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    • 1. 发明授权
    • Direct current power supply device for battery charging
    • 用于电池充电的直流电源装置
    • US4147970A
    • 1979-04-03
    • US752287
    • 1976-12-20
    • Yukio OkudaNaohiro Katayama
    • Yukio OkudaNaohiro Katayama
    • H02J7/02H02J7/14H02J7/04
    • H02J7/022H02J7/1492Y02T10/92Y10S320/28
    • A direct current power supply device for rectifying an a-c voltage of external power supply and supplying d-c power to a battery and/or a d-c load characterized in that it comprises a current detector to detect a current component flowing to the battery, a voltage detector to detect a terminal voltage of the battery, a control circuit controlled by the current detector and the voltage detector, a leakage transformer functioning by external a-c power supply, and a charging converter circuit for supplying d-c power to the battery, the charging converter circuit being controlled by the control circuit and supplied power from the output of the leakage transformer, the control circuit comprising a maximum value detecting circuit to combine output voltage of the circuit detector and the voltage detector, a switching circuit controlled by the maximum value detecting circuit, a pulse generating circuit in which pulse rise time controlled by the switching circuit and a switching control circuit controlled by the pulse generating circuit, whereby the direct current power supply device is provided a predetermined current-voltage characteristic.
    • 一种直流电源装置,用于整流外部电源的交流电压并向电池和/或直流负载提供直流电力,其特征在于,其包括用于检测流向电池的电流分量的电流检测器,电压检测器 检测电池的端子电压,由电流检测器和电压检测器控制的控制电路,由外部交流电源工作的泄漏变压器和用于向电池供给直流电的充电转换器电路,充电转换器电路被控制 所述控制电路由所述泄漏变压器的输出提供电力,所述控制电路包括最大值检测电路,以组合所述电路检测器的输出电压和所述电压检测器,由所述最大值检测电路控制的开关电路, 产生电路,其中由开关电路控制的脉冲上升时间和开关控制电路 由脉冲发生电路控制,由此直流电源装置被提供预定的电流 - 电压特性。
    • 5. 发明授权
    • Refrigerating system
    • 制冷系统
    • US4179899A
    • 1979-12-25
    • US916066
    • 1978-06-16
    • Naohiro Katayama
    • Naohiro Katayama
    • F04B49/10F25B49/02H02K33/18F25B31/02
    • H02K33/18F04B49/10F25B49/022F25B2600/021Y02B30/741
    • A refrigerating system having a compressor; an inverter connected to the compressor for supplying electric energy to the compressor; and an input voltage control circuit provided on the input side of the inverter, wherein the input voltage control circuit generates output voltage signals which change at a predetermined level, including zero level, within a certain temperature range in response to the ambient temperature of the refrigerating system and in accordance with the temperature condition, the voltage thus produced being fed to the compressor via the inverter. The refrigerating system of this invention is, therefore, protected from failure or damage even when placed in an extreme temperature environment, and resumes automatically the supply of power to the compressor when the ambient temperature of the system is restored to the normal temperature.
    • 一种具有压缩机的制冷系统; 与所述压缩机连接的逆变器,用于向所述压缩机供给电能; 以及设置在所述逆变器的输入侧的输入电压控制电路,其中,所述输入电压控制电路响应于所述制冷循环的环境温度,在一定温度范围内,生成包括零电平在内的预定电平变化的输出电压信号 系统,根据温度条件,由此产生的电压通过逆变器供给压缩机。 因此,本发明的制冷系统即使在极端温度环境下被保护也不会发生故障或损坏,并且当系统的环境温度恢复到正常温度时,自动恢复向压缩机的供电。