Logic Probe in a cigar tube
This is the logic probe that I built in about 1980, cased in an aluminium cigar tube. The metal is only slightly thicker than tinfoil, hence the various "dings" that are visible! The chip is a CMOS CD4049, and the circuit came from an article in ETI (Electronics Today International), December 1979, page 101.
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Uploaded on September 2, 2006
Taken on September 2, 2006
Logic Probe in a cigar tube
This is the logic probe that I built in about 1980, cased in an aluminium cigar tube. The metal is only slightly thicker than tinfoil, hence the various "dings" that are visible! The chip is a CMOS CD4049, and the circuit came from an article in ETI (Electronics Today International), December 1979, page 101.
5,500
views
0
faves
0
comments
Uploaded on September 2, 2006
Taken on September 2, 2006