This circuit with 10 MHz and 1.25 MHz TTL outputs was found in an American documentation from the 1980s. The used integrated circuit is uncommon today.
The base of this circuit is 1/4 of an integrated circuit 4136 which consists of a quadruple 741....
This circuit is from 1999 documentation. The integrated circuit used is not very common today. Both...
The configuration shown in the figure makes use of two comparators of the four available on the...