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    • 2. 发明授权
    • Amplifier system with special feedback circuits
    • 具有特殊反馈电路的放大器系统
    • US4079331A
    • 1978-03-14
    • US766996
    • 1977-02-09
    • B. Hubert PinckaersRobert T. Ruminsky
    • B. Hubert PinckaersRobert T. Ruminsky
    • H03F1/34H03F3/08H03F17/00H03F1/36
    • H03F3/087H03F1/34
    • A condition responsive element, disclosed as a negative temperature coefficient thermistor, operates in conjunction with a bridge circuit to provide a differential input to a special direct current amplifier system. The amplifier system utilizes a combination of positive feedback and negative feedback with the negative feedback always exceeding the level of the positive feedback under steady state operating conditions. The output of the amplifier means further is connected to the lowest energizing potential for the amplifier means through a network that includes a relatively fixed voltage dropping means so that changes in the negative feedback can be made to change the gain of the amplifier system with a minimum of offset or change in calibration of the condition responsive device.
    • 作为负温度系数热敏电阻公开的条件响应元件与桥式电路一起工作,以向特殊的直流放大器系统提供差分输入。 放大器系统利用正反馈和负反馈的组合,在稳态工作条件下,负反馈总是超过正反馈的电平。 放大器装置的输出还通过包括相对固定的降压装置的网络连接到放大器装置的最低能量电位,使得可以使负反馈的变化以最小的方式改变放大器系统的增益 的状态响应装置的校准偏移或改变。
    • 4. 发明授权
    • Random signal isolation circuit
    • 随机信号隔离电路
    • US4742248A
    • 1988-05-03
    • US66191
    • 1987-06-25
    • Patrick G. SmithB. Hubert Pinckaers
    • Patrick G. SmithB. Hubert Pinckaers
    • G01R23/15G01R29/027H03K5/1252H03K5/22
    • H03K5/1252G01R23/15G01R29/027
    • A random signal isolation circuit connectable to a source of signal generation wherein signals of interest tend to occur at relatively closely spaced intervals, and noise signals tend to occur at random time intervals, including a first multivibrator trigger circuit which triggers on the falling edge of a received signal, and a second multivibrator trigger circuit which triggers on a rising edge of a received signal, the first multivibrator circuit being connected when triggered to enable the second multivibrator trigger to receive subsequent received signals. The first multivibrator trigger circuit is activated over a predetermined time delay, and at the end of the time delay disables the second multivibrator trigger circuit.
    • 可连接到信号源的随机信号隔离电路,其中感兴趣的信号倾向于以相对紧密间隔的间隔发生,并且噪声信号倾向于以随机时间间隔发生,包括在第一多谐振荡器触发电路 以及第二多谐振荡器触发电路,其在接收信号的上升沿触发,所述第一多谐振荡器电路在触发时被连接,以使所述第二多谐振荡器触发器接收后续的接收信号。 第一多谐振荡器触发电路在预定的时间延迟下被激活,并且在时间延迟结束时禁用第二多谐振荡器触发电路。
    • 6. 发明授权
    • IR flame amplifier
    • 红外线火焰放大器
    • US4904986A
    • 1990-02-27
    • US293377
    • 1989-01-04
    • B. Hubert Pinckaers
    • B. Hubert Pinckaers
    • F23N1/00F23N5/08F23N5/24
    • F23N5/082F23N1/00F23N2027/16F23N2027/18F23N2029/00F23N5/24
    • A flame detector, for use with a photocell which produces a flame signal when the photocell is exposed to a flame, is used for detecting the presence of a flame. An input circuit is coupled to the photocell for receiving and buffering the flame signal. The buffered flame signal is filtered and amplified in a filter. An output circuit further amplifies the filtered flame signal providing an output flame signal. A switch is also used in the flame detector for substantially short circuiting the flame signal to a known value upon receiving a switch-close signal from either a test computer or from a hot refractory detection circuit. A flame-out condition is detected by the hot refractory detection circuit which generates an HRD signal causing the flame signal to be substantially short circuited to a known value thereby eliminating a false flame signal caused by hot refractory shimmering.
    • 用于在光电池暴露于火焰时产生火焰信号的光电池使用的火焰检测器用于检测火焰的存在。 输入电路耦合到光电管,用于接收和缓冲火焰信号。 缓冲火焰信号被过滤并在过滤器中放大。 输出电路进一步放大提供输出火焰信号的经过滤的火焰信号。 火焰检测器中还使用开关,用于在从测试计算机或热耐火材料检测电路接收到开关关闭信号时将火焰信号基本上短路到已知值。 通过产生HRD信号的热耐火材料检测电路检测到熄火状态,使得火焰信号基本上短路到已知值,从而消除由热耐火材料闪光引起的假火焰信号。
    • 8. 发明授权
    • Abnormal condition responsive means with periodic high sensitivity
    • 异常情况响应意味着具有周期性的高灵敏度
    • US4222046A
    • 1980-09-09
    • US929488
    • 1978-07-31
    • B. Hubert PinckaersStephen A. Haglund
    • B. Hubert PinckaersStephen A. Haglund
    • G08B17/11G08B17/10
    • G08B17/11Y10S331/03
    • An ionizing type smoke detector device has an output voltage which is compared with a reference voltage and upon the output dropping below the reference, a horn is energized. The reference voltage is normally quite low to reduce the number of false alarms and thus the smoke detector is relatively insensitive to smoldering fires which may require a high sensitivity of the smoke detector device. A timer means periodically modifies the reference voltage to a high value for a short period of time to make the smoke detector more responsive to smoldering fires and yet with the higher sensitivity for the short period of time the number of false alarms are kept at a minimum. Additionally a counter circuit is provided for counting the outputs of the smoke detector over three timing periods and if an output exists for three consecutive periods, an output to the horn is provided.
    • 电离式烟雾探测器装置具有与参考电压进行比较的输出电压,并且当输出降到基准以下时,喇叭被激励。 参考电压通常相当低,以减少假警报的数量,因此烟雾探测器对于可能需要烟雾探测器装置的高灵敏度的阴燃火焰相对不敏感。 定时器装置在短时间内周期性地将参考电压修改为高电平,以使烟雾探测器对阴燃火焰更有反应,并且在短时间内具有更高的灵敏度,将虚假警报的数量保持在最小 。 此外,还提供了一个计数器电路用于在三个定时周期内对烟雾探测器的输出进行计数,并且如果输出存在三个连续周期,则提供到喇叭的输出。