Fuel Gauge (CB26016E)

This automotive circuit was found in the June 1997 issue of Electronis now magazine. The circuit uses a common operational amplifier powered by 12 V.

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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...