-
公开(公告)号：US4965496A
公开(公告)日：1990-10-23
申请号：US315087
申请日：1989-02-24
申请人： Peter E. Haferl
发明人： Peter E. Haferl
CPC分类号： H04N3/233 , H04N5/63 , H02M2001/0032 , Y02B70/16
摘要： A deflection switch of a horizontal deflection circuit is coupled to a retrace resonant circuit that includes a horizontal deflection winding and a first retrace capacitance. A flyback transformer primary winding is coupled to a junction terminal of the deflection switch and the resonance circuit. An East-West modulation current is generated by a bidirectional second switch having a conduction time that is phase modulated during horizontal retrace at a vertical rate in a parabolic manner. The second switch is coupled in series with the first switch during the entire trace interval. To prevent an over-current condition when the current in the second switch exceeds a predetermined first level, the second switch is turned off and interrupts the flow of current through the deflection switch. Additionally, a diode is coupled between an intermediate terminal of the transformer primary winding and a junction terminal of the deflection and the second switches for preventing an overvoltage condition from developing across the second switch.
-
公开(公告)号：US4866353A
公开(公告)日：1989-09-12
申请号：US238631
申请日：1988-08-31
申请人： Peter E. Haferl
发明人： Peter E. Haferl
IPC分类号： H04N3/18
CPC分类号： H04N3/18
摘要： A diode is coupled to a low voltage end terminal of a tertiary high voltage winding of a horizontal flyback transformer. The diode is back biased during trace and during a portion of the second half of retrace by a voltage that is coupled to the diode through a resistor from a B+ voltage source. When the diode is back biased, the resistor dampens parasitic ringing current in the tertiary winding caused by the leakage inductance of the transformer. During a portion of retrace, occuring prior to the time the diode is back biased, the diode is conductive and bypasses the resistor. This prevents the resistor from increasing the output impedance at the ultor terminal.
摘要翻译： 二极管耦合到水平回扫变压器的第三高压绕组的低压端子。 二极管在跟踪期间和在回扫的后半部分的一部分期间被电压反馈，该电压通过来自B +电压源的电阻耦合到二极管。 当二极管反向偏置时，该电阻会抑制由变压器的漏电感引起的三次绕组中的寄生振荡电流。 在回扫的一部分期间，在二极管反向偏置之前发生，二极管导通并绕过电阻器。 这样可以防止电抗器在阳极端子处增加输出阻抗。
-
公开(公告)号：US4829415A
公开(公告)日：1989-05-09
申请号：US155449
申请日：1988-02-12
申请人： Peter E. Haferl
发明人： Peter E. Haferl
IPC分类号： H02M3/337
CPC分类号： H02M3/3378
摘要： A power supply includes a source of first and second switching signals that are at opposite phases. First and second MOS power transistors have main current conducting electrodes coupled to a transformer and have gate electrodes that are respectively coupled to the first and second signals to provide push-pull operation. When a transition occurs in a first one of the MOS transistors from a conductive state to a nonconductive state, a voltage is developed at its gate electrode due to its input Miller capacitance. The gate electrode voltage is coupled to a control terminal of a controllable attenuator that attenuates the switching signal that is coupled to the gate of the other MOS transistor. This delays the initiation of the conductive state in the other MOS transistor until immediately after the first transistor becomes nonconductive, thereby avoiding simultaneous conduction in the two transistors.
-
4.发明授权Gullwing distortion corrected deflection circuitry for a square-planar picture tube 失效用于正方形显像管的垂直变形校正偏转电路
公开(公告)号：US4682085A
公开(公告)日：1987-07-21
申请号：US733661
申请日：1985-05-10
申请人： Peter E. Haferl , Hugh F. Sutherland, II , David W. Luz , James A. McDonald , George C. Waybright , Donald H. Willis
发明人： Peter E. Haferl , Hugh F. Sutherland, II , David W. Luz , James A. McDonald , George C. Waybright , Donald H. Willis
CPC分类号： H04N3/233
摘要： Line and field deflection circuits generate line and field deflection currents in respective line and field deflection windings to scan a raster on the phosphor screen of a square-planar picture tube having an aspherical faceplate. The asphericity of the faceplate subjects the scanned raster to gullwing distortion. A gullwing distortion correction circuit is responsive to signals repeating at line and field rates, respectively, for modulating the field deflection current during a line deflection period within the field deflection trace interval in a manner that corrects gullwing distortion of a corresponding raster scan line.
摘要翻译： 线偏转电路和场偏转电路在相应的线和场偏转绕组中产生线偏转电流和场偏转电流，以扫描具有非球面面板的正方形显像管的荧光屏上的光栅。 面板的非球面性使扫描光栅变为鸥翼变形。 鸥翼畸变校正电路分别响应于以线速率和场速率重复的信号，以便以校正相应的光栅扫描线的鸥翼畸变的方式在场偏转轨迹间隔期间的线偏转期间调制场偏转电流。
-
公开(公告)号：US4572993A
公开(公告)日：1986-02-25
申请号：US651316
申请日：1984-09-17
申请人： Peter E. Haferl
发明人： Peter E. Haferl
CPC分类号： H04N3/223
摘要： An energizing voltage is series coupled with a diode, an inductor, a flyback transformer primary winding and an input terminal of a deflection circuit. During trace, the diode is forward biased causing a voltage to be developed across and an input current to flow in the inductor. During retrace, opposite polarity retrace voltage commutates off the diode and decouples the input terminal from the energizing voltage at a varied instant within retrace, in accordance with the amplitude of the input current. The amplitude of the input current is related to the ultor load current. A voltage that is indicative of the input current is developed across a capacitor. A DC voltage between one plate of the capacitor and a reference conductor controls the deflection current in the deflection winding such that variations in the ultor voltage produce the same sense variations in the DC voltage that is supplied by the capacitor for maintaining a substantially constant raster width.
摘要翻译： 激励电压与二极管，电感器，回扫变压器初级绕组和偏转电路的输入端串联耦合。 在跟踪期间，二极管被正向偏置，导致跨越电压并且输入电流在电感器中流动。 在回扫期间，相反的极性回扫电压根据输入电流的幅度将二极管整流并在回扫期间在变化的瞬间将输入端与激励电压分离。 输入电流的幅度与阳极负载电流有关。 在电容器上形成表示输入电流的电压。 电容器的一个板和参考导体之间的直流电压控制偏转绕组中的偏转电流，使得阳极电压的变化产生由电容器提供的用于维持基本上恒定的光栅宽度的直流电压相同的感测变化 。
-
公开(公告)号：US4516058A
公开(公告)日：1985-05-07
申请号：US363516
申请日：1982-03-30
申请人： Peter E. Haferl
发明人： Peter E. Haferl
摘要： A linearity correction circuit for use with the horizontal deflection circuit of a television receiver comprises an inductor having two inductor portions. A capacitor, coupled to the S-shaping capacitor of the horizontal deflection circuit, is charged through one portion of the inductor during the horizontal trace interval, and discharged through another portion of the inductor during the horizontal retrace interval in order to provide linearity correction. The inductor may be tapped to allow charge/discharge current switching during the trace interval without introducing beam velocity modulation errors so that the linearity correction circuit may be efficiently combined with horizontal driver circuitry.
摘要翻译： 与电视接收机的水平偏转电路一起使用的线性校正电路包括具有两个电感器部分的电感器。 耦合到水平偏转电路的S整形电容器的电容器在水平扫描间隔期间通过电感器的一部分被充电，并且在水平回扫间隔期间通过电感器的另一部分放电，以便提供线性校正。 电感器可以被抽头以允许在跟踪间隔期间的充电/放电电流切换，而不引入光束速度调制误差，使得线性校正电路可以与水平驱动器电路有效地组合。
-
公开(公告)号：US4338549A
公开(公告)日：1982-07-06
申请号：US237848
申请日：1981-02-24
申请人： Peter E. Haferl
发明人： Peter E. Haferl
摘要： A synchronous switched vertical deflection circuit for use with a television receiver comprises first and second bidirectional switches coupled to conduct current in opposite directions. Horizontal rate energy is coupled into one end of the switches. Vertical deflection means are connected to the other end of the switches. Pulse-width modulated signals are applied to the control terminals of the switches to allow conduction of the horizontal rate energy in the vertical deflection means during selected portions of each vertical deflection interval.
摘要翻译： 用于电视接收机的同步开关垂直偏转电路包括耦合以在相反方向传导电流的第一和第二双向开关。 水平速率能量耦合到开关的一端。 垂直偏转装置连接到开关的另一端。 脉冲宽度调制信号被施加到开关的控制端子，以允许在每个垂直偏转间隔的选定部分期间在垂直偏转装置中导通水平速率能量。
-
公开(公告)号：US5266871A
公开(公告)日：1993-11-30
申请号：US843341
申请日：1992-02-28
申请人： Peter E. Haferl
发明人： Peter E. Haferl
摘要： In a television receiver, an ultor accelerating potential or high voltage for a picture tube is derived by rectifying a retrace pulse voltage developed in a high voltage winding of a flyback transformer. The retrace pulse voltage is developed by a horizontal deflection circuit output stage that is coupled to the high voltage winding via a primary winding of the flyback transformer. The horizontal deflection circuit output stage includes a horizontal deflection winding, a retrace capacitor and a trace switch. The trace switch includes a damper diode and a horizontal output transistor. An energy storage coil is coupled in parallel with a third winding of the flyback transformer during a controllable time interval beginning during the second half of horizontal trace and ending during retrace. The energy stored in the coil during the trace portion is transferred to the flyback transformer during retrace to enhance high voltage at high beam currents. The amount of energy is controlled or regulated to obtain a stabilized high voltage. The energy storage coil is parallel coupled to a retrace resonant circuit during the energy transfer interval and thus stabilizers also the horizontal retrace time which might have otherwise increased with increasing beam current.
摘要翻译： 在电视接收机中，通过对在回扫变压器的高压绕组中产生的回扫脉冲电压进行整流，导出用于显像管的超高频加速电位或高电压。 回扫脉冲电压由水平偏转电路输出级产生，其通过回扫变压器的初级绕组耦合到高压绕组。 水平偏转电路输出级包括水平偏转绕组，回扫电容器和跟踪开关。 迹线开关包括阻尼二极管和水平输出晶体管。 在回扫变压器的第三绕组的可控时间间隔期间，在水平轨迹的后半段开始并且在回扫期间结束时，储能线圈与第三绕组并联耦合。 在跟踪部分期间存储在线圈中的能量在回扫期间被传送到回扫变压器，以增强在远光束电流下的高电压。 控制或调节能量以获得稳定的高电压。 能量存储线圈在能量转移间隔期间平行耦合到回扫谐振电路，因此稳定器也可能随着束流的增加而增加。
-
公开(公告)号：US5182504A
公开(公告)日：1993-01-26
申请号：US843340
申请日：1992-02-28
申请人： Peter E. Haferl
发明人： Peter E. Haferl
摘要： Organ pipes distortions, caused by parasitic ringing in a horizontal deflection current are suppressed by forming a current pulse in a current injection arrangement. The current pulse is coupled to a junction terminal between a terminal of the horizontal deflection winding where a high retrace pulse voltage is developed and a low voltage terminal of a linearity correction inductance. A high voltage terminal of the linearity correction inductance is coupled to a horizontal output transistor. The current pulse begins prior to the end of retrace and ends during the trace interval.
-
公开(公告)号：US4907116A
公开(公告)日：1990-03-06
申请号：US204474
申请日：1988-06-09
CPC分类号： H02H7/122 , H02H7/1213
摘要： A MOSFET power switching transistor in a DC-to-DC converter of a television apparatus has a drain electrode that is coupled via a primary winding of a chopper transformer to an input supply voltage. A first signal at a given frequency causes, during normal operation, alternate conduction and nonconduction in the transistor. A second signal is generated that is proportional to the voltage developed across the internal "on" resistance of the transistor when the transistor is conductive. The second signal is clamped when the MOSFET transistor is nonconductive. The second signal is coupled via a current sensing arrangement to the transistor gate. The second signal prevents the transistor from further conducting when the amplitude of the second signal exceeds a predetermined value that corresponds with a predetermined limiting threshold level of current in the transistor.
-
-
-
-
-
-
-
-
-
搜索结果
44 条记录 (耗时 0.029 秒)
