Threshold detector (CB21512E)

This circuit was found in old American documentation. It is intended to obtain a rectangular signal from a signal that has fast variations.

50 MHz Converter (CB20254E)
With this circuit it is possible to tune the signals in the 50 MHz band in a common AM receiver around...
Constant Volume Amplifier (CB12264E)
This circuit is from a 1980 publication. The circuit has high gain with weak signals and lower gain...
1.9 GHz Power Amplifier with 3 V power supply (CB12546E)
The original document is from Philiups, but now available from NXP (www.nxp.com), which is the...