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    • 6. 发明公开
    • Metallic members joining method and reflow soldering method
    • Verfahren zum Verbinden von metallischen Elementen und Verfahren zum Reflow-Löten
    • EP1136170A1
    • 2001-09-26
    • EP01302611.7
    • 2001-03-21
    • MIYACHI TECHNOS CORPORATION
    • Moro, Kyoji
    • B23K11/24B23K11/25B23K20/02H01R43/02B23K3/03
    • B23K20/023B23K3/033B23K11/24B23K11/252B23K11/257H01R43/0214
    • In each odd-numbered unit current-supplying period of a plurality of unit current-supplying periods making up a set current-supplying time, a control unit (32) subjects only positive switching elements (22, 26) to continuous switching operations at an inverter frequency while keeping negative switching elements (24, 28) in an OFF state, whereas in each even-numbered unit current-supplying period, the control unit (32) subjects only the negative switching elements (24, 28) to continuous switching operations while keeping the positive switching elements (22, 26) in an OFF state. This allows a secondary current I 2 having substantially a trapezoidal current waveform to flow through a secondary circuit of a power supply apparatus in the positive direction in each odd-numbered unit current-supplying period but in the negative direction in each even-numbered unit current-supplying period. When a current-halting signal WS is received in the process of such a supply of current, the control unit (32) brings the switching control of an inverter (16) to a halt to interrupt the supply of current at once.
    • 在构成设定的电流供给时间的多个单位供电时段的每个奇数单位供电时段中,控制单元(32)仅在正向开关元件(22,26)中进行连续切换操作 逆变器频率同时保持负开关元件(24,28)处于断开状态,而在每个偶数单元供电时段中,控制单元(32)仅使负开关元件(24,28)仅进行连续切换操作 同时保持正开关元件(22,26)处于OFF状态。 这允许具有大致梯形电流波形的次级电流I2在每个奇数单位电流供应周期中沿正方向流过电源装置的次级电路,但在每个偶数单位电流供给周期中沿负方向流动, 供应期。 当在这种电流供给的过程中接收到电流停止信号WS时,控制单元(32)使逆变器(16)的开关控制停止,立即中断电流供应。
    • 10. 发明公开
    • Electronic automatic temperature control
    • 自动电动机。
    • EP0530997A1
    • 1993-03-10
    • EP92307436.3
    • 1992-08-13
    • EDSYN INCORPORATED
    • Griffith, Robert C.
    • G05D23/24B23K3/03G05B1/02
    • B23K3/033G05D23/1913G05D23/24
    • A temperature control circuit is disclosed utilizing automatically either the electric heating (or cooling) element or a separate sensor to measure the instantaneous temperature of a thermal load device (40). Either a pulsating dc or an ac electric power source (16) may be used with the temperature sensing occurring at near-zero points of the source voltage waveform. The sensor (68) forms one element of a Wheatstone bridge (90) which when unbalanced by a value lower than a chosen reference value, causes a monostable oscillator (70) to flip for at least several cycles of the source power. This turns on a power SCR (42) to feed electric current to the thermal load to increase its temperature (and resistance) until the bridge is again balanced to reverse the state of the monostable oscillator and turn off the SCR. A simple, reliable two step, user friendly calibration circuit is provided for the temperature selecting component. For multiple channel applications the circuit need be reiterated only in part whereby major portions thereof remain common to the various channels and need not be duplicated, thereby minimizing manufacturing cost, component space, heat generation, and power consumption.
    • 公开了一种温度控制电路,其自动地利用电加热(或冷却)元件或单独的传感器来测量热负载装置(40)的瞬时温度。 可以使用脉动直流或交流电源(16),其中温度感测发生在源极电压波形的接近零点处。 传感器(68)形成惠斯通电桥(90)的一个元件,当麦克斯电桥(90)不平衡低于所选参考值的值时,使单稳态振荡器(70)翻转至少几个源功率周期。 这将打开电源SCR(42)以将电流馈送到热负载以增加其温度(和电阻),直到电桥再次平衡以反转单稳态振荡器的状态并关闭SCR。 为温度选择部件提供了一个简单可靠的两步,用户友好的校准电路。 对于多通道应用,电路仅需要重复部分,其中其主要部分保持为各种通道共同,并且不需要重复,从而使制造成本,部件空间,发热量和功率消耗最小化。