公开(公告)号：US3417249A

公开(公告)日：1968-12-17

申请号：US33441963

申请日：1963-12-30

Applicant: IBM

Inventor： AKMENKALNS IVARS G ,  WILFINGER RAYMOND J ,  WILSON ALAN D

IPC: H01L31/173 ,  H03K17/94

CPC classification number: H01L31/173 ,  H03K17/941

公开(公告)号：US3882358A

公开(公告)日：1975-05-06

申请号：US37384873

申请日：1973-06-26

Applicant: IBM

Inventor： DESKEVICH STEPHEN ,  PEACOCK JAMES C ,  TYNAN RICHARD F ,  WILSON ALAN D

IPC: H05B41/30 ,  H05B37/00

CPC classification number: H05B41/30

Abstract: Charging circuit for a flash lamp in which flash holdover is prevented by establishing a high impedance charging circuit for a predetermined time after flash initiation to allow deionization of the lamp plasma and, after a predetermined time, establishing a low impedance charging circuit to provide a fast charging rate for the energy storage device. Impedance levels are changed in the circuit by gating a silicon controlled rectifier (SCR) with a control signal a predetermined time after flash initiation so as to bypass a high impedance circuit path in parallel therewith. As the energy storage device becomes fully charged, the SCR returns to its blocking condition, the control signal terminates and the lamp can be fired again.

Abstract translation: 用于闪光灯的充电电路，其中通过在闪光开始之后建立高阻抗充电电路达预定时间来防止闪光灯保持，以允许灯等离子体去离子，并且在预定时间之后建立低阻抗充电电路以提供快速 储能装置的充电率。 通过在闪光开始之后的预定时间内通过控制信号选通可控硅整流器（SCR），以便与其并联的高阻抗电路路径旁路，在电路中改变阻抗水平。 当能量存储装置充满电时，SCR返回到其阻塞状态，控制信号终止并且灯可以再次点火。

公开(公告)号：US3672744A

公开(公告)日：1972-06-27

申请号：US3672744D

申请日：1970-10-06

Applicant: IBM

Inventor： STROPE DOUGLAS H ,  WILSON ALAN D

IPC: G03H1/02 ,  G02B27/00

CPC classification number: G03H1/0486 ,  G03H1/02 ,  G03H2001/0232 ,  G03H2001/186 ,  G03H2210/62 ,  G03H2260/16 ,  Y10S359/90

Abstract: A SYSTEM AND METHOD FOR HOLOGRAPHY IN WHICH THE RECORDING MEDIUM IS EXPOSED AND VIEWED IMMERSED IN A LIQUID WHICH IS EFFECTIVE TO RELIEVE THE RESIDUAL STRESSES IN THE MEDIUM.