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Old 17th April 2009, 02:35 AM   #11
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I use a Xantrex PSW cost about $700 (1000W) but I didn't look for a deal. I run it off of 12V/1000AH batteries when the sun don't shine.
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Old 17th April 2009, 04:44 AM   #12
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yes but for 1-300w in the Uk i did manage to find then for less than a $100 PSW. You do not need sally need many more watts than that to drive preamps, phono stages turntable ac motors etc. as far as i am aware.
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Old 17th April 2009, 10:47 AM   #13
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Quote:
Originally posted by mightydub

3) Instead of using a pile of batteries to provide DC to an inverter to convert to AC, and then converting back to DC in your equipment, just wire the batteries directly into the supply rails in your equipment. You can recharge them while you're asleep or at work. Then you can compare the sound of lead-acid to NiCad and Lithium ion batteries.
Can't get any cleaner than this approach.
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Old 17th April 2009, 10:59 AM   #14
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using batteries is a well tried and tested method. Audible reports on various forums using battery supplies can be variable.

Ac turntable motors that apparently need pure ac supplies would not be amenable with the battery approach alone.
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Old 17th April 2009, 01:46 PM   #15
star882 is offline star882  United States
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Default Re: Re: cheap DIY PURE AC regenerator

Quote:
Originally posted by jackinnj
The ARRL (American Radio Relay League) did a review of a.c. regenerators and it is published in the most recent issue of QST -- they demonstrate your point quite well -- the MSW converters interfere with reception on the ham bands, but the PSW units do not. We're talking about microvolts of interference being perncicous.

Expect to pay $400 to $600 for a PSW converter.
The cheapest UPS with sine wave output is just $46 new, and that's for a Tripp-Lite ECO350UPS, good for 350VA/180W. A large one rated for 1500VA/980W (Tripp-Lite SMART1500) is $344. $400-$600 will get you a quality rackmount unit, which would be overkill for our uses.

And then there's used...
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Old 17th April 2009, 03:49 PM   #16
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Default Off topic and on

Quote:
Hey this is getting nice and cosy two ladies with me in between or are you males disguised as females? Knowing this site probably the latter. Ah well can only dream.
I've often been curious, male or female? You don't have to answer, I'll keep guessing and value your comments more importantly.

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I have, as EVA is already aware another love in my life, a Piezo, she was sure it was an April fools joke.....alas she was denying the inevitable. Simply made my electronics sound more potent releasing the full potential of my audio equipment.
Wheres the link, please?

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Old 17th April 2009, 05:51 PM   #17
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fuzzymuff link got corrupted due to bad management from DIYaudio and will be reignitied at a latter date but if you are brave here it is

Piezobee -a very simple and cheap power filter
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Old 17th April 2009, 06:56 PM   #18
Eva is offline Eva  Spain
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Plenty of useless things can be bought in this world, and some of them are very expensive... Useless audio gear is a business on itself...

I'm currently designing high power amplifiers and electronics for live sound applications. They demand small size, light weight, reliability and no heat, in other words, the opposite of useless (class A was ruled out 50 yeas ago, and clas AB is about to be ruled out too in favour of class D). But when I get old I may enter that other business as a retirement
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Old 17th April 2009, 11:09 PM   #19
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It is said that truth will mostly emerge from the lips of a woman for only they have been given the power to clearly see the good from the bad.
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Old 18th April 2009, 02:32 PM   #20
star882 is offline star882  United States
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Quote:
Originally posted by audiojoy
It is said that truth will mostly emerge from the lips of a woman for only they have been given the power to clearly see the good from the bad.
And think of just where the life of every engineer, whether male or female, starts. You can learn a lot from the creators (and prospective creators, for that matter).

For the most part, it is silly to make very pure DC in the UPS only to turn it into AC and back into pure DC. It's even sillier to do that with a frequency right within your signal bandwidth.
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