This circuit is from the 80's but uses common components today. The relay is voltage sensitive according to the power supply used. Transistors may be general purpose types.
This circuit also appears elsewhere on this site, obtained from other sources. This is an 80's...
The circuit shown in the figure has an output voltage rise time of 0.22 ms and an input time...
November 2016 - The On Semiconductor Reference Development Kit and WDK1.0GEVK Reference Kit can...