Harmonic Distortion Meter (CB26187E)

This complex circuit was found in the 1993 edition of the Electronics Experimenter's Handbook. Most of the components are still common today.

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Horn (CB18961E)
This circuit can also be used as a shield if the excitation is made with 5 V and the output stage...
Circuit with sensor (CB7104E)
This type of sensor was used in sensitive infrared systems from the 1960s. This circuit was found...
VCO with a Frequency Range of 100: 1 (CB1545E )
We find this circuit in a documentation for engineers from 1971. The circuit generates rectangular and...