Tag Archives: Safety

Fluke 87 Fusible Resistor

Posted on July 30, 2013 by modemhead

Properly-designed multimeters that are suitable for professional and trade use have a number of components, usually near their input jacks, that are for the sole purpose of protecting both the user and (secondarily) the multimeter itself from over-voltage and over-current … Continue reading →

Posted in How-To, Repair | Tagged , , , | 42 Comments

Inside a Multimeter Fuse

Posted on December 29, 2012 by modemhead

Ever wonder what’s inside those expensive multimeter fuses?  This is a Bussmann DMM-B-11A fuse used in many popular late-model DMMs for the 10A current range.  The arc-quenching sand filler and glass fiber-reinforced melamine tube gives it a high rupture capacity … Continue reading →

Posted in Gear | Tagged , | 3 Comments