Apparatus for conducting measurements of electrochemiluminescent phenomena
US5061445A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1988 |
| Grant date | Oct 29, 1991 |
| Priority date | — |
| Expiry date | Nov 3, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K4/026
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for conducting measurements of electrochemiluminescent (ECL) phenomena includes a cell unit having an electrode configuration for inducing the emission of ECL light by the application of a selected voltage waveform to a sample fluid including an ECL moiety. The sample fluid is transported to and from the cell unit by a flow-through pump/tubing system. A photomultiplier tube detects the intensity of light emitted by the sample fluid during the ECL measurement process. A computer control unit both analyzes the detected data and provides digital control signals to the cell unit to generate effective voltage waveforms. The digital control signals are supplied to a novel pulse width modulated digital to analog converter which outputs a ramp voltage waveform having the desired slope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.