Ramp Generator (CB10040E)

This circuit was found in an integrated circuit manual from the 1980s. The circuit can be designed based on modern operational amplifiers.

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Heartbeat Detector (CB25472S)
This heartbeat sensor circuit was found in the July 1992 issue of Radio Electronics magazine. The...
30 W Motor Control L200 (CB15146E)
We found this circuit in the 1982 SGS integrated circuit manual. The integrated circuit is not...
Simple pulse extender (CB8921E)
This TTL pulse stretcher or stretcher was found in a 90's EDN. The time constant R x C1 determines...