Found in a Philips' 1968 documentation, this circuit is slightly different from the previous one. The components are also from the era, and modern equivalents can be used.
This circuit is from a 1965 Argentine publication (Radio Chassis Television). The original...
Very rapid brightness changes or flares that occur on the sun can be detected with this circuit that...
The components of this filter are calculated using conventional formulas (see mathematics section of...