This untuned circuit uses one of the world's first commercial transistors, the CK722, having been found in a 1966 publication. Equivalent modern types 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...