公开(公告)号：EP0155743A3

公开(公告)日：1987-11-19

申请号：EP85200415

申请日：1985-03-19

Applicant: N.V. Philips' Gloeilampenfabrieken

Inventor： Lill, Graham David

IPC: H03L03/00 ,  H03B05/12

CPC classification number: H03L3/00 ,  H03B11/10 ,  H03B2200/0066 ,  H03B2200/0094

Abstract: The invention relates to an electric oscillator comprising a resonant circuit. After switching on such oscillators it takes a minimum time to build up an oscillatory working amplitude. To reduce the oscillation build-up time of the oscillator it comprises a current supply source, control elements and switching means for changing the operating mode of the oscillator from a standby mode to an oscillatory mode vice versa. During standby mode a charging current is supplied via the coil of the resonant circuit so that while switching on into the oscillatory mode the charging current is interrupted, and the control elements immediately can have the disposal over an oscillatory amplitude to work with.

公开(公告)号：WO1997026705A1

公开(公告)日：1997-07-24

申请号：PCT/GB1997000099

申请日：1997-01-13

Applicant: CENTRAL RESEARCH LABORATORIES LIMITED ,  GREEN, Ian, MacDonald

Inventor： CENTRAL RESEARCH LABORATORIES LIMITED

IPC: H03B05/12

CPC classification number: H05B41/2821 ,  H05B41/3927

Abstract: An oscillator, capable of delivering power from a d.c. power supply to a load at frequencies above 100 kHz comprises a pair of field effect transistors (16, 17) operating in anti phase in a resonant circuit and a voltage limiter (35) which in operation introduces a phase shift to the resonant circuit and returns energy to the power supply. The voltage limiter preferably comprises a diode clipper which is inductively coupled to the resonant circuit. A pulse time modulation drive system for an electrodeless backlight comprises such an oscillator together with control means for starting and stopping the oscillator according to a pulse time modulation scheme.

Abstract translation: 振荡器，能够从直流输出功率。 对频率高于100kHz的负载的电源包括在谐振电路中以反相工作的一对场效应晶体管（16,17）和在限制器（35）中工作的电压限制器（35），其在谐振电路中引入相移并返回 能源供电。 电压限制器优选地包括电感耦合到谐振电路的二极管限幅器。 用于无电极背光的脉冲时间调制驱动系统包括这样的振荡器以及用于根据脉冲时间调制方案启动和停止振荡器的控制装置。

公开(公告)号：WO1996033552A1

公开(公告)日：1996-10-24

申请号：PCT/SE1996000385

申请日：1996-03-26

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ)

Inventor： TELEFONAKTIEBOLAGET LM ERICSSON (publ) ,  HAARTSEN, Jacobus

IPC: H03B05/12

CPC classification number: H03B5/1231 ,  H03B5/1212 ,  H03B5/1221 ,  H03B2200/0086 ,  H03B2200/0098

Abstract: An apparatus and method are provided for increasing the Q-value of an oscillator so that a net gain in the stability of the oscillators is obtained. In the apparatus and method, a plurality of units, which each include a passive frequency-selective circuit and an active amplifier, are cascaded and the required isolation between the passive frequency-selective circuits is maintained by the active amplifier acting as a buffer. As a result, interaction and loading is prevented between the passive frequency-selective circuits so that the net gain in the stability of the oscillator is achieved because the Q-value of the oscillator is increased.

Abstract translation: 提供了一种用于增加振荡器的Q值的装置和方法，以便获得振荡器的稳定性的净增益。 在该装置和方法中，分别包括无源频率选择电路和有源放大器的多个单元被级联，并且被动频率选择电路之间所需的隔离由作为缓冲器的有源放大器保持。 结果，在无源频率选择电路之间防止了相互作用和负载，使得由于振荡器的Q值增加而实现振荡器稳定性的净增益。

公开(公告)号：EP0125586A3

公开(公告)日：1987-08-05

申请号：EP84105078

申请日：1984-05-05

Applicant: Deutsche Thomson-Brandt GmbH

Inventor： Maier, Gerhard ,  Kirschner, Erich

IPC: H03B05/12

CPC classification number: H03B5/1231 ,  H03B5/1203 ,  H03B5/1243 ,  H03B2200/0008 ,  H03B2200/004 ,  H03B2200/0042 ,  H03B2200/0048 ,  H03B2200/0056 ,  H03B2201/0208 ,  H03B2201/03

公开(公告)号：EP0110595A3

公开(公告)日：1986-10-15

申请号：EP83306805

申请日：1983-11-08

Applicant: HAZELTINE CORPORATION

Inventor： Muth, Robert N.

IPC: H03B05/12 ,  H03B05/02

CPC classification number: H03B5/1231 ,  H03B5/1203 ,  H03B5/1243 ,  H03B2200/004 ,  H03B2201/0208

Abstract: An oscillator (20) having sufficient accuracy and precision for use in aircraft microwave-landing systems is constructed without the use of an external inductor. A resonant tank circuit comprising both capacitance and inductance is attained by the use of inductance found internally in the base-emitter (28, 30) junction of a transistor suitably biased for operation at the frequencies of a microwave landing system. A transistor having greater-than-unity gain in the oscillation-frequency range is selected for which the angle of the reflection coefficient (S 11 ) is positive in theoscillation-frequency range.

公开(公告)号：EP0207650A3

公开(公告)日：1988-08-03

申请号：EP86304343

申请日：1986-06-06

Applicant: Vari-L Company, Inc.

Inventor： Kiser, Joseph H.

IPC: H03B05/12

CPC classification number: H03B5/1231 ,  H03B5/1203 ,  H03B5/1243 ,  H03B2200/0006 ,  H03B2200/0008 ,  H03B2200/004 ,  H03B2200/0088 ,  H03B2200/009 ,  H03B2200/0092 ,  H03B2201/0208

Abstract: An oscillator has a resonant tank circuit inclusive of an inductor (L1), a capacitor (C1), a capacitor (C3) and a capacitor (C4) connected in series with one another. A signal amplifier (A) is connected in a feedback loop which includes capacitor (C3). An additional impedance (C5) is connected between the feedback output (E) of the amplifier and the feedback signal dividing capacitors (C3) and (C4). This additional impedance (C5) improves tuning range, tuning linearity, phase noise performance, and provides a very flat power output at ultra high frequencies.

公开(公告)号：EP0163803A3

公开(公告)日：1987-12-09

申请号：EP85100250

申请日：1985-01-12

Applicant: Jores, Heinrich

Inventor： Jores, Heinrich

IPC: H03B05/12

CPC classification number: H03B5/1206 ,  H03B5/1296

Abstract: Zur Kosteneinsparung und zur Reduzierung der vielen bisher bei der Erzeugung von ungedämpften elektrischen Schwingungen je nach Verwendungszweck eingesetzten Sinusoszillatorarten kann der hier beschriebene neue Os zillator, der sich durch seinen einfachen schaltungstechnischen Aufbau, durch seine guten Schwing- und Abgleicheigenschaften und durch sein stabiles Schwingverhalten gegenüber den be kannten Oszillatoren auszeichnet, mit Erfolg eingesetzt werden.
Durch eine geringe Abwandlung dieser Schaltung (An schluß 5 des Mitkopplungswiderstandes R
M direkt auf Null potential und kapazitive Signaleinkopplung auf den nicht invertierenden Operationsverstärkereingang E) kann dieser Oszillator in einen selektiven Verstärker umfunktioniert werden.

Abstract translation: 为了节省成本并减少用于各种应用的大量正弦波振荡器，用于产生无阻抗的电振荡，可以成功地使用这里描述的新型振荡器（见基本图，版本1和2）。 这与其已知的振荡器相比，其简单的电路结构，良好的振荡和调谐特性以及稳定的振荡特性来区分开来。 通过对该电路的轻微修改（正反馈电阻器RM的直接到零电位的连接S和信号到非反相运算放大器输入E的电容性输入耦合），该振荡器可以被转换为用作选择放大器 。

公开(公告)号：EP0132749A3

公开(公告)日：1986-10-22

申请号：EP84108364

申请日：1984-07-16

Applicant: Siemens Aktiengesellschaft

Inventor： Thanhäuser, Erhard, Dipl.-Ing.

IPC: H03B05/12 ,  H03C03/14

CPC classification number: H03C3/145 ,  H03B5/1209 ,  H03B5/1231 ,  H03B5/1256 ,  H03B2200/0034 ,  H03B2200/0092 ,  H03B2201/0208 ,  H03C3/08 ,  H03C2200/0008

Abstract: Signalverarbeitende Phasenregelschaltungen zur Erze ugung von Tragersignalen verwenden als spannungsges teuerte Oszillatoren in der Regel solche mit einer Kapazitäts diode. Im Frequenzbereich von einigen hundert KHz bis zu einigen MHz ergeben sich bei Verwendung von Kapazitäts dioden auch mit sogenannten hyperabruptem PN-Übergang keine ausreichend linearen Nachsteuerkennlinien. Erfin dungsgemäß wird deshalb ein Oszillator vorgeschlagen, dessen spannungsgesteuerte Reaktanz eine Stromspiegels chaltung enthält. Derartige Oszillatoren können obere dort mit Vorteil verwendet werden, wo bei Frequenzen im genann ten Frequenzbereich eine besonders lineare Nachsteuerkenn linie gefordert wird.

公开(公告)号：EP0030997A3

公开(公告)日：1984-03-21

申请号：EP80104786

申请日：1980-08-13

Applicant: Rockwell International Corporation

Inventor： McKee Donald Eugene

IPC: G01D05/243 ,  H03B05/12

CPC classification number: G01D5/243

Abstract: A position sensing element forms a reactance (inductive or capacitive) in the L/C tuning circuit of an oscillator. The reactance varies as a function of the position of the sensing element relative to a predetermined object. This causes the resonant frequency of the oscillator to vary as a function of the position of the sensing element. The output of the oscillator is squared to provide a square wave signal, the frequency of which is direct function of the position of the sensing element relative to the predetermined object.

公开(公告)号：WO1997026704A1

公开(公告)日：1997-07-24

申请号：PCT/CA1997000023

申请日：1997-01-15

Applicant: OMEGA DIGITAL DATA INC. ,  COVELEY, Michael

Inventor： OMEGA DIGITAL DATA INC.

IPC: H03B05/12

CPC classification number: H03C3/0958 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1243 ,  H04B1/44

Abstract: A switchable voltage-controlled oscillator (14) includes at least one signal input node receiving reference and modulation signal inputs and a signal output node. Resonant circuitry (52, 54) establishing the operating frequency range of the voltage-controlled oscillator is coupled to the at least one signal input node. An amplifier (50) has an input coupled to the resonant circuitry and an output coupled to the signal output node. A feedback path (17) extends from the output of the amplifier to the resonant circuitry. The resonant circuitry is switchable to introduce at least one reactive circuit element thereto to alter the operating frequency range of the voltage-controlled oscillator.

Abstract translation: 可切换压控振荡器（14）包括至少一个接收参考和调制信号输入的信号输入节点和信号输出节点。 建立压控振荡器的工作频率范围的谐振电路（52,54）耦合到至少一个信号输入节点。 放大器（50）具有耦合到谐振电路的输入和耦合到信号输出节点的输出。 反馈路径（17）从放大器的输出延伸到谐振电路。 谐振电路可切换以将至少一个无功电路元件引入其中以改变压控振荡器的工作频率范围。