Most amazing dumpster dive ever!!!! - Page 10

Shoog · 18th April 2006, 09:38 PM

Have been looking for old fluorescant light to salvage the chokes. Noticed that the local paper were having there offices refurbished and that all the lights were likely to go. Thought it would be soon, but had to go on holiday for a week. When I got back they were all gone. What a bummer

At least half of all I have built has been from dumpster salvage.

Shoog

jaudio · 18th April 2006, 09:49 PM

Shoog

In the lights,where are the chokes located

lndm · 19th April 2006, 12:45 AM

And what values?

tade · 19th April 2006, 04:46 PM

How are those units useful?

Also, I just found my second variac in the dumpster...

filholder · 19th April 2006, 06:41 PM

I have so far in london had 2 dyson vacum cleaners (both perfect), a samsung 15" tft monitor ( perfect) 2 Arcam alpha 5cd plus CD players from the same shop within a month (really weird i know) which needed work but cost about £10 each to repair. A rotel 5 disc HDCD player which had a slightly noisey transformer , a teac cd player , a Project 1.2 turntable, several 100m rolls of cat 5e (solid core) the list just goes on. Three ibm latops pull from a skip

Countless usable pc's , it has to be said that Londener are very wastful but the quilty of what i have picked up seem to be declining so i think recycling schemes and the fact business cant just throw hardware in the rubbish seems to be really kicking in. Maybe better for the enviroment but it worse for my wombling. Oh well been a good run.

Phil

Shoog · 19th April 2006, 07:27 PM

Hi there,
If looking for chokes in fluorsecent lights, you need to look at reasonably old ones as they have all gone switch mode now.
They can be found within the light fixture. They can be used as plate chokes in valve preamp circuits. The bigger ones can be used as plate chokes in parafeed output applications. I bought a pair for 100W lamps for £6.00 each from an old light supplier. These seem to indicate that they can handle 0.9A of current. Haven't tried them yet, but am planning on trying in a preamp and a parafeed amp.

Shoog

planet10 · 19th April 2006, 08:10 PM

Quote:

Originally posted by Shoog
They can be found within the light fixture. They can be used as plate chokes in valve preamp circuits.

You are talking about the ballasts? I don't know how many of these i've tossed...

dave

tomtt · 20th April 2006, 12:38 AM

Originally posted by planet10

You are talking about the ballasts? I don't know how many of these i've tossed...

dave
```````````````````````````````````````````````
scrap copper = money

http://www.recycle.net/Metal-N/Copper/index.html

lndm · 20th April 2006, 01:15 AM

I just went and pulled one. On to the bench, just give me a minute here..... haha.

240V / 40W
DCR 27 ohms

It reduces the voltage on a 10k resistor by 3dB at 2kHz. Predictable effect below this. Above this it rolls off to a minimum at 20kHz.

So, inductance is approximately 0H8 and interwinding capacitance is approx 80pF.

Zero Cool · 20th April 2006, 01:23 AM

CRAP i missed a FREE pair of Macintosh MC30 amps on Craigslist today!

Apparantly the poor owner didnt know what they had and have been bombarded with emails all day even after they pulled the and and posted that they were gone!

Hell ya i would have left work to go get those! but i didnt see them until it was way too late. A single one just sold on ebay for $510.00!!!

Sigh....

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18th April 2006, 09:38 PM	#91
Shoog diyAudio Member Join Date: Aug 2002 Location: Eire	Have been looking for old fluorescant light to salvage the chokes. Noticed that the local paper were having there offices refurbished and that all the lights were likely to go. Thought it would be soon, but had to go on holiday for a week. When I got back they were all gone. What a bummer At least half of all I have built has been from dumpster salvage. Shoog

18th April 2006, 09:49 PM	#92
jaudio diyAudio Member Join Date: Oct 2004	Shoog In the lights,where are the chokes located

19th April 2006, 12:45 AM	#93
lndm diyAudio Member Join Date: Mar 2006 Location: nsw	And what values?

19th April 2006, 04:46 PM	#94
tade diyAudio Member Join Date: Feb 2005 Location: Ralieigh nc	How are those units useful? Also, I just found my second variac in the dumpster...

19th April 2006, 06:41 PM	#95
filholder diyAudio Member Join Date: Jan 2005 Location: london	I have so far in london had 2 dyson vacum cleaners (both perfect), a samsung 15" tft monitor ( perfect) 2 Arcam alpha 5cd plus CD players from the same shop within a month (really weird i know) which needed work but cost about £10 each to repair. A rotel 5 disc HDCD player which had a slightly noisey transformer , a teac cd player , a Project 1.2 turntable, several 100m rolls of cat 5e (solid core) the list just goes on. Three ibm latops pull from a skip Countless usable pc's , it has to be said that Londener are very wastful but the quilty of what i have picked up seem to be declining so i think recycling schemes and the fact business cant just throw hardware in the rubbish seems to be really kicking in. Maybe better for the enviroment but it worse for my wombling. Oh well been a good run. Phil

19th April 2006, 07:27 PM	#96
Shoog diyAudio Member Join Date: Aug 2002 Location: Eire	Hi there, If looking for chokes in fluorsecent lights, you need to look at reasonably old ones as they have all gone switch mode now. They can be found within the light fixture. They can be used as plate chokes in valve preamp circuits. The bigger ones can be used as plate chokes in parafeed output applications. I bought a pair for 100W lamps for £6.00 each from an old light supplier. These seem to indicate that they can handle 0.9A of current. Haven't tried them yet, but am planning on trying in a preamp and a parafeed amp. Shoog

20th April 2006, 12:38 AM	#98
tomtt diyAudio Member Join Date: Aug 2002 Location: kansas city mo, and on occasion, around the world ... Blog Entries: 15	Originally posted by planet10 You are talking about the ballasts? I don't know how many of these i've tossed... dave ``````````````````````````````````````````````` scrap copper = money http://www.recycle.net/Metal-N/Copper/index.html

20th April 2006, 01:15 AM	#99
lndm diyAudio Member Join Date: Mar 2006 Location: nsw	I just went and pulled one. On to the bench, just give me a minute here..... haha. 240V / 40W DCR 27 ohms It reduces the voltage on a 10k resistor by 3dB at 2kHz. Predictable effect below this. Above this it rolls off to a minimum at 20kHz. So, inductance is approximately 0H8 and interwinding capacitance is approx 80pF.

20th April 2006, 01:23 AM	#100
Zero Cool Audio Junkie diyAudio Member Join Date: Sep 2004 Location: MN	CRAP i missed a FREE pair of Macintosh MC30 amps on Craigslist today! Apparantly the poor owner didnt know what they had and have been bombarded with emails all day even after they pulled the and and posted that they were gone! Hell ya i would have left work to go get those! but i didnt see them until it was way too late. A single one just sold on ebay for $510.00!!! Sigh....

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