器6连接到四极管1的屏栅格。
-
10.发明公开Power generator for supplying a highfrequency high-voltage 失效Leistungsgenerator zum Liefern einer HF-Spannung。
公开(公告)号：EP0408135A1
公开(公告)日：1991-01-16
申请号：EP90201835.7
申请日：1990-07-09
CPC分类号： H03B5/1835 , H05B6/04 , H05H1/30
摘要： For operating high-frequency heating equipment such as, for example, plasma torches, it is deemed desirable to generate a high-frequency high voltage having a large power.
If in an oscillator circuit comprising an electron tube (1), a control circuit (7) and a frequency-determining circuit, this frequency-determining circuit is formed by a coaxial waveguide (11) which is biased in the neighbourhood of its short-circuited end, a high-frequency high voltage will be obtained at the open end.
The power supplied by the electron tube (1) is stepped up to the permissible maximum value with a given maximum supply voltage by having the electron tube (1) generate the corresponding current which is determined by the choice of the point (14) at which the coaxial waveguide (11) is biased.摘要翻译： 为了操作诸如例如等离子炬的高频加热设备，认为产生具有大功率的高频高电压是合乎需要的。 如果在包括电子管（1），控制电路（7）和频率确定电路的振荡器电路中，该频率确定电路由同轴波导（11）形成，同轴波导（11）在其短路区域 在开路端可获得高频高电压。 电子管（1）提供的功率通过使电子管（1）产生相应的电流，通过选择点（14）来确定具有给定最大电源电压的可允许最大值，其中 同轴波导（11）被偏置。
-
-
-
-
-
-
-
-
-
搜索结果
12 条记录 (耗时 0.009 秒)
