by Riedon | Feb 1, 2017 | Caddock, Digikey, Resistors, vishay, Wirewound resistors
Bleed Resistors – Maintaining a Charge Bleed resistors are placed in parallel with a power supply’s load and are used to discharge the smoothing capacitors in linear AC-DC converters and also the reservoir capacitors utilized by DC-DC converters. These...
by Riedon | Nov 17, 2016 | Resistors, Wirewound resistors
Wirewound Resistors To Absorb Energy Events The source of a pulse can come from many places including lightning, inductive loads (motors), capacitor banks, switchgear, or even switching heating and ventilation systems in and out of a circuit. A device such as a...
by Frida Hovsepian | Jul 13, 2016 | Caddock, Current Shunt, DC Ammeter Shunts, Digikey, Ohmite, Resistors, Ultronix, vishay, Wirewound resistors
Resistor Tables Standard Resistor Tables (Based on EIA Preferred Values)
by Riedon | Apr 13, 2016 | Caddock, Current Shunt, DC Ammeter Shunts, Digikey, Ohmite, Resistors, vishay, Wirewound resistors
Power supplies are a major application for current sensing resistors. Space-saving surface-mount designs are especially popular in small supplies, miniature DC-to-DC converters, small battery charging circuits, switching power supplies, and uninteruptible power...
by Riedon | Feb 29, 2016 | Digikey, Resistors, Wirewound resistors
A resistor’s Temperature Coefficient of Resistance (TCR) tells how much its value changes as its temperature changes. It is usually expressed in ppm/°C (parts per million per degree Centigrade) units. What does that really mean? Let’s use an example:...
by Riedon | Feb 19, 2016 | Current Shunt, Digikey, Resistors, Wirewound resistors
The subject of power supplies is potentially very broad and the application of resistors in power supplies is quite diverse. Here we will focus on power supply units (PSUs) designed for use in electronic appliances that nominally require fixed DC outputs ranging from...
