Source Follower (CB6153E)

This stage for JFETs was found in a 1965 US publication, but is valid for modern components.

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Voltage Reference MC3403 (CB15262E)
The integrated circuit is not common nowadays since the configuration was obtained in Motorola's Linear...
AC Instrumentation amplifier (CB20987E)
This amplifier was found in Burr-Brown documentation from the 90's. The gain can be programmed by resistor...
FET IF Amplifier (CB4289E)
In the figure we have an IF amplifier step using a MOSFET. The circuit was found in a 1980s...