TV Tuner circuit
    62.
    发明授权
    TV Tuner circuit 失效
    电视调谐器电路

    公开(公告)号:US4438529A

    公开(公告)日:1984-03-20

    申请号:US337857

    申请日:1982-01-07

    申请人: Takeshi Sato

    发明人: Takeshi Sato

    CPC分类号: H03G3/3052 H03G1/0029

    摘要: A TV tuner circuit having a dual-gate MES FET in a UHF RF amplifier and a dual-gate MOS FET in a VHF RF amplifier which are both controlled by a single AGC voltage source. The source of the MES FET is always connected to a DC source voltage input through a resistor so as to ensure that no DC current flows from an AG voltage source to the second gate of the dual-gate MPES FET in receiving VHF signals. Accordingly, there is no drop in the AGC voltage applied to the second gate of the dual-gate MOS FET in the VHF RF amplifier, thereby enabling both the UHF RF amplifier and the VHF RF amplifier to have the same gain reduction characteristics.

    摘要翻译: 具有在UHF RF放大器中的双栅极MES FET和VHF RF放大器中的双栅极MOS FET的TV调谐器电路都由单个AGC电压源控制。 MES FET的源极总是连接到通过电阻输入的直流电源电压,以确保在接收VHF信号时,直流电流不会从AG电压源流向双栅极MPES FET的第二栅极。 因此,在VHF RF放大器中,施加到双栅极MOS FET的第二栅极的AGC电压没有下降,从而使得UHF RF放大器和VHF RF放大器都能够具有相同的增益降低特性。

    Method of detecting puncture of a pneumatic tire
    64.
    发明授权
    Method of detecting puncture of a pneumatic tire 失效
    检测充气轮胎穿刺的方法

    公开(公告)号:US4067288A

    公开(公告)日:1978-01-10

    申请号:US742324

    申请日:1976-11-16

    IPC分类号: G01L17/00 B60C23/04

    CPC分类号: B60C23/0403 B60C23/0408

    摘要: A method of detecting puncture of a pneumatic tire is disclosed. The method comprises guiding an internal pressure applied to the tire through a pressure outlet opening provided in that portion of a rim which is faced to a tube into an alarm means. The alarm means may be a whistle or a buzzer circuit which becomes operated when puncture occurs to produce alarm sound.

    摘要翻译: 公开了一种检测充气轮胎穿刺的方法。 该方法包括通过设置在面向管的边缘部分中的压力出口将引导到轮胎的内部压力引导到报警装置中。 报警装置可以是在发生穿刺以产生报警声时变得操作的哨子或蜂鸣器电路。

    Switching power supply device having secondary side synchronous rectification element and control circuit therefor

    公开(公告)号:US11201555B2

    公开(公告)日:2021-12-14

    申请号:US16794428

    申请日:2020-02-19

    IPC分类号: H02M3/335

    摘要: Disclosed is a switching power supply device including: a transformer for voltage conversion; a main switching element connected in series to a primary coil; a primary side control circuit that performs on/off control of the main switching element; a synchronous rectification MOS transistor connected in series to a secondary coil; and a secondary side control circuit that performs on/off control of the MOS transistor, wherein the secondary side control circuit includes: an off-timing detection circuit that compares a drain voltage of the MOS transistor with a predetermined threshold voltage, and detects a timing to turn off the MOS transistor; and a threshold voltage setting circuit that sets the threshold voltage, and the threshold voltage setting circuit sets the threshold voltage based on a conduction period of the secondary coil or a period obtained by adding the conduction period to a conduction period of the primary coil.

    Insulated DC power supply and a method of controlling same

    公开(公告)号:US09602010B2

    公开(公告)日:2017-03-21

    申请号:US14964448

    申请日:2015-12-09

    IPC分类号: H02M3/335 H02M1/00

    CPC分类号: H02M3/33507 H02M2001/0009

    摘要: An insulated DC power supply includes a voltage transformer, a switching device and a primary-side regulating circuit. The voltage transformer includes primary and secondary windings and an auxiliary winding. The switching device causes current to flow intermittently through the primary winding. The primary-side regulating circuit receives a voltage proportional to a current flowing through the primary winding of the transformer, and a voltage proportional to a voltage induced in the auxiliary winding of the transformer to generate and output a drive pulse for turning on or off the switching device. The primary-side regulating circuit includes an ON/OFF signal generator circuit and first and second timer circuits. The switching device is turned off upon expiration of the first timer circuit, and the ON/OFF signal generator circuit does not generate a signal for turn-on of the switching device when the second timer circuit expires.

    Screen-printing stencil having amorphous carbon films and manufacturing method therefor
    68.
    发明授权
    Screen-printing stencil having amorphous carbon films and manufacturing method therefor 有权
    具有无定形碳膜的丝网印刷模版及其制造方法

    公开(公告)号:US09186879B2

    公开(公告)日:2015-11-17

    申请号:US13700061

    申请日:2011-04-01

    摘要: [Object] To provide a screen printing stencil including an amorphous carbon film, such as a DLC film, and a water-oil-repellent layer provided on at least part of the amorphous carbon film so as to exhibit high fixability.[Solution] A screen printing plate 10 of an embodiment of the present invention includes a mesh 16 fixed to a frame body 12; an emulsion layer 14 which fills up the mesh 16 and has a print pattern opening 18; an amorphous carbon film formed on at least part of the surface of an inner wall 22 of the print pattern opening 18 and composed of at least one element of silicon, oxygen, and nitrogen; and a thin film 20 of a fluorine-containing silane coupling agent formed on at least part of the amorphous carbon film.

    摘要翻译: 提供包含无定形碳膜(如DLC膜)和设置在至少部分无定形碳膜上的拒水层的丝网印刷模版,以便具有高定影性。 [解决方案]本发明的实施例的丝网印版10包括固定到框体12上的网16; 乳剂层14,其填充网状物16并具有印刷图案开口18; 形成在印刷图案开口18的内壁22的表面的至少一部分上并由硅,氧和氮的至少一种元素构成的无定形碳膜; 以及形成在非晶碳膜的至少一部分上的含氟硅烷偶联剂的薄膜20。

    Acrylic rubber composition
    69.
    发明授权
    Acrylic rubber composition 有权
    丙烯酸橡胶组合物

    公开(公告)号:US09103444B2

    公开(公告)日:2015-08-11

    申请号:US13337449

    申请日:2011-12-27

    摘要: An acrylic rubber composition comprising 100 parts by weight of an ACM polymer, which contains monomers each having a carboxyl group(s) as crosslinking-site monomers, respectively, and 5 to 30 parts by weight of vein graphite or flake graphite. An acrylic rubber composition having 100 parts by weight of an ACM polymer, which contains monomers each having a carboxyl group(s) as crosslinking-site monomers, respectively, 5 to 30 parts by weight of vein graphite or flake graphite, and 0.5 to 1.5 parts by weight of a liquid paraffin.

    摘要翻译: 一种丙烯酸类橡胶组合物,其包含100重量份的含有各自具有作为交联部位单体的羧基的单体的ACM聚合物和5〜30重量份的静脉石墨或片状石墨。 一种丙烯酸类橡胶组合物,其具有100重量份的ACM聚合物,其分别含有作为交联部位单体的羧基的5〜30重量份的静脉石墨或片状石墨,0.5〜1.5重量份 重量份的液体石蜡。