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    • 2. 发明授权
    • Fuel filter apparatus with anti-electrostatic function
    • 燃油滤清器具有防静电功能
    • US06245231B1
    • 2001-06-12
    • US09353279
    • 1999-07-14
    • Naoki MakiKenji OkabeHideyuki NakaiKunihiro UmetsuAkiyoshi Mukaidani
    • Naoki MakiKenji OkabeHideyuki NakaiKunihiro UmetsuAkiyoshi Mukaidani
    • B01D3514
    • B01D35/26B01D2201/50
    • The filter apparatus is composed of a filter housing made of non-conductive material, a filter element made of conductive material contained in the filter housing, and a conductive plug with a sealing element. The filter housing has a bore and the conductive plug is inserted into the bore of the filter housing so that the clearance between the conductive plug and the filter housing is hermetically sealed by the sealing element. The conductive plug is connected in circuit to the filter element in a manner that a part of the plug is exposed out of the filter housing and an earth wire attached to the exposed portion of the plug. The static electricity generated in the filter apparatus is released via a conductive path extending from the filter element through the plug to the earth wire so that the electrostatic discharge may be prevented. The conductive plug is made of material having 107 to 1011 &OHgr;·cm resistivity. Such a value of resistivity serves to assure not only an adequate conductivity for releasing the static electricity but also an adequate resistance for preventing the electrostatic discharge from the conductive plug, if the earth wire becomes off or its connection is forgotten.
    • 过滤装置由非导电材料制成的过滤器壳体,由过滤器壳体中所包含的导电材料制成的过滤元件以及具有密封元件的导电插塞构成。 过滤器壳体具有孔,并且导电插塞插入过滤器壳体的孔中,使得导电塞和过滤器壳体之间的间隙被密封元件气密地密封。 导电塞以电路的一部分暴露在过滤器壳体外部并且附接到插头的暴露部分的接地线的方式连接到过滤元件。 在过滤装置中产生的静电通过从过滤元件通过插头延伸到接地线的导电路径释放,从而可以防止静电放电。 导电塞由具有107至1011欧姆电阻率的材料制成。 如果接地线断开或其连接被忘记,这样的电阻率值不仅用于确保释放静电的足够的导电性,而且还确保防止从导电插塞的静电放电的适当电阻。
    • 3. 发明授权
    • Switching regulator
    • 开关稳压器
    • US4585988A
    • 1986-04-29
    • US515114
    • 1983-07-19
    • Hideyuki Nakai
    • Hideyuki Nakai
    • H02M3/155H02M3/156G05F1/56
    • H02M3/1563Y10S323/901
    • A control transistor (Q.sub.2) is connected between a base and an emitter of a switching transistor (Q.sub.1) for by-passing a base current of the switching transistor (Q.sub.1). In a transitional period immediately after application of an input voltage, a time-constant circuit (R.sub.8, R.sub.9, R.sub.10, R.sub.11, C.sub.4), which is connected to a base of the control transistor (Q.sub.2) through a diode (D.sub.5), supplies the base of the control transistor (Q.sub.2) with a voltage lower than the output voltage. Therefore, the control transistor (Q.sub.2) is turned ON immediately after the application of the input voltage to by-pass the base current of the switching transistor (Q.sub.2), whereby the switching transistor (Q.sub.1) is forced to be turned OFF. The switching transistor (Q.sub.1) is turned ON again by self-excitation and then is at once made to be turned OFF again by the effect of the time-constant circuit (R.sub.8, R.sub.9, R.sub.10, R.sub.11, C.sub.4). Such operation is repeated until the voltage at the output point (B) is increased as large as a predetermined voltage value.
    • 控制晶体管(Q2)连接在用于旁路开关晶体管(Q1)的基极电流的开关晶体管(Q1)的基极和发射极之间。 在施加输入电压之后的过渡期间,通过二极管(D5)与控制晶体管(Q2)的基极连接的时间常数电路(R8,R9,R10,R11,C4)供给 控制晶体管(Q2)的基极具有低于输出电压的电压。 因此,在施加输入电压以使开关晶体管(Q2)的基极电流旁通之后,控制晶体管(Q2)立即导通,从而使开关晶体管(Q1)截止。 开关晶体管(Q1)通过自激再次接通,然后通过时间常数电路(R8,R9,R10,R11,C4)的作用再次被断开。 重复这样的操作,直到输出点(B)处的电压增加到预定电压值那么大。