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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Audio Priority Switch (CB12434E)
We found this circuit in a 1981 publication. We applied an audio signal, for example, a music...
Negative Capacitance Multiplier (CB14129E)
The circuit presented was obtained in the 1994 Linear Applications Handbook from National...
Improved Monostable Using the 4013 Flip-Flop (CIR130)
An inproved version of the circuit CIR129E is shown here. The resistorR1 must be at least 5 times...