公开(公告)号：US3705311A

公开(公告)日：1972-12-05

申请号：US3705311D

申请日：1971-01-05

Applicant: SOPELEM

Inventor： LLOP HELENIO

IPC: G05F1/00 ,  G05F1/44 ,  H02M7/06 ,  H02J1/00

CPC classification number: G05F1/44 ,  Y10T307/367 ,  Y10T307/675

Abstract: A regulatable continuous high voltage generator has a source of alternating voltage with the primary winding of a transformer connected thereto through a variable gain modulator. A first secondary of the transformer is connected through a rectifier and filter to a load receiving the operating voltage. A second secondary of the transformer is connected through a rectifier and filter to a counter reaction circuit which controls the variable gain modulator.

公开(公告)号：US3923401A

公开(公告)日：1975-12-02

申请号：US43469874

申请日：1974-01-18

Applicant: SOPELEM

Inventor： LLOP HELENIO ,  LEFORT PIERRE

IPC: G01N21/43 ,  G01N21/46

CPC classification number: G01N21/43

Abstract: Apparatus yeilding an electrical signal representative of the position of a boundary line between adjacent light and dark zones, with respect to a reference position, comprises two photoelectric cells having a separation in the direction in which the boundary moves. Means are provided whereby the output P1 of that one of the photocells which is last reached by the boundary during its movement is multiplied by a constant k, yielding a signal K.P1 which, together with the signal P2 from the other photocell, is applied to a difference amplifier providing an output signal which passes through zero when K.P1 P2. This signal may be applied to one input of a second difference amplifier, receiving also an output of a third differential amplifier providing a negative signal whenever P2 is less than a predetermined value. The final output signal may be applied to control traversal of the assembly including the two photocells, so as to obtain a measure of the boundary displacement.

Abstract translation: 相对于参考位置，代表相邻光和暗区域之间的边界线的位置的电信号的装置包括在边界移动的方向上具有间隔的两个光电单元。 提供了这样的装置，其中在其移动期间由边界最后到达的光电单元的一个的输出P1乘以常数k，产生信号K.P1，其与来自另一个光电池的信号P2一起被应用 提供一个差分放大器，当K.P1 = P2时提供通过零的输出信号。 该信号可以被施加到第二差分放大器的一个输入端，每当P2小于预定值时也接收提供负信号的第三差分放大器的输出。 可以应用最终输出信号来控制包括两个光电管的组件的遍历，以便获得边界位移的量度。

公开(公告)号：US3477790A

公开(公告)日：1969-11-11

申请号：US3477790D

申请日：1966-07-26

Applicant: SOPELEM

Inventor： BATON JEAN PIERRE ,  LLOP HELENIO

IPC: G01B5/004 ,  G01B11/00 ,  G01B11/24 ,  G05B19/14 ,  G06K11/00 ,  G01B9/08

CPC classification number: G01B5/004 ,  G01B11/002 ,  G01B11/2433 ,  G05B19/14 ,  G06K11/00

公开(公告)号：US3672777A

公开(公告)日：1972-06-27

申请号：US3672777D

申请日：1970-09-21

Applicant: SOPELEM

Inventor： LLOP HELENIO

IPC: G01N21/43 ,  G01N21/46 ,  H01J39/12

CPC classification number: G01N21/43

Abstract: A REFRACTOMETER IN WHICH THE POSITION OF THE CHANGE IN INTENSITY OF THE REFRACTOMETER BEAM AT THE CRITICAL ANGLE IS SENSED BY A PHOTOELECTRIC SENSOR COMPRISING AN OPAQUE SCREEN DEFINING TWO OR THREE SLITS BEHIND EACH OF WHICH A PHOTOELECTRIC CELL IS POSITIONED, THE OUTPUTS OF THE CELLS BEING SUPPLIED TO AN ELECTRONIC CIRCUIT WHICH PROVIDES A SIGNAL AT THE MEANS POSITION OF THE CHANGE IN INTENSITY.

公开(公告)号：US3587420A

公开(公告)日：1971-06-28

申请号：US3587420D

申请日：1967-09-13

Applicant: SOPELEM

Inventor： LLOP HELENIO

IPC: G03B7/085 ,  G03B7/10 ,  G03B19/18

CPC classification number: G03B7/085

Abstract: AN AUTOMATIC CAMERA DIAPHRAGM CONTROL USES A PHOTO RESISTANT CELL WHICH RECEIVES LIGHT THROUGH THE DIAPHRAGM. THE CELL IS SUPPLIED WITH AN ADJUSTABLE CONSTANT CURRENT. AN OVERALL SENSITIVITY RESULTS WHICH IS INDEPENDENT OF NOMINAL ILLUMINATION AND WHICH DEPENDS SOLELY ON THE RELATIVE VARIATIONS OF ILLUMINATION.