This circuit was found in ancient American documentation. It makes use of the operational amplifiers of the time, but it can be implemented with modern equivalents.
Other CMOS gates can be used in this sensor, which we found in the July 1995 Electronic Now...
This power supply is not protected from shorts in the output. Output voltage is given by the...
This circuit came out in a publication called Electronics Handbook of 1993. Q1 can be a 2N2222 or even...