The filter presented is from 1994 but can be implemented with a more modern equivalent. We found this setting in the National Semiconductor Linear Applications Handbook.
This circuit makes use of an integrated LM2907. The circuit is from an old documentation being...
This sensitive signal follower with an LM386 integrated circuit can be used in both audio and RF...
This transmitter, found in Raytheon documentation from 1957, has a range of a few meters. L1 can...