This circuit is from a 1980s Motorola documentation. The circuit can be made with modern equivalent components. The original circuit is for the 115 Vac (110 V) grid and has two settings.
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...