Filter analyzer (CB8227E)

Found in a 90s Popular Electronics, this circuit is interspersed between the filter and the oscilloscope input for analysis.

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3-bit AD Converter (CB4913E)
This fast circuit was found in an ancient American documentation. Output conversion speed is 30 ns and...
High Pass Filter for High Frequencies (CB12576E)
The filter shown in the figure can operate with frequencies up to several tens of megahertz thanks...
4 W amplifier TDA1013B (CB15982E)
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