|
Our double conversion design:
The utility supply from the wall outlet is filtered and surge protected. It is then converted by a rectifier circuit to a finely regulated direct current. This DC is then used by the inverter circuit to regenerate a new clean AC source. The battery module placed on the DC side ensures that no matter what happens to the utility power supply, there will be full current and voltage at the rated value to keep your components connected to an ideal pure power supply.
 This double conversion technology provides a perfect barrier to power problems that might exist in the utility line. No distortions can pass through the DC intermediate circuit. No EMI, no RFI, no spikes, no high voltage transients, no damaging surges can reach your components. In fact, if it were possible for a damaging spike to get past the PurePower™’s built in surge protection system, it would still not reach your sensitive components.
The PurePower™ APS maintains the accuracy of its 120 volt sine wave at a steady 60 cycles even at its full output no matter how low or high the voltage of the utility supply, so the amplifier never suffers current limits, regardless of how momentary.
Utility supply vs. Regeneration:
Does regenerated power really give me anything that the power in my wall can't provide?
Recent testing conducted at Audio Ideas Guide magazine shows what the PurePower™ can do. The power at the wall was measured to have a lower than optimal voltage and a host of harmonic distortion at various frequencies resulting in flat topped wave forms, but reasonably good as utility supplies go. The power output of the PurePower™ APS was measured showing full availability with minimal harmonics or wave form distortion.
The power requirements of a Bryston 9B SST THX 5 channel power amplifier was measured with broad spectrum pink noise input. Measurements were take both on utility and with the addition of the APS. There were dramatic differences in current draw between the two setups. Without the PurePower™ APS, the amplifier could not draw the current it was asking for. The addition of the APS increased the power draw of the Bryston by almost 2 amps. The measurements also showed marked reduction in total voltage distortion and the ability to match the needs of the equipment. This is achieved without the overwhelming overhead of some other regeneration technologies - the PurePower™ APS has an energy efficiency of between 85 and 92%!
|
Parameter
|
Wall Outlet
|
PurePower™
|
Comments
|
|
RMS Voltage (volts)
|
118.00
|
119.00
|
The APS provided better voltage regulation compared to the available untreated power.
|
|
Peak Voltage (volts)
|
160.00
|
162.00
|
The APS showed less flat topping in the presence of the load’s high current peaks.
|
|
Pk–Pk Voltage (volts)
|
326.00
|
336.00
|
|
RMS Current (amps)
|
1.41
|
1.67
|
The untreated power supply could not provide the full RMS and Peak current demanded by the load. (Bryston 9B SST)
|
|
Peak Current (amps)
|
3.88
|
5.60
|
Current Unlimiting!
The PurePower AC regeneration design provides something you might not expect from a power solution. Many power filtering and conditioning products are routinely accused of limiting the current flowing though them, thus starving the power amps with their need for lots of instantaneous current on demand. Testing shows how the PurePower actually has the capability to deliver more current that even a completely unfettered and unfiltered household outlet. In the Bryston equipment test measurements shown above, the 9B SST demanded AC to produce the required output to the speakers. The Amp drew 3.88 amps at its peak demand. When powered from the PurePower 1050, the amp was able to draw 5.6 amps at peak! That's almost a 50% increase! This is possible due to the nature of our AC regeneration technology. One of our primary goals is to be able to provide for maximum current variation on demand without allowing the sine wave or voltage level to be adversely affected. While you want voltage to be rock solid, noise to be at a minimum and the sine wave to be pristine, you also want to be able to have the most current possible available exactly when it is needed. The more instant current change you can provide without affecting any of the other power variables, the better your system can perform.
 |
|
The Top 5 Things to Know About Power Conditioning
|
|
|
|
1. What's the difference between a power conditioner and a power strip?
Typically, not much. Most power conditioners are merely power strips on steroids. The first power conditioners were power strips with surge protection and a noise filter. Every variation on that theme is still a power strip at heart and only capable of a mode rate degree of protection, some noise reduction, but no isolation from the power utility. There is no reason to spend more than $99 on one of these, although some brands are offered at over $3,000. Generally, they do nothing to regulate the voltage or correct the sine wave. The bigger they are, the more power they consume, drawing power away from your system. A few expensive models add stepped voltage regulation and one even has sine wave correction as well. These are nice features to put on a power conditioner but still don’t offer true isolation from the local utility. Our biggest complaint about the expensive conditioners is that many of them crush the dynamics of your audio system to such an extent, they ruin the listening experience.
2. What are the most common AC problems?
There are 10 things that can go wrong with your inbound AC power from the local power company that will affect your system. We call them the ten Power Gremlins.
1. Blackouts: A total loss of utility power
2. Frequency variation: A change in frequency stability
3. Transients:  Instantaneous high voltage increase in the range of nanoseconds
4. Harmonics:  Distortion of the normal waveform, generally transmitted by non-linear loads
5. Over Voltage: Increased line voltage for extended periods of a few minutes to a few days
6. Brownouts:  Reduced line voltage for extended periods of a few minutes to a few days
7. Sags:  Short term low voltage
8. EMI  (Electro Magnetic Interference):
High Frequency waveform - often referred to as noise
9. RFI  (Radio Frequency Interference):
Also a High Frequency waveform - often referred to as noise
10. Surges:  Short term high voltage
|
|
3. Do typical power conditioners protect my system from all 10 Power Gremlins?
No. Some provide protection from 2 or 3 or even 5 of these threats but no power conditioning product except PurePower solves all of them at the same time in one box. See our Power Gremlin chart to compare the protection capabilities of typical power conditioner technologies.
4. What is AC Regeneration?
This is the term used to  describe the process of converting the inbound AC from the utility company into DC, then back to AC again as a perfect, noise-free, stable voltage sine wave. PurePower’s proprietary design delivers newly generated AC to your system, at the point of use and always keeps it totally isolated from the utility supply.
5. Who makes the world’s best AC Regenerator? PurePower. We make the only authentic AC Regenerator on the market today because it’s the only product to offer total isolation from the local utility. This means it  delivers a perfect 120v output, (or 230v in export markets) regardless of what’s going on at the local utility, regardless of the load. No other product on the market can make that statement. No other product can deliver as much current, measured in RMS watts, as PurePower can because nothing else is as efficient. In fact, PurePower can outperform the wall outlet in watts delivered to power hungry amps by 10%, driving your amplifier to new heights of dynamic range with the latest HD audio content.
Free Power Audit
Want to know how PurePower fits with your system? We'll analyze your system's power requirements using our extensive database of A/V components and send a full report on the power requirements of your system.
Click here for your free Power Audit
|
|
|
|
|
|
|
There are at least 10 distinct types of power problems, which we refer to as the “power gremlins”, that can negatively affect your audio equipment. Effects range from audible noise or hum in your components, loss of dynamic range, reduced quality of sound or video, slow burnout of components, loss of presets, complete loss of sound or picture, ruined recordings, burned out video projector bulbs, speaker damage, all the way to the complete destruction of electronic circuits leaving nothing but smoke and charred ruins.
Many audio power conditioning products have addressed either a single problem (such as surge arrestors) or only a few of the problems. These products are designed to reduce the effects of one or more of the gremlins, but none have offered a fully effective solution to the full range of power problems. While some areeffective at their intended task, a surprising number have made extravagant claims of effectiveness, or promise sound system improvements based on questionable engineering principles. Others operate so inefficiently that they are unable to deliver the full current required by high power audio equipment.
PurePower AC regeneration is the ONLY technology that provides one perfect solution to eliminate all 10 Power Gremlins.
See the Comparison Matrix to see how various power protection and conditioning technologies deal with the power gremlins.
|
|
1. Blackouts
A total loss of utility power |
|
|
2. Frequency variation
A change in frequency stability |
|
|
3. Transients
Instantaneous high voltage increase in the range of nanoseconds |
|
|
4. Harmonics
Distortion of the normal waveform, transmitted by non-linear loads |
|
|
5. Over Voltage
Increased line voltage for extended periods of a few minutes to days |
|
|
6. Brownouts
Reduced line voltage for extended periods of a few minutes to days |
|
|
7. Sags
Short term low voltage |
|
|
8. ElectroMagnetic Interference (EMI)
Also a high Frequency waveform - often referred to as noise |
|
|
9. Radio Frequency Interference (RFI)
High Frequency waveform - often referred to as noise |
|
|
10.Surges
Short term high voltage
|
Section II - What's In Your Wall Outlet?
|
| Above is a chart from the RX report that summarizes the results of the 21 day monitoring of the Utility supplied AC power at customer's Home. Note that during the monitoring period the voltage varied from a low of 112 volts to a high of 252. There were literally hundreds of sags, transient and power distortion "events" captured - and each one was recorded and graphed in the preparation of this very extensive and detailed report. |
In the summary chart the severity and significance of the power problems are rated with a color key from severe to acceptable.
Below is the log form a single day - December 22. It is clear the utility was not providing our customer with a Christmas present of good power quality.
|
 |
 |
 |
| Above is a chart summarizing some of the different voltage sag types captured during the monitoring study.Notice how the left hand side of the chart is in percent of voltage (either 120V or 240V). The Red area is very bad and the farther to the right the "dots" are, the longer in duration (time) of the sag. The longer the voltage events, the more damage can occur. It should be noted that this chart illustrates sag events unacceptable for high-end electronics. But the Utility finds it acceptable to deliver power of this grade. The Utility measures things in minutes while electronics measure things in picoseconds {A picosecond is one trillionth of a second (0.000000 000 001 seconds)}. |
The transient chart clearly indicates the threat posed by these short (many are in the nanosecond range) voltage events. They are scattered throughout the test period and many are greater than 200 volts above or below nominal.
Their short duration means they don't pack the power of a major surge event - and they go unnoticed by the homeowner since they do not cause lights to flicker. However, they can do serious damage and even explosive failure to high power transistors and other sensitive solid state electronics.
|
Above is the voltage data log for a 24 hour period. Note how the voltage vacillates constantly from minute to minute and and hour to hour. It is also clear that the utility voltage at midnight is significantly higher than at 7 pm, hence the familiar audiophile comment that the system always sounds better at midnight.
This is a typical day except for the very dramatic voltage drop in the early AM.
Section III - Why On-Site AC Regeneration is required.
|
| The efficacy of on-site AC regeneration in redressing the power quality problems associated with Utility delivered AC power can be easily demonstrated. When AC power with distortion, noise, voltage instabilities, sags, power outages and even unstable frequency is used as the source power supply for a PurePower double conversion AC regenerator the result is dramatic. The output of the regenerator is pure power with a new, clean, stable voltage sine wave. |
It doesn't matter how distorted the input - the output is always the same. It is a complete solution.
Other Power conditioning technologies can ameliorate one problem or another - but never completely remove it. AC regeneration has been the preferred power quality solution in high tech, scientific and sensitive electronic installations for a number of years. Now there is an AC regenerator designed specifically for High end Audio and Video.
|
| Bad Power in
|
Clean power out
|
| Highly Distorted Power in
|
Low distortion out
|
|
From company headquarters in the historic city of Cambridge Ontario, company founder and president Damian Janzen said "Owner's of high end AV gear know their systems can't reach their full performance potential if the inbound power is unstable, noisy, and distorted. PurePower products convert the inbound AC from the local service provider to DC, removing all the noise and distortion in the process, before creating a brand new AC voltage sine wave, augmented by it's own internal battery system. The battery system provides total isolation from the local power grid, so that the very common voltage sags, surges, and transients can't affect the AV system, even in a blackout".
For technical specifications and a more detailed explanation of AC regeneration technology, visitwww.purepoweraps.com and read the technology pages.
|
If you own a high performance system, and suspect your AC power is degraded, PurePower has the solution you have been searching for.
If you already know you have problems, you can simply go to www.purepoweraps.com/Audit.htm and tell us about your system. We will provide a free Power Audit to help you choose the correct AC Regenerator.
If you are unsure of your AC power - and you want the world's most definitive Home power quality analysis - just email
This e-mail address is being protected from spambots. You need JavaScript enabled to view it
and ask about PurePower's brand new on site power quality audit. We can arrange a sophisticated engineer supervised PQ monitoring program just like the one described in this white paper. It is the definitive analysis of your utility power.
|
|
|
Your AC power supply would be ideal if you could plug your system components directly into the main generator at the nearest hydro electric generating station without the intervening transmission system and other customers sharing the line – assuming you could hear the music over the roar of the waterfalls. The PurePower™ APS provides the next best thing. It quietly generates a new, clean, 120 volt 60 cycle sine wave right beside your audio or home theatre system, so there is no opportunity for outside influences to introduce unwanted waveform distortions.