Model contol (CB22185E)

This miniature railway control circuit was found in an English documentation from the 1980s. The integrated circuit is an operational amplifier.

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Target Shooting (CB4881E)
This simple 80's CMOS game was found in an English magazine of the time. It appears elsewhere on this...
Experimental Bicycle Speedometer (CB18710E)
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Nanosecond pulse generator (CB9076E)
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