[TechAssist] Re: use a battery backup UPS for TV,DVD,surround amp system protection ?

  • From: "Ty" <ty1k@xxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Fri, 7 May 2004 13:23:12 -0700

This question has me intrigued. Why is it being debated by proficient
electronic technicians?
OK. MODERN televisions, VCRs, DVDs, anything with a pulse power supply.
Reasoning that modern Pulse Power supplies essentially run on DC, I was
wondering what difference it makes what kind of sign, square, or whatever,
wave gets rectified in order to charge the primary filter capacitor. As long
as the filter is charged to the critical starting voltage and is maintained.
Of course, you will have to raise the input to meet the output criteria.
Heck, you can use DC for input and you can even ignore the polarity due to
the bridge!.
Mmmmm....
Take a voltage reading on the main filter cap under full load.
Connect a bunch of batteries to attain the voltage. Connect it across the
filter and you got your problem solved. Instant UPS. Of course, you will
have to modify the ON/OFF switch. Another problem is charging inrush. Use a
diode and resistor combination. Heck, we can figure it out!
Now the 10 lb transformer in a power amplifier or in the Microwave is
another story, but not impossible if batteries are used after the
transformer. Storage would be a problem. Where would you store enough
batteries to power a Magnetron and finish cooking that turkey.
Lets see. Move the holyday dishes to the basement, move the regular dishes
to where the holyday dishes were, and WALLA!  LOOK OUT TURKEY!
Just realized the biggest obstacle to my simple idea. How am I going to get
the wife to allow me to drill a hole in the countertop...

Have fun! >(;o)

Ty

Tiberius Kraemer
BLUE STAR ELECTRONICS
3312 Silverton Rd. NE
Salem, Oregon
Phone: 503 391 1491
Mailto:ty1k@xxxxxxxxxxx



-----Original Message-----
From: techassist-bounce@xxxxxxxxxxxxx
[mailto:techassist-bounce@xxxxxxxxxxxxx]On Behalf Of Phil Bader
Sent: Friday, May 07, 2004 11:44 AM
To: techassist@xxxxxxxxxxxxx
Subject: [TechAssist] Re: use a battery backup UPS for TV,DVD,surround
amp system protection ?


Shoot, jerry why are your facts so depressing!
Seriously, I called APC, and the tech said the "stepped sine wave"
versions may not work satisfactorily with , say, an engraving machine
(My next door neighbor has a trophy shop). he suggested their better
Smart UPS line, I think its called.Anyway, it would be sort of self
defeating to destroy the very thing you are wanting to protect...
Phil Bader

J Silverman wrote:

>The computer power supplies work fine with the 115 VAC (RMS) square wave
>output from the low cost UPSs. Most consumer electronic equipment is rated
>for 115 volt RMS 60 Hertz sine wave, plus or minus 10%. If you use the
>computer UPS with consumer electronic equipment the internal voltages and
>losses are different than the spec., so you are not sure if you will have
>functional problems or if things will overheat. A lot of stuff will
probably
>work OK, but you cant be sure. So the suggestion was made to use UPSs that
>have a sine wave output and these are many times more expensive than the
>ones with a square wave output.
>
>Jerry Silverman
>Greentron Inc
>4 Newland Ave
>Greenville SC 29609
>864 232 3889
>Fax 271 2080
>mailto:greentron@xxxxxxx
>----- Original Message -----
>From: "Kevin" <kevintv@xxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Friday, May 07, 2004 5:30 AM
>Subject: [TechAssist] Re: use a battery backup UPS for TV,DVD,surround amp
>system protection ?
>
>
>
>
>>Using a UPS for a computer is also designed to save what a person is
>>working on at the time of a power outage.  When the power goes out the
>>computer stays on and the person can save his work and then shut the
>>computer down properly.  In some cases it will also prevent data from
>>being corrupted on the hard drive when the power goes out.  Having the
>>power outage causes windows to shut down improperly, which could corrupt
>>data on the hard drive.
>>
>>Kevin Wilks
>>Kevin's TV & Video Repair
>>Penticton BC Canada
>>kevintv@xxxxxxx
>>
>>
>>-----Original Message-----
>>From: techassist-bounce@xxxxxxxxxxxxx
>>[mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Hoyt's TV
>>Sent: Friday, April 30, 2004 2:11 PM
>>To: techassist@xxxxxxxxxxxxx
>>Subject: [TechAssist] Re: use a battery backup UPS for TV,DVD,surround
>>amp system protection ?
>>
>>Considering the price of some TVs and stereos these days, I'm surprised
>>they
>>don't push UPS's for those, like they do for computers. Computers were
>>the
>>first things that were overly sensitive but TVs etc. have now caught up.
>>
>>
>>Russ Hoyt
>>Hoyt's TV
>>Exeter, NH
>>
>>
>>----- Original Message -----
>>From: "Larry Poffen" <lpoffen@xxxxxxx>
>>To: <techassist@xxxxxxxxxxxxx>
>>Sent: Friday, April 30, 2004 3:46 PM
>>Subject: [TechAssist] Re: use a battery backup UPS for TV,DVD,surround
>>amp
>>system protection ?
>>
>>
>>
>>
>>>I have used a APC 1000 for my personal stuff for about 2 years.  I had
>>>
>>>
>>a
>>
>>
>>>power surge that took it out this year, along with many other things,
>>>
>>>
>>but
>>my
>>
>>
>>>36" TV  &VCR/  stereo stuff were all OK.  It is worth the peace of
>>>
>>>
>>mind.
>>
>>
>>>Larry
>>>
>>>Larrys TV Service
>>>Broken Arrow OK 74011
>>>phone 918-455-1041
>>>Fax 918-451-4485
>>>e-mail lpoffen@xxxxxxx
>>>----- Original Message -----
>>>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
>>>To: <techassist@xxxxxxxxxxxxx>
>>>Sent: Friday, April 30, 2004 9:06 AM
>>>Subject: [TechAssist] use a battery backup UPS for TV,DVD,surround amp
>>>system protection ?
>>>
>>>
>>>
>>>
>>>>I never heard of anyone doing this, but I've had this thought for a
>>>>
>>>>
>>few
>>
>>
>>>>years:
>>>>use a heavy battery back up UPS like used on PC systems for an
>>>>entertainment center. Many ills are from power
>>>>fluctuations,sags,surges,etc. TV EEPROMs corrupted, power supplies
>>>>damaged, pro-jo CRTs damaged with  a spot because it went down at
>>>>
>>>>
>>once
>>
>>
>>>>without proper power down,etc.
>>>>Most equipement is not a heavy current draw.
>>>>Can this be done and should it?
>>>>I have a Zenith 50" projection TV (not wide screen,standard 3:4)
>>>>
>>>>
>>which
>>
>>
>>>>is rated at 215 watts (2.8A) "max".
>>>> I think my VCR/DVD deck pulls maybe 30 watts.
>>>>My Bose "lifestyle 7" surround amp, I don't know the wattage.
>>>>And a cable box maybe another 30 watts?
>>>>I'm guessing 300-400 watts max running everything
>>>> if using the sound system as well. Much less if using only the
>>>>
>>>>
>>projo's
>>
>>
>>>>speakers.
>>>>Now most of these UPS units are in standby mode and  the connected
>>>>
>>>>
>>gear
>>
>>
>>>>is running off line current until there is a power loss, which time
>>>>ultra-fast switching transferrs power to the battery system. This
>>>>
>>>>
>>would
>>
>>
>>>>be only needed for intermittant power fluctuations, or if lost
>>>>
>>>>
>>totally,
>>
>>
>>>>enough time to safely power off the audio/video system.
>>>>A 6 outlet power strip plugged into the UPS would be convenient.
>>>>What would be a good power rating for a UPS?
>>>>Twice needed wattage? whats rule of thumb, and also whats your
>>>>
>>>>
>>feedback
>>
>>
>>>>on this idea?
>>>>Phil Bader
>>>>
>>>>--
>>>>
>>>>Philip Bader
>>>>Jan Phyl TV Inc. (estab. 1976)
>>>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>>>Fax (863) 299-8821
>>>>email: tjanphyl@xxxxxxxxxxxxxxx
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>



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