Clinical thermometer (CB7244E)

For measurements between 30 and 40º C this circuit was found in the documentation of 1968. The sensor is a difficult component to obtain today.

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Divide-by-5 Counter (CB159E)
Figure bellow shows how the flip-flops of a 4027 can be connected to perform a divide-by-5 counter [odd...
Maxim MAX20056B 6 Channel High Brightness LED Controller
Maxim MAX20056B 6 Channel High Brightness LED Controller Maxim Integrated makes available through...
Flash Trigger (CB6750E)
This circuit was originally suggested in a 1968 publication to generate a white mark (frame) on a...