Exothermic agent
    2.
    发明授权
    Exothermic agent 有权
    放热剂

    公开(公告)号:US07537002B2

    公开(公告)日:2009-05-26

    申请号:US12278601

    申请日:2007-09-25

    IPC分类号: F24J1/00 C09K5/00 C06B33/00

    CPC分类号: C09K5/18 A47J36/28

    摘要: To provide a novel water-addition type, chemical exothermic agent. An exothermic agent comprising, per mass thereof, more than 30% but not more than 40% of a calcium oxide powder having an average particle size of 75 μm to 150 μm, and not less than 60% but less than 70% of a mixed aluminum powder in which an aluminum powder having such a particle size distribution that a particle size of 45 μm pass is 70.0 to 80.0% and a particle size of 45 to 75 μm is 20.0 to 30.0% and an aluminum powder having such a particle size distribution that a particle size of 45 μm pass is 60 to 70%, a particle size of 45 μm is 20 to 30%, a particle size of 63 μm is 7 to 10% and a particle size of 75 μm is 1.0 to 2.0% are mixed at a mass ratio of 1:2. This exothermic agent may further contain 5 to 10%, relative to its total mass, of at least one inorganic salt compound selected from the group consisting of calcium sulfate, ferrous sulfate, magnesium chloride, sodium sulfite, sodium phosphate, and sodium carbonate.

    摘要翻译: 提供新型加水型,化学放热剂。 一种放热剂,其质量含有平均粒度为75〜150μm,混合比例为60%以上且小于70%的氧化钙粉末的30质量%以上且40质量%以下 其中具有45μm粒径的粒度分布为70.0〜80.0%,粒径为45〜75μm的铝粉末为20.0〜30.0%的铝粉末和具有这样的粒径分布的铝粉末 45μm的粒径为60〜70%,45μm的粒径为20〜30%,63μm的粒径为7〜10%,粒径为75μm的粒径为1.0〜2.0% 以1:2的质量比混合。 该放热剂相对于总质量还可以含有至少一种选自硫酸钙,硫酸亚铁,氯化镁,亚硫酸钠,磷酸钠和碳酸钠中的至少一种无机盐化合物。

    EXOTHERMIC AGENT
    3.
    发明申请
    EXOTHERMIC AGENT 有权
    EXOTHERMIC代理

    公开(公告)号:US20090065733A1

    公开(公告)日:2009-03-12

    申请号:US12278601

    申请日:2007-09-25

    IPC分类号: C09K5/14

    CPC分类号: C09K5/18 A47J36/28

    摘要: To provide a novel water-addition type, chemical exothermic agent. An exothermic agent comprising, per mass thereof, more than 30% but not more than 40% of a calcium oxide powder having an average particle size of 75 μm to 150 μm, and not less than 60% but less than 70% of a mixed aluminum powder in which an aluminum powder having such a particle size distribution that a particle size of 45 μm pass is 70.0 to 80.0% and a particle size of 45 to 75 μm is 20.0 to 30.0% and an aluminum powder having such a particle size distribution that a particle size of 45 μm pass is 60 to 70%, a particle size of 45 μm is 20 to 30%, a particle size of 63 μm is 7 to 10% and a particle size of 75 μm is 1.0 to 2.0% are mixed at a mass ratio of 1:2. This exothermic agent may further contain 5 to 10%, relative to its total mass, of at least one inorganic salt compound selected from the group consisting of calcium sulfate, ferrous sulfate, magnesium chloride, sodium sulfite, sodium phosphate, and sodium carbonate.

    摘要翻译: 提供新型加水型,化学放热剂。 一种放热剂,其质量含有平均粒度为75〜150μm,混合比例为60%以上且小于70%的氧化钙粉末的30质量%以上且40质量%以下 其中具有45μm粒径的粒度分布为70.0〜80.0%,粒径为45〜75μm的铝粉末为20.0〜30.0%的铝粉末和具有这样的粒径分布的铝粉末 45μm的粒径为60〜70%,45μm的粒径为20〜30%,63μm的粒径为7〜10%,粒径为75μm的粒径为1.0〜2.0% 以1:2的质量比混合。 该放热剂相对于总质量还可以含有至少一种选自硫酸钙,硫酸亚铁,氯化镁,亚硫酸钠,磷酸钠和碳酸钠中的至少一种无机盐化合物。

    Audio-frequency power amplifier
    4.
    发明授权
    Audio-frequency power amplifier 失效
    音频功率放大器

    公开(公告)号:US4433306A

    公开(公告)日:1984-02-21

    申请号:US279457

    申请日:1981-07-01

    CPC分类号: H03F3/3081 H03F1/305

    摘要: A BTL power amplifier comprises main and inverse amplifier units having the same constitution but producing outputs inverted from each other. A low impedance load is directly connected between the output ports of the main and inverse amplifier units. The present BTL power amplifier further comprises a first operation control circuit which activates only the main amplifier unit after the power switch is turned on, and a second operation control circuit which maintains the output port of the inverse amplifier unit in a floating state for a predetermined period of time after the activation of the main amplifier unit is begun. Thus, the present BTL power amplifier produces no pop noise when the power supply is initiated.

    摘要翻译: BTL功率放大器包括具有相同结构的主放大器和反相放大器单元,但是产生彼此反相的输出。 低阻抗负载直接连接在主放大器和反相放大器单元的输出端口之间。 本发明的BTL功率放大器还包括第一操作控制电路,其在电源开关接通之后仅激活主放大器单元;以及第二操作控制电路,其将反相放大器单元的输出端口保持在浮置状态, 主放大器单元激活后的时间段开始。 因此,当电源启动时,当前的BTL功率放大器不产生流声噪声。