12-bit DA converter (CB9331E)

We found this circuit in documentation from Analog Devices from the 90s. The components are from that time, uncommon today.

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Extended range power control (CB7935E)
This circuit was found in a General Electric documentation from 1965. The circuit is full wave for...
Null Detector (CB11550E)
We found this circuit in the Texas Instruments' Linear Circuits Applications. It uses an...
Operational Variable Astable (CB14827E)
In the presented circuit it is possible to vary the frequency of the rectangular signal produced. This...