公开(公告)号：US3643179A

公开(公告)日：1972-02-15

申请号：US3643179D

申请日：1969-07-30

Applicant: ADMIRAL CORP

Inventor： JAROSZ GEORGE J

IPC: H03B5/10 ,  H03B3/04 ,  H03C3/14

CPC classification number: H03B5/10

Abstract: A reactance oscillator having a pentode as the active oscillator element and having a triode as a variable reactance element. A number of energy storage elements are associated with the pentode oscillator in the usual manner, and one of these elements comprises the variable capacitance of the triode. Feedback from the pentode oscillator is accomplished through an integrating circuit which couples energy of the correct phase to the cathode of the triode. The pentode operates as a peak detector or a class C oscillator, conducting for less than 90* of the operating cycle. Essentially, the signal developed at the cathode of the pentode is a pulse waveform, resulting in a sawtooth waveform after being integrated. The sawtooth waveform, however, has a fundamental frequency which lags the voltage at the anode of the triode by approximately 90*. This fundamental, being coupled to the cathode of the triode, produces a current in the triode which is 180* out of phase. The result is that the current through the triode leads the voltage by approximately 90* producing the desired reactance. The magnitude of this reactance may be varied by varying the applied voltage to the control grid of the triode.

Abstract translation: 具有五极管作为有源振荡元件并具有三极管作为可变电抗元件的电抗振荡器。 许多能量存储元件以通常的方式与五极管振荡器相关联，并且这些元件中的一个包括三极管的可变电容。 来自五极管振荡器的反馈通过将正确相的能量耦合到三极管的阴极的积分电路来实现。 五极管作为峰值检测器或C类振荡器工作，运行时间小于90°。 基本上，在五极管的阴极处产生的信号是脉冲波形，在集成后产生锯齿波形。 然而，锯齿波形具有基本频率，其在三极管的阳极处的电压滞后大约90°。 耦合到三极管的阴极的这个基本原理是在三相极中产生180度异相的电流。 结果是通过三极管的电流导致电压大约90°，产生所需的电抗。 可以通过改变施加到三极管控制栅极的电压来改变该电抗的大小。

公开(公告)号：US3531682A

公开(公告)日：1970-09-29

申请号：US3531682D

申请日：1969-08-15

Applicant: ADMIRAL CORP

Inventor： JAROSZ GEORGE J

IPC: H04N9/28 ,  H01J29/50

CPC classification number: H04N9/28

公开(公告)号：US3613109A

公开(公告)日：1971-10-12

申请号：US3613109D

申请日：1969-08-15

Applicant: ADMIRAL CORP

Inventor： JAROSZ GEORGE J

IPC: H04N9/28 ,  H01J29/50

CPC classification number: H04N9/28

Abstract: A horizontal convergence circuit for a color television receiver having at least first and second coils for magnetically converging a plurality of electron beams in a cathode-ray tube. The convergence circuit has a transformer which is coupled intermediate the two coils. This convergence transformer is coupled to the flyback transformer and is energized therefrom at the horizontal deflection rate. The two convergence coils are coupled in series with the secondary of the convergence transformer and have their polarities arranged in such a way so that the transformer produces series adding voltages across the coils. The convergence transformer has a movable core which allows the transformer to be adjusted to control the spacing between vertical test lines on the screen of the cathode-ray tube. A resistor is connected in parallel with the convergence coils and a variable tap on the resistor is coupled directly to a center tap on the secondary of the convergence transformer. This arrangement provides a differential amplitude control for the parabolic current in the coils. Further parallel connected resistors provide a differential tilt control and a master tilt control for the coils. The differential tilt control regulates the proportion of sawtooth current delivered to each coil, while the master tilt control regulates the amount of sawtooth delivered to both coils simultaneously. A single diode is coupled across both the coils and restores DC to allow the center of the parabola to be fixed at a given DC reference.