3-decade logarithmic AD (CB9024E)

This circuit was found in a 70s American documentation. The converter can be of any type and the power supply for the operators must be symmetrical.

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Magnetic field meter (CB7067E)
Found in an EDN from the 80's, this circuit makes use of an operational one of the time. The...
Capacitive Loads Driver Circuit MC34001 (CB15275E)
Other operational amplifiers from the same family such as MC34002, MC35001, MC34004 and MC35004 can...
Precision Current Drain (CB5141E)
We find this circuit in an old American documentation from the 80's. The integrated is from the...