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公开(公告)号：US08027140B2
公开(公告)日：2011-09-27
申请号：US11722046
申请日：2005-12-16
IPC分类号： H01H1/66
CPC分类号： H01H67/24 , H01H51/28 , H01H67/30 , H05K1/18 , Y10T29/49105
摘要： An array of reed switches (13) is assembled on a circuit board (11) having a plurality of through-apertures (12) with one reed switch (13) disposed in each aperture with the axis of the switch envelope (14) extending perpendicularly to the plane of the board. A plurality of coils (16) is provided on the board so that each switch (13) is surrounded by a respective coil, the coils being connected to conductors on the board for operation of the switches. Also disposed is a control circuit wherein the reed switch drive coils (26) are connected in series across a constant-current voltage source and a respective solid-state switch TR1, TR2 . . . connected across each coil, with divers for each solid-state switch to permit operation of a selected reed switch.
摘要翻译： 一组簧片开关（13）组装在具有多个通孔（12）的电路板（11）上，其中一个舌簧开关（13）设置在每个孔中，开关外壳（14）的轴线垂直延伸 到董事会的飞机。 多个线圈（16）设置在板上，使得每个开关（13）被相应的线圈包围，线圈连接到板上的导线以用于开关的操作。 还设置有控制电路，其中簧片开关驱动线圈（26）串联连接在恒流电压源和相应的固态开关TR1，TR2上。 。 。 连接在每个线圈上，每个固态开关具有潜水员，以允许选择的簧片开关的操作。
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公开(公告)号：US20090231774A1
公开(公告)日：2009-09-17
申请号：US11722046
申请日：2005-12-16
CPC分类号： H01H67/24 , H01H51/28 , H01H67/30 , H05K1/18 , Y10T29/49105
摘要： An array of reed switches (13) is assembled on a circuit board (11) having a plurality of through-apertures (12) with one reed switch (13) disposed in each aperture with the axis of the switch envelope (14) extending perpendicularly to the plane of the board. A plurality of coils (16) is provided on the board so that each switch (13) is surrounded by a respective coil, the coils being connected to conductors on the board for operation of the switches. Also disposed is a control circuit wherein the reed switch drive coils (26) are connected in series across a constant-current voltage source and a respective solid-state switch TR1, TR2 . . . connected across each coil, with divers for each solid-state switch to permit operation of a selected reed switch.
摘要翻译： 一组簧片开关（13）组装在具有多个通孔（12）的电路板（11）上，其中一个舌簧开关（13）设置在每个孔中，开关外壳（14）的轴线垂直延伸 到董事会的飞机。 多个线圈（16）设置在板上，使得每个开关（13）被相应的线圈包围，线圈连接到板上的导线以用于开关的操作。 还设置有控制电路，其中簧片开关驱动线圈（26）串联连接在恒流电压源和相应的固态开关TR1，TR2上。 。 。 连接在每个线圈上，每个固态开关具有潜水员，以允许选择的簧片开关的操作。
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公开(公告)号：US07889048B2
公开(公告)日：2011-02-15
申请号：US12052926
申请日：2008-03-21
IPC分类号： H01C10/30
CPC分类号： G06F17/5036 , F02D41/222 , F02D2041/1437
摘要： A variable resistor network has a coarse resistance network and a fine resistance network connected in series with the coarse network. The coarse resistance network comprises a chain of series-connected resistors any one or more of which may be switched out of the series by individual parallel-connected relays. The fine network comprises a shunt resistor together with a fixed resistor and a series-connected adjustable resistor together connected in parallel with the shunt resistor. A control circuit is arranged to control the relays for the switching of the resistors of the coarse network and also to control adjustment of the adjustable resistor. A chosen resistance value can be set by appropriate switching of the coarse network and adjustment of the adjustable resistor.
摘要翻译： 可变电阻网络具有与粗网络串联的粗电阻网络和精细电阻网络。 粗电阻网络包括一系列串联电阻器，其中的一个或多个可以通过单独的并联继电器从串联中切换出来。 精细网络包括一个分流电阻器和固定电阻器以及串联连接的可调电阻器，它们与分流电阻器并联连接。 控制电路被布置成控制用于切换粗网络的电阻器的继电器，并且还用于控制可调电阻器的调节。 可以通过适当切换粗网络和调整可调电阻来设置所选电阻值。
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公开(公告)号：US20080231412A1
公开(公告)日：2008-09-25
申请号：US12052926
申请日：2008-03-21
IPC分类号： H01C10/30
CPC分类号： G06F17/5036 , F02D41/222 , F02D2041/1437
摘要： A variable resistor network has a coarse resistance network and a fine resistance network connected in series with the coarse network. The coarse resistance network comprises a chain of series-connected resistors any one or more of which may be switched out of the series by individual parallel-connected relays. The fine network comprises a shunt resistor together with a fixed resistor and a series-connected adjustable resistor together connected in parallel with the shunt resistor. A control circuit is arranged to control the relays for the switching of the resistors of the coarse network and also to control adjustment of the adjustable resistor. A chosen resistance value can be set by appropriate switching of the coarse network and adjustment of the adjustable resistor.
摘要翻译： 可变电阻网络具有与粗网络串联的粗电阻网络和精细电阻网络。 粗电阻网络包括一系列串联电阻器，其中的一个或多个可以通过单独的并联继电器从串联中切换出来。 精细网络包括一个分流电阻器和固定电阻器以及串联连接的可调电阻器，它们与分流电阻器并联连接。 控制电路被布置成控制用于切换粗网络的电阻器的继电器，并且还用于控制可调电阻器的调节。 可以通过适当切换粗网络和调整可调电阻来设置所选电阻值。
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5.发明授权Low noise synthesizer and method employing first tunable source and first and second reference sources 失效低噪声合成器和采用第一可调谐源和第一和第二参考源的方法公开(公告)号：US07005925B2
公开(公告)日：2006-02-28
申请号：US10498151
申请日：2002-12-13
申请人： David Paul Owen , Adrian Mark Jones
发明人： David Paul Owen , Adrian Mark Jones
IPC分类号： H03L7/00
CPC分类号： H03C3/095 , H03C3/0925 , H03C3/0933 , H03C3/0941 , H03L7/23
摘要： A low noise sinusoidal signal at a desired output frequency is synchronised using a first variable frequency oscillator (1) and providing a feedback control loop around the first oscillator (1) to generate a feedback control signal in successive frequ comparison steps using second and third frequency reference signals (44, 42). Each of the second and third frequency reference signals are derived from a first frequency reference signal, the second frequency reference signal (44) being compared with the output frequency of the first oscillator (1) to generate a frequency difference signal (43), and said frequency difference signal ( being compared in frequency with the third frequency reference signal (42) to generate said feedback control signal for the first oscillator (1), the frequency of the third frequency reference signal (42) being equal to the difference of the frequency of the se frequency reference signal (44) and the desired output frequency. The second and third frequency reference signals (44, 42) are generated by respective second and third frequency reference sources, the second frequency reference source comprising a second variable frequency oscillator (38) the frequency of which is maintained in a limited range around its optimum natural frequency to give optimum performance in producing a low noise output from the first oscillator (1).
摘要翻译： 使用第一可变频率振荡器（1）使期望输出频率的低噪声正弦信号同步，并且在第一振荡器（1）周围提供反馈控制环路，以在使用第二和第三频率的连续频率比较步骤中产生反馈控制信号 参考信号（44,42）。 第二频率参考信号和第三频率参考信号中的每一个从第一频率参考信号导出，将第二频率参考信号（44）与第一振荡器（1）的输出频率进行比较以产生频率差信号（43），以及 所述频率差信号（频率与第三频率参考信号（42）进行比较）以产生用于第一振荡器（1）的反馈控制信号，第三频率参考信号（42）的频率等于 频率参考信号（44）的频率和期望的输出频率，第二和第三频率参考信号（44,42）由相应的第二和第三频率参考源产生，第二频率参考源包括第二可变频率振荡器 （38），其频率保持在围绕其最佳固有频率的有限范围内，以获得最佳性能 在产生来自第一振荡器（1）的低噪声输出。
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