by Nyal Mellor
April 08, 2013
A passive device is anything that doesn’t contain any powered electronic circuitry. Examples of passive devices include isolation transformers, surge protectors and resistor-inductor-capacitor (RLC) type conditioners. Power re-generators and UPS systems are active devices.
Continue Reading
by Nyal Mellor
April 08, 2013
Isolation transformers are oversized, specially designed versions of the transformers found in linear power supplies. They are called isolation transformers because there is no direct electrical connection through an isolation transformer (excepting safety ground).
Continue Reading
by Nyal Mellor
April 08, 2013
A UPS is a device that provides battery power to connected electronics in the event of a power outage. There are three different types of UPS systems: standby, line interactive and online ‘dual conversion’.
Continue Reading
by Nyal Mellor
April 08, 2013
All devices with spinning hard drives - computers, music servers, home automation systems, etc should be on a UPS.
Continue Reading
by Nyal Mellor
April 08, 2013
Without a UPS the projector lamp and electronics can overheat leading to failure and shortened lifespan.
Continue Reading
by Nyal Mellor
April 08, 2013
How much power does the UPS need to supply? Does the UPS output a true or stepped sine wave? What is the audible noise level? What is the level of powerline noise on the input and output sides of the UPS?
Continue Reading
by Nyal Mellor
April 08, 2013
Regenerators are conceptually very similar to online UPS systems except that there is no battery. They are basically amplifiers designed to output 120V at 60Hz.
Continue Reading
by Nyal Mellor
April 08, 2013
A power conditioner with voltage regulation keeps its output at a fixed voltage of 120V for a range of input voltage conditions. There is normally a minimum and maximum voltage within which the regulator can maintain a constant output voltage.
Continue Reading
by Nyal Mellor
April 08, 2013
Power conditioners with this feature can turn off their outputs and
hence connected equipment in the event of a potentially damaging and
prolonged under or over voltage condition.
Continue Reading
by Nyal Mellor
April 08, 2013
Whole room power conditioning is a term we invented to refer to the use of a single conditioner to supply power to a number of dedicated electrical circuits feeding a single room.
Continue Reading
by Nyal Mellor
April 08, 2013
A dedicated line is an electrical circuit used solely for the purpose of supplying power to an audio or video system. No non-AV equipment should be connected to a dedicated line. The line runs back to the main service panel or a sub panel.
Continue Reading
by Nyal Mellor
April 08, 2013
Continue Reading
