Britton Chance - Philadelphia PA Victor Legallais - Philadelphia PA John R. Sorge - Philadelphia PA Norman C. Graham - Philadelphia PA
International Classification:
G01J 330 G01J 348
US Classification:
356 85
Abstract:
A multi-wavelength time-sharing apparatus usable in various different configurations of optical measuring equipment to provide a plurality of time-shared optical channels and including appropriate circuitry. The apparatus employs a turbine-driven filter wheel having a shaft position-encoding arrangement consisting of a hollow shaft portion which is internally illuminated. The hollow shaft portion has two sets of spaced apertures cyclically communicating with respective angularly spaced pairs of externally fixedly mounted phototransistors which are sequentially illuminated as the shaft portion rotates and which produce timing pulses which drive Schmitt triggers, which, in a typical embodiment, in turn produce pulses compatible with a logic circuit employed to decode the phototransistor signals into triggers for driving a 4-channel switched gain equalizer, a dark current clamp, and detector gates. Appropriate selection of the signals enables the instrument to function as a fluorometer or a spectrophotometer.
Aug 1995 to 2000 Custodial ManagerAndrews International/U.S. Security Inc Jenkintown, PA May 2010 to Jun 2012 Security OfficerUNICCO Services Company Newton, MA Mar 2004 to Aug 2005 Events and Weekend SupervisorSpectaGuard Inc Wynnewood, PA Feb 1992 to May 1994 Corporate Security OfficerPrivate Industry Council of Philadelphia Philadelphia, PA Dec 1988 to Nov 1991 Office Services CoordinatorU.S Army
Apr 1981 to Nov 1989 Clerk, Publications Clerk
Education:
Thomas Jefferson University Hospital at Methodist Philadelphia, PA 2010 to 2010 Medical Instrument SterilizationComputer Learning Center Philadelphia, PA 1992 to 1993 certificate in Computer OperationsJohn Bartram High School Philadelphia, PA 1978 to 1982 Diploma in MG Program