Multiplexed AD Converter (CB9023E)

This 8-channel converter was found in a 1970s American documentation. The integrated circuits used are not common today.

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Sequential Indicator (CB20342E)
This circuit was found in documentation from the 80s. The circuit did not include resistors from...
Operational AC DC Converter (CB15807E)
This circuit used in instrumentation is suggested by National Semiconductor, now Texas Instruments and...
1.2 to 25 V x 3 A Variable Power Supply (CB1578E )
The source shown in the figure provides output voltages in the range of 1.2 to 25 V with currents up...