公开(公告)号：US3866131A

公开(公告)日：1975-02-11

申请号：US38971173

申请日：1973-08-20

Applicant: COULTER ELECTRONICS

Inventor： FIGUEROA DAVID R

IPC: G01N15/12 ,  G06G7/18 ,  H03M1/00 ,  H03K13/06

CPC classification number: G06G7/18 ,  G01N15/1227 ,  H03M1/361

Abstract: A system for integrating electrical quantities of a very large range of magnitudes employing a plurality of integrating subranges. The system includes a new electric pump circuit which feeds signals into the integrating system.

Abstract translation: 一种用于使用多个积分子范围来积分非常大范围的量值的电量的系统。 该系统包括将信号馈送到积分系统的新的电泵电路。

公开(公告)号：US3679884A

公开(公告)日：1972-07-25

申请号：US3679884D

申请日：1970-04-13

Applicant: COULTER ELECTRONICS

Inventor： FIGUEROA DAVID R

IPC: G01N15/12 ,  G06G7/20

CPC classification number: G06G7/20 ,  G01N15/1227

Abstract: Apparatus for electronically determining the mathematic root of a given value, comprising in series a plurality of integrators, a comparator, and a control circuit. A reference voltage is applied to the input of the first integrator and elicits an output from the last integrator, which output is compared by the comparator with an input voltage that reflects the value to be rooted. When the two compared voltages are equal, the control circuits undergoes a change of state, at which time the output voltage of the first integrator is a mathematic root of the given input value. The order of the root attained at the first integrator depends upon the number of integrators in the series; i.e., a series of three integrators will cause the output from the first integrator to be the cube root value of the input voltage. Moreover, other roots can be obtained from the output of the intermediate integrators.

Abstract translation: 用于电子地确定给定值的数学根的装置，包括串联多个积分器，比较器和控制电路。 参考电压被施加到第一积分器的输入，并引出来自最后一个积分器的输出，该比较器将该输出与反映要植根的值的输入电压进行比较。 当两个比较电压相等时，控制电路经历状态改变，此时第一积分器的输出电压是给定输入值的数学根。 在第一个积分器上获得的根的顺序取决于该系列中积分器的数量; 即一系列三个积分器将使得来自第一积分器的输出成为输入电压的立方根值。 此外，可以从中间积分器的输出获得其他根。

公开(公告)号：US3902053A

公开(公告)日：1975-08-26

申请号：US45178874

申请日：1974-03-18

Applicant: COULTER ELECTRONICS

Inventor： FIGUEROA DAVID R

IPC: G01N15/12 ,  G01N15/02 ,  G06G7/18

CPC classification number: G01N15/1227

Abstract: A pre-set circuit in an apparatus for measuring a dividing particle size of a particulate system operates, prior to apparatus operation, to pre-set the apparatus to indicate a selected dividing particle size. This pre-selection increases the speed at which the apparatus moves towards that particle size above and below which size predetermined fractions of the total mass of the particulate system are respectively included.

公开(公告)号：US3894221A

公开(公告)日：1975-07-08

申请号：US44726474

申请日：1974-03-01

Applicant: COULTER ELECTRONICS

Inventor： FIGUEROA DAVID R ,  DOTY EDWARD NEAL ,  MARINO ANTHONY

IPC: G01N15/12 ,  G06G7/186 ,  H03K3/351 ,  H03K7/06 ,  G06G7/12 ,  G01N27/00

CPC classification number: H03K3/351 ,  G01N15/1227 ,  G06G7/1865 ,  H03K7/06

Abstract: A speed-up circuit in an apparatus for measuring a dividing particle size of a particulate system operates to give greater weight to the particle size of particles sensed shortly after system initiation as compared to particles sensed a substantial period of time after system initiation. This increases the speed at which the system moves from an initial or reference setting towards the desired particle size above and below which size predetermined fractions of the total mass of the particulate system are respectively included.

Abstract translation: 用于测量颗粒系统的分散粒度的装置中的加速电路操作，以便在系统启动后不久感测到的颗粒的粒度比在系统启动后相当长的一段时间内感测到的颗粒更大的重量。 这增加了系统从初始或参考设置移动到高于和低于该尺寸的所需颗粒尺寸的速度，该尺寸分别包括颗粒系统的总质量的预定分数。

公开(公告)号：US3894212A

公开(公告)日：1975-07-08

申请号：US44991074

申请日：1974-03-11

Applicant: COULTER ELECTRONICS

Inventor： FIGUEROA DAVID R

IPC: G06G7/20

CPC classification number: G06G7/20

Abstract: Apparatus for electronically determining a power value of fractional or integral type of a given mathematic magnitude represented by an electrical input quantum, including a number of integrators, comparator, and control circuitry, and two switching devices for selecting numerator and denominator figures of the desired power value. A reference voltage is applied to the first integrator, and the input quantum to the comparator. When the two switching devices are in their selected positions, and the respective voltages applied to the proper terminals, the desired power value will be produced at the output of the numerator switching device.

Abstract translation: 用于电子地确定由电输入量子表示的给定数学幅度的分数或积分类型的功率值的装置，包括多个积分器，比较器和控制电路，以及用于选择所需功率的分子和分母数字的两个开关装置 值。

公开(公告)号：US3670150A

公开(公告)日：1972-06-13

申请号：US3670150D

申请日：1970-05-04

Applicant: COULTER ELECTRONICS

Inventor： HOGG WALTER R ,  FIGUEROA DAVID R

IPC: G01N15/12 ,  H03G3/20 ,  H03K17/30 ,  H03K5/20

CPC classification number: H03G3/20 ,  G01N15/1227

Abstract: Generated pulses, having random amplitudes relative to particle sizes which lie in an especially wide range, are fed into a plurality of parallel channels, at the input of each of which there is an amplifier. Each amplifier has a different amplification factor and saturates in response to a correspondingly related maximum input pulse magnitude, so as to define a subrange of acceptable pulses. Saturation of a particular amplifier disables its channel and enables the adjacent, lower amplification, higher channel to accept or be saturated by the same pulse. Each pulse, when accepted by a channel, is further processed for particle analysis purposes. During the processing, the pulse amplitude is reduced by the same amplification factor as that of the accepting channel, so as to return all pulses to their initial relative amplitudes.

Abstract translation: 具有相对于特别宽范围内的粒度的随机幅度的生成脉冲在每个具有放大器的输入处被馈送到多个并行通道中。 每个放大器具有不同的放大因子并响应于相应的相关的最大输入脉冲幅度而饱和，以便限定可接受的脉冲的子范围。 特定放大器的饱和度禁用其通道，并使相邻，较低放大，较高通道接受或被相同脉冲饱和。 每个脉冲在被通道接受时被进一步处理以进行粒子分析。 在处理过程中，脉冲幅度减小了与接收通道相同的放大倍数，从而将所有脉冲返回到其初始相对幅度。

公开(公告)号：US3622864A

公开(公告)日：1971-11-23

申请号：US3622864D

申请日：1969-07-09

Applicant: COULTER ELECTRONICS

Inventor： CLAPS WILLIAM A ,  FIGUEROA DAVID R

IPC: G01N15/12 ,  G01N27/00 ,  G05F1/10 ,  G06F7/38

CPC classification number: G01N15/1227

Abstract: To improve the precision operation of a ''''Coulter Counter'''' particle analyzer, which is subject to small magnitude, yet statistically important input power voltage changes that are random in nature and magnitude, the current applied to the microscopic sensing aperture and the voltage applied to the threshold circuits, which monitor and respond to the amplitudes of the particle signals derived from the sensing aperture, are caused to track one another; so that variations of input power do not adversely affect the precision output of the particle analyzer. In series with both the sensing aperture circuit and the threshold circuits is the power supply, a polarity control switch and a current sensing resistor. Interposed between the current sensing resistor and the threshold circuits is an absolute value amplifier, which applies to the threshold circuits a voltage proportional to the aperture current. Additionally, the output from the absolute value amplifier is compared with an arbitrary voltage reference, and the result of the comparison is employed to determine both the aperture current and the threshold voltage.