AD converter with LCD display (CB9025E)

This circuit was obtained in Teledyne documentation from the 70s. The converter component is uncommon today.

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Crystal Oscillator (CB6522E)
The crystal frequency of this circuit found in an American documentation is limited only by the...
Simple light relay (CB7895E)
This relay without lock uses a general-purpose transistor. The relay is according to the supply....
Function Generator (CB26023E)
This circuit was found in the August 1997 Electronics Now magazine. The circuit uses well-known...