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    • 1. 发明公开
    • A feedback arrangement in a deflection circuit
    • 偏转电路中的反馈装置
    • EP0504687A3
    • 1994-02-16
    • EP92103925.1
    • 1992-03-07
    • THOMSON CONSUMER ELECTRONICS, INC.
    • Nero, Leroy William
    • H03K4/62H04N3/18
    • H03K4/085H03K4/62
    • A driver stage of a horizontal deflection output transistor (Q2) includes a transformer (T1) having a first winding (W1) coupled to a collector of a second, driver transistor (Q1) responsive to an input signal (V OSC ) at a horizontal deflection frequency. A second winding (W2) of the transformer is coupled across a base-emitter junction of the output transistor and a third winding (W3) is coupled to the emitter of and in series with the output transistor. The third winding couples the emitter current to the base of the output transistor for supplying a substantial portion of the base current during the second half of trace. A feedback network (201, 202) is coupled between a trace capacitor (C S ) coupled to a horizontal deflection winding (L H ) and the collector of the driver transistor for preventing abnormal steady state operation in the output transistor.
    • 水平偏转输出晶体管(Q2)的驱动级包括变压器(T1),该变压器具有耦合到第二驱动晶体管(Q1)的集电极的第一绕组(W1),该第二驱动晶体管(Q1)响应于水平偏转的输入信号(VOSC) 频率。 变压器的第二绕组(W2)耦合在输出晶体管的基极 - 发射极结两端,第三绕组(W3)耦合到输出晶体管的发射极并与之串联。 第三绕组将发射极电流耦合到输出晶体管的基极,用于在跟踪的第二半期间提供基本部分的基极电流。 反馈网络(201,202)耦合在耦合到水平偏转绕组(LH)的迹线电容器(CS)和驱动器晶体管的集电极之间,用于防止输出晶体管中的异常稳态操作。
    • 4. 发明公开
    • DRIVE SIGNAL WAVE LOSS DETECTION CIRCUIT AND SWITCHING TUBE DRIVE CIRCUIT
    • DETEKTIONSSCHALTUNGFÜRANTRIEBSSIGNALWELLENVERLUST UNDSCHALTRÖHRENTREIBERSCHALTUNG
    • EP3148079A1
    • 2017-03-29
    • EP14892449.1
    • 2014-12-08
    • Huawei Technologies Co., Ltd.
    • CAO, ZhenLIU, YunfengZHANG, Yanzhong
    • H03K17/74
    • H03K17/567G01R31/026G01R31/44H03B28/00H03K4/085H03K7/08H03K17/08122H03K17/122H03K17/162H03K17/18
    • A wave loss detection circuit for a drive signal and a switching transistor drive circuit are disclosed. The wave loss detection circuit includes: a diode, a first resistor, a first energy storage unit, a second resistor, and a comparison unit, where: an anode of the diode is configured to receive a first drive signal, and a cathode of the diode is connected to a first end of the first resistor; a second end of the first resistor is connected to a first end of the first energy storage unit, a first end of the second resistor, and a first input end of the comparison unit; a second end of the first energy storage unit and a second end of the second resistor are connected to a ground level, and a resistance of the first resistor is less than a resistance of the second resistor; a second input end of the comparison unit is configured to receive a threshold voltage, and if a voltage signal received by the first input end is less than the threshold voltage, a first voltage signal is output, which indicates that a wave loss occurs in the first drive signal, where the threshold voltage is a critical voltage of the first drive signal at a high level. It may be learned that in embodiments of the present invention, wave loss detection is implemented by using a basic component, and no sensor is needed, so that costs are reduced.
    • 公开了一种用于驱动信号和开关晶体管驱动电路的波浪损失检测电路。 波浪损失检测电路包括:二极管,第一电阻器,第一能量存储单元,第二电阻器和比较单元,其中:二极管的阳极被配置为接收第一驱动信号, 二极管连接到第一电阻器的第一端; 第一电阻器的第二端连接到第一能量存储单元的第一端,第二电阻器的第一端和比较单元的第一输入端; 第一能量存储单元的第二端和第二电阻器的第二端连接到地电平,并且第一电阻器的电阻小于第二电阻器的电阻; 比较单元的第二输入端被配置为接收阈值电压,并且如果由第一输入端接收的电压信号小于阈值电压,则输出第一电压信号,其指示在 第一驱动信号,其中阈值电压是第一驱动信号的高电平的临界电压。 可以理解,在本发明的实施例中,通过使用基本部件实现波浪损失检测,并且不需要传感器,从而降低成本。
    • 8. 发明公开
    • DRIVE SIGNAL WAVE LOSS DETECTION CIRCUIT AND SWITCHING TUBE DRIVE CIRCUIT
    • DETEKTIONSSCHALTUNGFÜRANTRIEBSSIGNALWELLENVERLUST UNDSCHALTRÖHRENTREIBERSCHALTUNG
    • EP3148079A4
    • 2017-05-31
    • EP14892449
    • 2014-12-08
    • HUAWEI TECH CO LTD
    • CAO ZHENLIU YUNFENGZHANG YANZHONG
    • H03K17/74G01R31/02H02M1/08H03K17/0812H03K17/12H03K17/16H03K17/18
    • H03K17/567G01R31/026H03B28/00H03K4/085H03K7/08H03K17/08122H03K17/122H03K17/162H03K17/18
    • A wave loss detection circuit for a drive signal and a switching transistor drive circuit are disclosed. The wave loss detection circuit includes: a diode, a first resistor, a first energy storage unit, a second resistor, and a comparison unit, where: an anode of the diode is configured to receive a first drive signal, and a cathode of the diode is connected to a first end of the first resistor; a second end of the first resistor is connected to a first end of the first energy storage unit, a first end of the second resistor, and a first input end of the comparison unit; a second end of the first energy storage unit and a second end of the second resistor are connected to a ground level, and a resistance of the first resistor is less than a resistance of the second resistor; a second input end of the comparison unit is configured to receive a threshold voltage, and if a voltage signal received by the first input end is less than the threshold voltage, a first voltage signal is output, which indicates that a wave loss occurs in the first drive signal, where the threshold voltage is a critical voltage of the first drive signal at a high level. It may be learned that in embodiments of the present invention, wave loss detection is implemented by using a basic component, and no sensor is needed, so that costs are reduced.
    • 公开了一种用于驱动信号的波浪损失检测电路和开关晶体管驱动电路。 波浪损失检测电路包括:二极管,第一电阻,第一储能单元,第二电阻和比较单元,其中:二极管的阳极用于接收第一驱动信号,第二储能单元的阴极 二极管连接到第一电阻器的第一端; 所述第一电阻的第二端连接所述第一能量存储单元的第一端,所述第二电阻的第一端和所述比较单元的第一输入端; 所述第一储能单元的第二端和所述第二电阻的第二端连接到地电平,所述第一电阻的电阻小于所述第二电阻的电阻; 所述比较单元的第二输入端用于接收阈值电压,若所述第一输入端接收的电压信号小于所述阈值电压,则输出第一电压信号,所述第一电压信号表示在 第一驱动信号,其中阈值电压是处于高电平的第一驱动信号的临界电压。 可以知道,在本发明的实施例中,通过使用基本组件来实现波浪损失检测,并且不需要传感器,从而降低了成本。
    • 9. 发明公开
    • A feedback arrangement in a deflection circuit
    • Rückkopplungsanordnung在einer Ablenkschaltung。
    • EP0504687A2
    • 1992-09-23
    • EP92103925.1
    • 1992-03-07
    • THOMSON CONSUMER ELECTRONICS, INC.
    • Nero, Leroy William
    • H03K4/62H04N3/18
    • H03K4/085H03K4/62
    • A driver stage of a horizontal deflection output transistor (Q2) includes a transformer (T1) having a first winding (W1) coupled to a collector of a second, driver transistor (Q1) responsive to an input signal (V OSC ) at a horizontal deflection frequency. A second winding (W2) of the transformer is coupled across a base-emitter junction of the output transistor and a third winding (W3) is coupled to the emitter of and in series with the output transistor. The third winding couples the emitter current to the base of the output transistor for supplying a substantial portion of the base current during the second half of trace. A feedback network (201, 202) is coupled between a trace capacitor (C S ) coupled to a horizontal deflection winding (L H ) and the collector of the driver transistor for preventing abnormal steady state operation in the output transistor.
    • 水平偏转输出晶体管(Q2)的驱动级包括变压器(T1),其具有响应于水平偏转的输入信号(VOSC)而具有耦合到第二驱动晶体管(Q1)的集电极的第一绕组(W1) 频率。 变压器的第二绕组(W2)跨越输出晶体管的基极 - 发射极结耦合,并且第三绕组(W3)耦合到输出晶体管的发射极并与输出晶体管串联。 第三绕组将发射极电流耦合到输出晶体管的基极,以在跟踪的后半段期间提供基本电流的大部分。 反馈网络(201,202)耦合在耦合到水平偏转绕组(LH)的跟踪电容器(CS)和用于防止输出晶体管中的异常稳态操作的驱动器晶体管的集电极之间。