Flat response amplifier CIR16474S CB9390E (CB9390E)

This circuit was found in a 1970s documentation. The integrated circuit used is uncommon today.

Notch Filter (CB12169E)
This filter that rejects determines frequency (notch) was found in a Popular Electronics of 1993....
400 MHz RF isolation amplifier (CB8639E)
This circuit operates with frequencies from 0.5 to 400 MHz. We find it in a 90’s NASA...
Transistor dummy load (CB22476E)
This circuit for adjusting sources simulating a load was found in a publication from 1993. The...