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    • 22. 发明授权
    • No turn-on pop noise amplifier
    • 没有开启流行噪声放大器
    • US5537081A
    • 1996-07-16
    • US382230
    • 1995-01-31
    • Toyojiro NaokawaHiroshi Hirayama
    • Toyojiro NaokawaHiroshi Hirayama
    • H03F1/30H03F3/30H03F3/26
    • H03F1/305H03F3/3088H04R3/007
    • An audio amplifier with no turn-on pop noise is achieved by the following features: (i) an input stage which operates under zero common-mode input voltage, (ii) an output stage which provides the low voltage end of its voltage swing very close to ground voltage, and (iii) a system of shunt circuits for discharging external capacitors, so as to prevent, upon subsequent power-up, pop noises due to residue charges in the external capacitors. In one embodiment, two peripheral collector transistors are provided to implement a window comparator for discharging the input terminals, the bias voltage and the output terminal of the audio amplifier.
    • 通过以下特征实现了没有开启流行噪声的音频放大器:(i)在零共模输入电压下工作的输入级,(ii)提供其电压摆幅低电压端的输出级 接近地电压,以及(iii)用于放电外部电容器的分流电路系统,以防止在后续上电时由于外部电容器中的残留电荷而引起噪声。 在一个实施例中,提供两个外围集电极晶体管以实现用于对输入端子,偏置电压和音频放大器的输出端子进行放电的窗口比较器。
    • 26. 发明授权
    • Granulating process
    • 造粒工艺
    • US4353730A
    • 1982-10-12
    • US207646
    • 1980-11-17
    • Bunji KinnoHiroshi HirayamaTetsuzo Honda
    • Bunji KinnoHiroshi HirayamaTetsuzo Honda
    • B01J2/16C05B19/00C05C1/02C05C7/02C05C9/00C05D1/00C05G3/00C05B15/00B21B15/02
    • C05B19/00B01J2/16C05C1/02C05C9/005C05G3/0011
    • Disclosed is a granulating process which comprises the steps of providing a plurality of spouted bed granulation zones arranged in series and one or more fluidizing zones for cooling and drying purposes each disposed between two adjacent ones of the granulation zones, introducing priming granules of a particulate material into the first-stage granulation zone while spraying thereinto an adherent and solidifiable liquid together with a gas stream to enlarge the priming granules, cooling and drying the enlarged granules in the succeeding fluidizing zone, passing the resulting granules through the other granulation zones and fluidizing zones successively, and withdrawing the granules enlarged to a desired particle size from the last-stage granulation zone. Also disclosed is an apparatus for carrying out this granulating process.
    • 公开了一种造粒方法,其包括提供串联布置的多个喷射床造粒区和一个或多个流化区,用于冷却和干燥目的,每个流化区设置在两个相邻的造粒区之间,引入颗粒材料的引发颗粒 进入第一级造粒区,同时与气流一起喷雾粘附和固化的液体以扩大起动颗粒,冷却和干燥后续流化区中的增大的颗粒,使得到的颗粒通过其它造粒区和流化区 并将颗粒从最后阶段的造粒区中提取出所需的颗粒尺寸。 还公开了一种用于进行该造粒工艺的装置。