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    • 1. 发明申请
    • CONSTANT-VOLTAGE AND CONSTANT-CURRENT BUCK CONVERTER AND CONTROL CIRCUIT
    • 恒定电流和恒定电流转换器和控制电路
    • US20140239930A1
    • 2014-08-28
    • US14033341
    • 2013-09-20
    • Hu WangYajiang ZhuRuixia FeiShuzhuang Lv
    • Hu WangYajiang ZhuRuixia FeiShuzhuang Lv
    • H02M3/10
    • H02M3/156H02M1/08H02M3/10H02M7/2176H02M2001/0009H02M2001/0022
    • A control circuit is provided for a buck converter that includes at least an inductor coupled to an output of the buck converter. The control circuit includes a power switch configured for coupling to a line voltage and configured for charging the inductor, an input line voltage sampling circuit, and a constant-voltage (CV) and constant-current (CC) control module coupled to the power switch. During a charging period of the inductor, the CV and CC control module is configured to control the power switch to provide a constant output current by maintaining a constant peak inductor current, even when the input line voltage changes. During a discharging period of the inductor, the CV and CC control module is configured to monitor the sensed output voltage to control the power switch to provide a constant output voltage.
    • 提供了一种用于降压转换器的控制电路,其包括耦合到降压转换器的输出的至少一个电感器。 控制电路包括被配置为耦合到线路电压并被配置为对电感器充电的电源开关,输入线电压采样电路和耦合到电源开关的恒压(CV)和恒流(CC)控制模块 。 在电感器的充电期间,CV和CC控制模块配置为通过保持恒定的峰值电感电流来控制电源开关以提供恒定的输出电流,即使输入线路电压发生变化。 在电感器的放电期间,CV和CC控制模块被配置为监视感测的输出电压,以控制电源开关以提供恒定的输出电压。
    • 8. 发明申请
    • LIFT MECHANISM OF TILE-BASED GAME MACHINE
    • 基于游戏机的动力机制
    • US20120326388A1
    • 2012-12-27
    • US13528820
    • 2012-06-20
    • Hu WangGuo-Xin Wu
    • Hu WangGuo-Xin Wu
    • A63F9/00
    • A63F9/20A63F1/12
    • A lift mechanism of a tile-based game machine is installed on a table. The lift mechanism includes a lift plate. One end of the lift plate is coupled to the table, and another end of the lift plate is a movable end. The movable end of the lift plate is provided with a door, and the door is provided with a restoring spring. A lift bracket is provided under the lift plate. A crank is provided under the lift bracket to cooperate with the lift bracket. An electric motor is connected with the crank. The present invention has a simple configuration and the tiles can be ascended quickly and the failure rate is low.
    • 平台式游戏机的升降机构安装在桌子上。 升降机构包括升降板。 升降板的一端连接到工作台上,提升板的另一端是可动端。 提升板的可动端设有门,门设有复位弹簧。 升降机托架位于升降板下面。 在起重机托架下方设有一个曲柄,与起重机支架配合。 电动机与曲柄连接。 本发明具有简单的结构,瓦片可快速上升,故障率低。
    • 9. 发明申请
    • CONTROL CIRCUIT AND METHOD FOR AUDIBLE NOISE SUPPRESSION IN A POWER CONVERTER
    • 电力转换器中可控噪声抑制的控制电路和方法
    • US20120293146A1
    • 2012-11-22
    • US13198981
    • 2011-08-05
    • PingAn ZhaoHuizhen ZhuHu WangChao Gao
    • PingAn ZhaoHuizhen ZhuHu WangChao Gao
    • G05F1/10
    • H02M3/33507H02M1/44H02M2001/0032Y02B70/16
    • A control circuit is configured for controlling a power switch to regulate an output of a power converter. The control circuit is configured to increase a switching frequency of the power switch when a first signal representing a magnitude of the power converter is below a first output level. In some embodiment, the first output level is selected such that when the first signal is below the first output level, the power converter may generate audible noise. In an embodiment, when the first signal is above the first output level, the control circuit is configured to turn off the power switch when a second signal representing a current in the power switch is above a first reference level. On the other hand, when the first signal is below the first output level, the control circuit is configured to turn off the power switch if the second signal reaches a lower reference level.
    • 控制电路被配置为用于控制功率开关以调节功率转换器的输出。 控制电路被配置为当表示功率转换器的幅度的第一信号低于第一输出电平时,增加电源开关的开关频率。 在一些实施例中,选择第一输出电平,使得当第一信号低于第一输出电平时,功率转换器可产生可听见的噪声。 在一个实施例中,当第一信号高于第一输出电平时,控制电路被配置为当表示电源开关中的电流的第二信号高于第一参考电平时,关闭电源开关。 另一方面,当第一信号低于第一输出电平时,如果第二信号达到较低的参考电平,则控制电路被配置为关闭电源开关。