High Speed Line Driver (CB14335E)

The circuit is from 1994 National Semiconductor documentation. The component is not easy to obtain, but there are equivalents that can be searched.

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FM Transmitter with Auxiliary Input (CB17254E)
This circuit is from 2001 documentation and consists of a small FM transmitter with two inputs, one...
Band Rejected Tuned Filter (CB13074E)
A very interesting and versatile filter circuit, suggested by National Semiconductor is the one...
Low Power AC Shield (CB18265E)
In this application, from English documentation, we have the way to activate an AC load up to 10 W...