专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4797626A Offset voltage correction circuit for gridded power tubes 失效
标题翻译：网格功率管偏移电压校正电路
公开(公告)号：US4797626A
公开(公告)日：1989-01-10
申请号：US902270
申请日：1986-08-29
申请人： Hiroshi Honda , Eduardo D. Szyszlican
发明人： Hiroshi Honda , Eduardo D. Szyszlican
IPC分类号： H03K5/003 , H03K3/02 , H01J19/82
CPC分类号： H03K5/003
摘要： An offset voltage correction circuit for a gridded power tube, such as a gridded traveling wave tube (GTWT), provides from a pulsed, floating, negatively offset voltage signal representing the pulsed current output of the tube, a corrected pulsed, zero voltage offset signal. Such corrected signal is used in a feedback loop to control the voltage signal provided to the tube grid in a manner causing the pulsed output current of the tube to have a preestablished amplitude. The signal correcting circuit includes a .pi.-shaped network formed of a capacitor and first and second transistors. The two transistors are connected in electrical parallel so that between pulses of the offset voltage signal the first one of the transistors is held off and keeps the second transistor turned on so that the capacitor charges to the negative offset voltage of the offset voltage signal. During the pulses of the offset voltage signal, the first transistor is turned on and thereby turns the second transistor off, causing the capacitor output side to provide a zero offset voltage pulse having an amplitude equal to the sum of the negative offset and positive voltages (the total peak-to-peak voltage) of the voltage offset signal. The zero offset signal is used by a control loop circuit and a grid pulse modulator to provide a control voltage signal to the grid of the tube which maintains the pulsed output current of the tube at a preselected level in spite of tube aging and thermal effects which tend to cause the output current to change.
摘要翻译：用于诸如网格行波管（GTWT）的网格功率管的偏移电压校正电路从表示管的脉冲电流输出的脉冲，浮置，负偏移电压信号提供校正的脉冲零电压偏移信号。这种校正信号用于反馈回路中，以使得管的脉冲输出电流具有预先建立的振幅的方式来控制提供给管网的电压信号。信号校正电路包括由电容器和第一和第二晶体管形成的π形网络。两个晶体管并联连接，使得在偏移电压信号的脉冲之间，晶体管中的第一个被保持关闭，并且保持第二晶体管导通，使得电容器充电到偏移电压信号的负偏移电压。在偏移电压信号的脉冲期间，第一晶体管导通，从而使第二晶体管截止，使得电容器输出侧提供具有等于负偏移和正电压之和的振幅的零偏移电压脉冲（电压偏移信号的总峰 - 峰电压）。零偏移信号由控制回路电路和电网脉冲调制器用于向管的栅格提供控制电压信号，其将管的脉冲输出电流保持在预选的水平，尽管管老化和热效应，倾向于导致输出电流发生变化。

IPRDB

热门服务

关于我们

友情链接

联系方式