会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 2. 发明专利
    • Improvements relating to noise suppression circuits in radio receivers
    • GB647851A
    • 1950-12-20
    • GB917148
    • 1948-04-01
    • FERRANTI LTDJONES WILLIAMJOHN PIERSON
    • H03G11/04
    • 647,851. Radio interference suppression circuit. FERRANTI, Ltd., JONES, W., and PIERSON, J. April 1, 1948, No. 9171. [Class 40 (v)] In a noise suppression circuit in a radio receiver, a biassed rectifier is connected in series in the audio frequency signal path, so that it is rendered non-conducting by noise impulses, the biassing voltage consisting of a potential proportional to the mean carrier level together with an alternating potential obtained from the output of the final audio frequency amplifier. The invention is applicable to television, sound or other radio receivers in which the bandwidth passed by the circuits up to the final detector stage is much wider than that passed by the audio stages. In Fig. 1, the final detector 9 of a superhet receiver supplies an audio frequency voltage to load resistor 8, which is applied through condenser 15 and diode 21 to the audio frequency stages via lead 26. Diode 21 is normally maintained conducting by a positive bias voltage from detector 9 which is applied through smoothing circuit 17, 18, and resistor 23. The final audio frequency output is also applied via transformer 30 to speech coil 24 which is connected in series with the diode supply circuit, so that the biassing voltage applied to the anode includes an alternating component which is in phase with and of the same amplitude as the signal inputs applied to the cathode. This enables the amount of positive D.3. bias to be reduced by means of the potentiometer circuit 17, 23, 16, so that the potential applied to the anode of diode 21 through resistor 23 is of similar waveform, but slightly more positive than that applied to the cathode. Diode 21 is thus maintained normally conducting. In the event of a noise impulse, the cathode potential of diode 21 rises steeply, but due to the attenuation of higher frequencies in the audio stages of the receiver, the potential applied to the anode resistor 23 changes only slightly so that the diode is rendered non-conducting, thus suppressing the noise impulse from the later audio stages. Alternative means such as a separate transformer winding or a potentiometer, may be used to supply the gate modulating voltage in place of the speech coil 24. Condenser 18 and resistor 17 may be selected so as to compensate for reduced feed-back to coil 24 at lowfrequencies.
    • 9. 发明授权
    • Systems and methods for disinfection
    • 系统和消毒方法
    • US07507370B2
    • 2009-03-24
    • US11359005
    • 2006-02-21
    • Larry ForneyJohn Pierson
    • Larry ForneyJohn Pierson
    • A61L2/00
    • A23L3/28A61L2/081A61L2/082A61L2/084A61L2/085A61L2/087A61L2/10A61L2/12C02F1/006C02F1/32C02F2201/3228C02F2301/024C02F2301/026Y02W10/37
    • Methods and systems for establishing Taylor-Couette flow in a fluid are provided. Aspects of the disclosed methods and systems incorporate Taylor-Couette flow in combination with a source of radiation to provide more uniform radiation exposure to the fluid and its components. Common problems of non-uniform radiation levels and concentration boundary layer effects in UV reactors are largely eliminated using the methods and devices provided herein. In an exemplary embodiment, the reactor of the present disclosure has a hollow outer cylinder or stator and a rotor positioned therein and smooth walls for both the outer wall of its rotor and the inner wall of the outer cylinder or stator in which the rotor is positioned, the space between which forming the annular fluid gap. In an alternative embodiment, either the surface of the outer wall of the rotor or the surface of the inner wall of the outer cylinder or stator or both wall surfaces could be corrugated or furrowed such that they have a series of alternating peaks and valleys. This “wavy wall” embodiment provides a more uniform dosage to the fluid parcels formed within the annular gap of the reactor than the smooth wall embodiment.
    • 提供了在流体中建立泰勒 - 库内流动的方法和系统。 所公开的方法和系统的方面包括泰勒 - 库内流与辐射源组合以提供对流体及其组分的更均匀的辐射照射。 使用本文提供的方法和装置,很大程度上消除了在UV反应器中不均匀辐射水平和浓度边界层效应的常见问题。 在一个示例性实施例中,本公开的反应器具有中空的外筒或定子和位于其中的转子,并且其转子的外壁和外筒或定子的内壁的平滑壁,其中转子被定位 ,其间形成环形流体间隙的空间。 在替代实施例中,转子的外壁的表面或外筒或定子的内壁的表面或两个壁表面可以是波纹状或沟槽的,使得它们具有一系列交替的峰和谷。 这种“波浪壁”实施例为平滑壁实施例的反应器环形间隙内形成的流体包提供了更均匀的剂量。