Found in an Electronic Design from the 90's, this circuit indicates three voltage levels by activating the LED in 3 modes: off, flashing and on for high voltage.
This circuit was found in a 90s American documentation from the 90s. The components are from that...
The AT21CS11 memory device offers an extended voltage range to accommodate lithium-ion battery...
The previous oscillators that use gatesshown in this section, and the 4093 in the basic version,...