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.
This control for motors up to 1 A was found in a Siliconix documentation using its own component....
This filter rejects the hum of 60 Hz from power grid, being placed between the signal source and...
In the figure we have an interface using an optical coupler and the comparator LM339 or any...