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    • 3. 发明授权
    • Air conditioner
    • 冷气机
    • US5499508A
    • 1996-03-19
    • US220092
    • 1994-03-30
    • Yasuhiro AraiTetsuo SanoTetsuji YamashitaTakaki IwanagaKoichi Goto
    • Yasuhiro AraiTetsuo SanoTetsuji YamashitaTakaki IwanagaKoichi Goto
    • F25B9/00F25B13/00F25B1/00
    • F25B13/00F25B9/006
    • An air conditioner employs a refrigerating cycle in which a non-azeotropic mixture of high and low boiling coolants is sealed. The ratio between the high and low boiling coolants of the coolant mixture changes according to a change in the opening of an electric expansion valve 7. A level sensor 19 is arranged in an accumulator 17 that accumulates the liquid phase of the coolant mixture. A value detected by the level sensor is used to calculate the ratio between the high and low boiling coolants actually circulating in the refrigerating cycle. According to the opening of the valve 7 or the ratio between the actual quantities of the high and low boiling coolants, basic operation parameters such as the operation frequency of a compressor 1 are changed. This results in stabilizing and optimizing the operation of the refrigerating cycle even if a cycle temperature or pressure is changed due to a change in the ratio between the high and low boiling coolants of the coolant mixture.
    • 空调采用密封高沸点冷却剂的非共沸混合物的制冷循环。 冷却剂混合物的高沸点冷却剂和低沸点冷却剂之间的比例根据电动膨胀阀7的开度的变化而变化。液位传感器19布置在蓄积器17中,蓄积器17积聚冷却剂混合物的液相。 使用液位传感器检测的值来计算在冷冻循环中实际循环的高沸点冷却剂与低沸点冷却剂之间的比例。 根据阀7的打开或高低沸点冷却剂的实际比例,改变压缩机1的运转频率等基本动作参数。 这导致即使循环温度或压力由于冷却剂混合物的高沸点冷却剂与低沸点冷却剂之间的比率变化而改变而使冷冻循环的操作稳定和优化。
    • 4. 发明授权
    • Switching power supply device, semiconductor device, and control method
    • 开关电源装置,半导体装置和控制方法
    • US07782638B2
    • 2010-08-24
    • US11525716
    • 2006-09-22
    • Kazuhiro MurataTetsuji YamashitaYoshihiro Mori
    • Kazuhiro MurataTetsuji YamashitaYoshihiro Mori
    • H02H7/12
    • H02M3/33507H02M1/32
    • A plurality of arrangements for detecting an overload of energy supplied to an output part enables selecting latch-off or auto-recovery overload protection by the operation of a switching device. When the drain current peak of the switching device exceeds a predetermined level denoting an overload, the FB pin voltage also rises to latch off, and when the drain current peak then reaches a maximum level, the CC pin voltage drops to a predetermined level and limits the oscillation period of the switching device because output power cannot be increased even if the load increases further. Latch-off overload protection can be applied when the drain current peak exceeding a predetermined level is detected, and auto-recovery overload protection can be applied when the CC pin voltage is detected to drop to a predetermined level.
    • 用于检测提供给输出部件的能量过载的多个布置使得能够通过开关装置的操作来选择闭锁或自动恢复过载保护。 当开关器件的漏极电流峰值超过表示过载的预定电平时,FB引脚电压也上升到锁存状态,当漏极电流峰值达到最大值时,CC引脚电压下降到预定值 即使负载进一步增加,开关器件的振荡周期也不能增加。 当检测到超过预定电平的漏极电流峰值时,可以应用锁存过载保护,并且当检测到CC引脚电压下降到预定电平时,可以应用自动恢复过载保护。
    • 7. 发明授权
    • Semiconductor device for controlling switching power supply
    • 用于控制开关电源的半导体器件
    • US07075802B2
    • 2006-07-11
    • US11089332
    • 2005-03-25
    • Tetsuji Yamashita
    • Tetsuji Yamashita
    • H02M3/335H02M7/44
    • H02M3/33523H02M2001/0032Y02B70/16
    • A semiconductor device (51) for controlling a switching power supply, includes a switching element (1) and a switching control circuit. During an intermittent switching operation of the switching element (1), when a return signal is outputted from a light load detection circuit (32) before the counting of a counter circuit (14), the switching operation of the switching element (1) is restarted at the timing of a transformer reset signal from a transformer reset detection circuit (13) after the return signal is outputted. When the return signal is outputted from the light load detection circuit (32) after the counting of the counter circuit (14), the switching operation of the switching element (1) is restarted, regardless of the transformer reset signal, only when the return signal is outputted.
    • 用于控制开关电源的半导体器件(51)包括开关元件(1)和开关控制电路。 在开关元件(1)的间歇切换动作期间,当在计数器电路(14)的计数之前从轻负载检测电路(32)输出返回信号时,开关元件(1)的开关动作为 在输出返回信号之后,从变压器复位检测电路(13)的变压器复位信号的定时重新开始。 当在计数器电路(14)的计数之后从轻负载检测电路(32)输出返回信号时,不管变压器复位信号如何,开关元件(1)的开关操作仅在返回 信号被输出。
    • 8. 发明授权
    • High-voltage generator
    • 高压发电机
    • US5394048A
    • 1995-02-28
    • US95911
    • 1993-07-23
    • Tetsuji YamashitaHitoshi Kawabata
    • Tetsuji YamashitaHitoshi Kawabata
    • H01L41/04H01L41/107H02M3/24H02M7/48H01L41/08
    • H01L41/107H01L41/044
    • A high-voltage generator employing a piezoelectric transformer has an inverter having input and output terminals connected to input terminals of the piezoelectric transformer, respectively; a feedback resistor connected to the input terminals of the piezoelectric transformer in parallel with the inverter; and first and second capacitors. The first capacitor is connected between the input terminal of the inverter and a ground. The second capacitor is connected between the output terminal of the inverter and the ground. The inverter, feedback resistor, and capacitors form a self-exciting oscillator to drive the piezoelectric transformer so that the piezoelectric transformer produces a high-voltage output. Since the inverter, feedback resistor, and capacitors are small, thin and light, the high-voltage generator as a whole is also small, thin and light.
    • 使用压电变压器的高压发生器具有分别连接到压电变压器的输入端的输入和输出端的逆变器; 反馈电阻器与变压器并联连接到压电变压器的输入端子; 以及第一和第二电容器。 第一个电容器连接在变频器的输入端和地之间。 第二个电容连接在变频器的输出端和地之间。 逆变器,反馈电阻和电容器形成自激振荡器来驱动压电变压器,使得压电变压器产生高压输出。 由于变频器,反馈电阻和电容器体积小,重量轻,高压发生器整体也小,薄,轻。
    • 10. 发明授权
    • Switching power supply device and semiconductor device
    • 开关电源装置和半导体装置
    • US09030849B2
    • 2015-05-12
    • US13696037
    • 2010-06-15
    • Tetsuji Yamashita
    • Tetsuji Yamashita
    • H02M3/335H02M1/36H02M1/00
    • H02M1/36H02M3/33523H02M2001/0048Y02B70/1491
    • In a switching power supply device which intermittently executes a switching operation, a power loss which occurs in resumption of the switching operation is reduced. A semiconductor device works as a control circuit for the switching power supply device, and includes: an intermittent oscillation control circuit which alternately gives an instruction for execution and suspension of the switching operation of a switching element; a bottom detecting circuit which detects a bottom of a ringing voltage that develops when the switching element is OFF; a bottom-monitoring time period timing circuit which times a bottom-monitoring time period starting as soon as the instruction for the execution of the switching operation is given; and a turn-on control circuit which turns ON, before the timing of the bottom-monitoring time period ends, the switching element only when the bottom of the ringing voltage is detected.
    • 在间歇地执行切换动作的开关电源装置中,减少了开关动作恢复时发生的功率损耗。 半导体装置作为开关电源装置的控制电路,并且包括:间歇振荡控制电路,交替地给出执行开关指令和暂停开关元件的开关动作; 底部检测电路,其检测当所述开关元件断开时产生的振铃电压的底部; 一个底部监视时间周期定时电路,其在给出用于执行切换操作的指令之后立即开始底部监视时间段; 以及在底部监视时间段的定时结束之前接通的导通控制电路,仅在检测到振铃电压的底部时才将开关元件接通。