Crowbar for power supply (CB8367E)

This protection circuit was obtained in a 1969 Electronic Design. The SCR can be the current equivalent, depending on the fuse current.

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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)
This audio amplifier has an internal DC volume control with logarithmic characteristics and a...