Abstract
The presented circuit is a 4-wire stabilizer of the average voltage on the filament. It has enhanced stability and low power consumption because it works as a switching regulator. The rectangular power pulses supplied to the filament produce small rectangular voltage pulses which are observed by a separate pair of wires connected to the filament ends. These pulses are amplified and converted to the saw-like signal by a low-pass filter. The saw-like signal is connected to the inverting input of the Schmitt trigger, whereas the noninverting input is connected to a reference voltage supplied either from a potentiometer or generated by a computer. The regulator is used in our laboratory for precision potassium analysis by the isotope dilution method. The obtained reproducibility of potassium determination in terms of relative standard uncertainty is 0.5%.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
