Australian Resistors – Supplier of Wire Wound Resistors and Power Resistors

100 Watt Power Resistor Example

100 Watt Resistor Application And Specification
We had a recent enquiry for a power resistor that was to be used in the mining industry for a braking resistor for a conveyor belt system used in a coal loading terminal in Newcastle. The motor requiring the braking resistor was slightly unusual in that it was a d.c. (direct current) motor. The resistor required had the following requirements in its specification:

3.9 ohm resistance
Maximum current rating 4.5 amps (d.c.)

Using basic resistor theory we determined that the most appropriate power rating for the resistor would be found by using the formula Power (dissipated in the resistor) = […]

September 8th, 2014|Applications, Power Resistor, Resistor Applications, Wire Wound Resistors|

ASW Series Precision Resistor Used In Linear power Supply

The ASW 5 precision wire wound resistor is rated at 6.5 watts and has been used throughout the Australian electronics manufacturing sector for 30 plus years. This series of resistor has been used in many applications where tight tolerance, high inrush of current and long term reliability of operation are required.
400 Watt Linear Power Supply Application
A recent use for this resistor has been in a locally designed 400 watt linear power supply. The trend in power supply design over the last 15 years has been more towards switch mode technology as high efficiency power supply operation is possible and minimal […]

February 19th, 2014|Applications, Precision Wire Wound Resistor|

Wire Wound Potentiometer For Audio Applications

Wire wound potentiometers have been used widely within the audio visual industry as a superior alternative to carbon based potentiometers for many years. Carbon potentiometers can exhibit the following negative qualities particularly in audio applications:

Carbon potentiometers can be ‘noisy’ electrically. As the carbon elements within the potentiometers age they can begin to generate electrical noise which, when amplified for example, can result in an inferior sound quality audio applications
Potential for failure in higher power applications. Carbon ‘pots’ generally have a lower wattage rating than their wire wound counterparts. This is often the case in high end audio applications employing vacuum […]

December 7th, 2013|Applications, wire wound potentiometer|