G - Physics – 05 – F
Patent
G - Physics
05
F
323/6
G05F 1/618 (2006.01) C25B 7/00 (2006.01) G01N 27/447 (2006.01) G01R 27/26 (2006.01)
Patent
CA 1297152
16 CONTOUR-CLAMPED HOMOGENEOUS ELECTRIC FIELD GENERATOR ABSTRACT OF THE DISCLOSURE A contour-clamped homogeneous electric field generator having a plurality of electrodes, each elec- trode being connected to a node which is maintained at a prescribed electrical potential. The electrical po- tential at the node is maintained by sourcing current into or sinking current away from the node when the voltage at the node varies. The current source comprises a first transistor having an input terminal connected to a voltage/current supply and an output terminal connected to the node. The current sink comprises a second transistor having an input terminal coupled to the node, and an output terminal coupled to the voltage/current supply ground. To control the operation of the first and second transistors, a comparator is coupled to the node for comparing a node- derived voltage to a reference voltage and for providing an oscillating pulse train in response thereto. The duty cycle of the pulse train varies in response to node voltage variation. The oscillating output of the comparator is communicated to an RC circuit which averages the voltages of the pulse train, and the averaged voltage is communicated to a control terminal of the second transistor. When the duty cycle of the pulse train increases, the increased average voltage turns on the second transistor for sinking current away from the node. When the duty cycle of the pulse train decreases, the first transistor turns on for injecting current into the node. The first and second transistors thus maintain the voltage at the prescribed level. B9/2558-295F
597142
Bio-Rad Laboratories Inc.
Fetherstonhaugh & Co.
LandOfFree
Contour-clamped homogeneous electric field generator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Contour-clamped homogeneous electric field generator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Contour-clamped homogeneous electric field generator will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1187305