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    • 1. 发明授权
    • Appliance/refrigerator power controller
    • 电器/冰箱电源控制器
    • US4763015A
    • 1988-08-09
    • US120870
    • 1987-11-16
    • Raymond F. St. Louis
    • Raymond F. St. Louis
    • F25B49/02H02J3/14H01H35/00H01H3/34
    • H02J3/14F25B49/025Y02B30/765Y02B70/3225Y02B70/3266Y02B70/3275Y04S20/222Y04S20/242Y04S20/244Y10T307/832Y10T307/957
    • A power controller having first and second power outlets, connections between one side of an A.C. line to one side of each outlet, a current sensing impedance connected between the other side of the A.C. line and the other side of the first power outlet, a triac connected between the other side of said A.C. line and the other side of the second power outlet, a first operational amplifier normally maintaining said triac in a conductive condition and a second operational amplifier for preventing current from flowing through said triac to said second power outlet while an appliance coupled to said first power outlet draws a given amount of current through said sensing impedance and for a given time said appliance stops drawing said given amount of current through said impedance.
    • 具有第一和第二电源插座的电力控制器,AC线的一侧与每个出口的一侧之间的连接,连接在AC线的另一侧和第一电源插座的另一侧之间的电流感测阻抗,三端双向可控硅 连接在所述AC线的另一侧和所述第二电源插座的另一侧之间,通常将所述三端双向可控硅开关保持在导通状态的第一运算放大器和用于防止电流流过所述三端双向可控硅开关的第二运算放大器到所述第二电源插座,同时 耦合到所述第一电源插座的设备通过所述感测阻抗吸取给定量的电流,并且在给定时间,所述设备停止通过所述阻抗拉伸所述给定量的电流。
    • 2. 发明授权
    • Cable television subscriber control system including addressable filters
having a variable pole
    • 有线电视用户控制系统,包括具有可变极点的可寻址滤波器
    • US4580161A
    • 1986-04-01
    • US443546
    • 1982-11-22
    • Peter R. PetrusRaymond F. St. Louis
    • Peter R. PetrusRaymond F. St. Louis
    • H04H20/76H03H7/01H04B3/00H04H20/79H04H40/27H04N7/16H04N7/173H04N7/10
    • H04N7/17363H03H7/01H03H7/1708H03H7/175H03H7/1775H04N7/166
    • A filter for use in a cable television system for filtering out a given channel comprising a two pole filter, said filter including one pole which is fixed at the center frequency to be tuned out and a second variable pole responsive to an input voltage, the second pole adapted to vary in frequency about the first pole.The filter is employed in addressable control system which includes an address generator at a head end, generating address control signals for each of a plurality of remote subscribers, a modulator for modulating a carrier with the address and control signal and coupling it onto cables, circuits at receiving terminals for receiving and demodulating the modulated carrier to recover the address signals, address decoding means for each subscriber to decode the address and control signals and circuits responsive to the decoding means to select the channels which each subscriber will receive. The system also has an encoder for encoding the status of the receive signals and a modulator for modulating a return carrier with the encoded states and putting this on the cable so that the signals may be demodulated at the head end. To carry out the demodulating and also to moduate the return signals, a local oscillator and mixer is used which generates both an intermediate frequency for the mixer and a carrier frequency for the return signal.
    • 一种用于有线电视系统的滤波器,用于滤除包括二极滤波器的给定通道,所述滤波器包括固定在待调谐的中心频率的一个极和响应于输入电压的第二可变极,第二 极点适应于第一极点的频率变化。 该滤波器用于可寻址控制系统,其包括头端的地址发生器,为多个远程用户中的每一个生成地址控制信号;调制器,用于利用地址和控制信号调制载波并将其耦合到电缆,电路 在用于接收和解调调制载波以恢复地址信号的接收终端处,响应于解码装置选择每个用户将要接收的信道的每个用户解码地址和控制信号和电路的地址解码装置。 该系统还具有用于对接收信号的状态进行编码的编码器和用于调制具有编码状态的返回载波的调制器,并将其放在电缆上,使得信号可以在头端被解调。 为了执行解调并且还对返回信号进行调制,使用本地振荡器和混频器,其产生用于混频器的中频和用于返回信号的载波频率。
    • 6. 发明授权
    • Power tool/vacumm cleaner power control
    • 电动工具/ vacumm清洁剂电源控制
    • US4825140A
    • 1989-04-25
    • US189730
    • 1988-05-03
    • Raymond F. St. Louis
    • Raymond F. St. Louis
    • B23Q11/00G05F1/45G05F1/455
    • G05F1/452B23Q11/0042Y02P70/171Y10S323/908
    • A power controller having first and second power outlets, connections between one side of an A.C. line to one side of each outlet, a current sensing impedance connected between the other side of the A.C. line and the other side of the first power outlet, a triac connected between the other side of the A.C. line and the other side of the second power outlet, a first operational amplifier normally maintaining the triac in a non-conductive condition and a second operational amplifier to cause current to flow through the triac to the second power outlet after a selected time delay whenever an appliance such as a power tool that is coupled to the first power outlet draws a given amount of current through the sensing impedance.
    • 具有第一和第二电源插座的电力控制器,AC线的一侧与每个出口的一侧之间的连接,连接在AC线的另一侧和第一电源插座的另一侧之间的电流感测阻抗,三端双向可控硅 连接在AC线的另一侧和第二电源插座的另一侧之间,通常将三端双向可控硅开关元件保持在非导通状态的第一运算放大器和第二运算放大器,以使电流流过三端双向可控硅开关至第二功率 每当诸如联接到第一电源插座的电动工具的设备通过感测阻抗吸取给定量的电流时,在选定的时间延迟之后出口。