Cisco power supply?

TDWesty · 6th February 2007, 02:44 PM

I have a spare Cisco power supply from a Cat 6000 switch, which is rated at 1000W, 48VDC output. Is the transformer from this unit likely to yield something useful for a chipamp (briangt) project? I haven't yet pulled it apart, as it still has some value. Or is 48VDC too much to deal with? I assume it is regulated, so the transformer output will be higher than this.

I'll try to check the secondaries and see what they actually put out.

On a similar vein, are UPS transformers any good for anything? All the small ones under 1000VA seem to be 12V only.

zlast · 6th February 2007, 02:49 PM

These are switching power supplies...no transformer to pull out..and for what a 6000 power supply costs...you could just sell it and buy an amplifier...

TDWesty · 6th February 2007, 03:16 PM

Quote:

Originally posted by zlast
These are switching power supplies...no transformer to pull out..and for what a 6000 power supply costs...you could just sell it and buy an amplifier...

Thanks. So is it safe to assume that all of this stuff uses switching PS these days? From the size of the Cisco, I thought maybe it wasn't. It's only the 1000W unit, so it doesn't have much value these days... we upgraded to 1800W supplies.

Are the UPS units also switch based? An APC 500VA UPS has a decent sized transformer, but I assume only 12-15V.

zlast · 6th February 2007, 04:49 PM

Most UPS have a transformer...but its probably 12 volt out to charge the batteries...so uses are rather limited...however any UPS or power supply may have capacitors, heat sinks, bridge rectifiers and other items of interest..

collumbo · 17th February 2007, 09:00 PM

Hi,

we are outpulling some defect (site wireing fault) APCs UPSs 700 and 1000VA. If anyone need things are useable off this def. pieces...
but the are very heavy; cost alot of shipping...

please mail soon if interestetd, otherwise they will be dumped...

6th February 2007, 02:44 PM	#1
TDWesty diyAudio Member Join Date: Jun 2005 Location: Victoria, BC	Cisco power supply? I have a spare Cisco power supply from a Cat 6000 switch, which is rated at 1000W, 48VDC output. Is the transformer from this unit likely to yield something useful for a chipamp (briangt) project? I haven't yet pulled it apart, as it still has some value. Or is 48VDC too much to deal with? I assume it is regulated, so the transformer output will be higher than this. I'll try to check the secondaries and see what they actually put out. On a similar vein, are UPS transformers any good for anything? All the small ones under 1000VA seem to be 12V only. __________________ Shawn NAD 3125 & 3020 amps, 4125 tuner / Rotel RCD-965BX CD / B&O 2400 / Nakamichi BX-125 / PSB 70R speakers / BrianGT chipamp in progress...

6th February 2007, 02:49 PM	#2
zlast diyAudio Member Join Date: Sep 2004 Location: none	cat6000 These are switching power supplies...no transformer to pull out..and for what a 6000 power supply costs...you could just sell it and buy an amplifier... __________________ none

6th February 2007, 04:49 PM	#4
zlast diyAudio Member Join Date: Sep 2004 Location: none	UPS Most UPS have a transformer...but its probably 12 volt out to charge the batteries...so uses are rather limited...however any UPS or power supply may have capacitors, heat sinks, bridge rectifiers and other items of interest.. __________________ none

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17th February 2007, 09:00 PM	#5
collumbo diyAudio Member Join Date: Feb 2007 Location: neustadt	Hi, we are outpulling some defect (site wireing fault) APCs UPSs 700 and 1000VA. If anyone need things are useable off this def. pieces... but the are very heavy; cost alot of shipping... please mail soon if interestetd, otherwise they will be dumped...

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