Electric lamp and discharge devices: systems – Current and/or voltage regulation – Automatic regulation
Patent
1979-05-04
1981-03-03
Smith, Alfred E.
Electric lamp and discharge devices: systems
Current and/or voltage regulation
Automatic regulation
315151, 315205, 315DIG5, 250205, G05F 100, H05B 4139, H05B 41392
Patent
active
042543649
ABSTRACT:
A flow, or rotary type, microfilm recording apparatus for filming documents having a document transport means to move documents past an aperture area. An alternating current powered fluorescent lamp is employed for illuminating the documents in the aperture area. In order to adjust, set and maintain a substantially constant level of illumination in the aperture area and to reduce flicker, a lamp regulator circuit is provided which includes a shunted rectifier load circuit and a variable current device responsive to the illumination from the fluorescent lamp for varying the voltage drop across the shunt in accordance with the illumination.
REFERENCES:
patent: 3512102 (1970-05-01), Kubach
patent: 3670202 (1972-06-01), Paine et al.
Clevenger Jerry W.
Flint John R.
Rabindran Karavattuveetil G.
Bell & Howell Company
Moore John H.
O'Hare Thomas P.
Samlan Alan B.
Smith Alfred E.
LandOfFree
Lamp regulator circuit for rotary camera does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lamp regulator circuit for rotary camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lamp regulator circuit for rotary camera will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-81899