This circuit was obtained from an American technical manual from the 80's. The integrated circuit is an operational of the time that can be replaced by a modern equivalent.
January 2017 - The new Honeywell RSC TruStability ™ pressure sensor mounting board is available from...
The IC used in this project is not common these days, but if you have one you can build a high...
June 2016 - It can be obtained from Mouser Electronics the new gate driver optocoupler from...