April 12, 2020, 3:22 pm
A fuse is a sacrificial device for the protection the rest of the circuit in an over-current situation. There are situations we need to know with some reasonable confidence what the actual maximum current is for a given fuse without destroying it. This is beneficial when the specifications for the fuse at hand is unknown (e.g. with cheap no-name brand fuse), or the circuitry to be protected is so critical that the interrupt current level must be specified precisely.
Continue reading ‘Non-destructive Testing of Fuses’ »
Tags:
Array 3711A,
BK Precision 2709B,
Constant Current,
Electronic Load,
Experiment,
Fuse,
HRC Fuse,
Melting Integral,
Non-destructive Testing,
Polymetric PTC,
PPTC,
PTC,
Resettable Fuse,
Temperature Coefficient Category:
Electronics |
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August 22, 2011, 9:32 pm
Just because you are using a true RMS multimeter does not automatically mean you should always trust the readings of your measurements. In fact, most true RMS multimeters can only offer reliable readings under certain conditions. In this post, I will examine some of the pitfalls in RMS voltage measurements and show you some concrete examples on how RMS readings can sometimes be misleading. Continue reading ‘On RMS Voltage Measurement’ »