Logarithmic generator (CB7593E)

This circuit has a 100 dB dynamic We found it in a Popular Electronics from the 90s. Equivalent operational can be used.

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Half step motor control (CB8768E)
We found this circuit in a 90's EDN. The circuit is based on a control integrated that is still...
60 Hz rejector filter (CB12752E)
This circuit is based on a Texas LinMOS integrated circuit that consists of an operational...
High Voltage Electrolytic Capacitor Test (CB6885E)
This circuit, when connected to the 110 V power grid makes it possible to test capacitors with...