Operating Tips

SPD3303D/S Series

SPD programming tips

December 29, 2018

The SPD series of power supplies feature remote programming capabilities and can be controlled via USB or LAN connection. In this note, we will use Python and PyVISA to create a program that will connect to an SPD, enable the output, delay, and then disable the output. There are two areas that differ from some … Continued

What is the difference between a switching and linear power supply?

October 24, 2017

Linear DC regulated power supplies (“linear supplies”) alter the output voltage to the required value through the power frequency (50/60 Hz alternating current) voltage transformer. After being lowered (or raised) to the appropriate AC voltage value, the waveform is rectified, filtered, and stabilized by a voltage regulation circuit, and is then output as a regulated … Continued

Calibration Traceability

October 23, 2017

Excerpt from the ANSI-ASQ National Accreditation Board: http://anab.org/news/newsletter/winter-2014/nist-traceability-statements NIST Traceability Statements Many calibration customers request on their accredited calibration certificates a statement that the measurement is traceable to the National Institute of Standards and Technology (NIST). They want assurance that the standards used for the calibration are ultimately traceable to the International System of Units … Continued