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Registered Member #3781
Joined: Sat Mar 26 2011, 02:25AM
Location:
Posts: 701
Apparently my friend has around 20 of these transformers and wants to sell them to me (for cheap I presume) what are they? what can I use them for? and are they worth buying? I actually have not seen them and I only have this pic to go off of, thanks in advance for any feedback
Registered Member #3888
Joined: Sun May 15 2011, 09:50PM
Location: Erie, PA
Posts: 649
i ripped a large, old ballast apart and it had a big pcb filled capacitor from GE, and a very large inductor. but the whole thing was potted with tar, which is messy. newer ones will probably be potted with epoxy, so don't expect to take them apart. i imagine their only use would be what they are intended for: ballasting stuff.
Registered Member #816
Joined: Sun Jun 03 2007, 07:29PM
Location:
Posts: 156
These are the starter less type of florescent lamp ballast. The old (heavy) style were an iron cored inductor, with a transformer or extra winding for heating the tube filaments,
I had a box of very similar looking ones in my shed which I had kept for 10 or 12 years till they started going rusty, then threw them out as I couldn’t think of any use for them either.
A lot of the lightweight modern ones tend to be electronic, but unless they are not filled with resin, so as you can take them apart, are not probably of much use also.
Complete light fittings with lamps are probably more use to keep around, as people tend to ask if they need light installed in an attic or garage or something.
Registered Member #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
Looks like exactly what I just bought at a antique shop. Mine says its a ballast for florescent lamps, two. It also says from red to white (neutral ) is 775 volts. So I stuck a rectifier bridge to it and I can charge my 1kj 450 volt capacitor bank in around 30-40 seconds. My ballast says the input is 120 volts at 1 amp. I picked this up for $2 because it was unlisted so she had no idea what it was and asked for $5,i bargin her $2
Sorry for quality but I did this post off my phone...
Registered Member #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
Forty wrote ...
i guess mine was really old then. even your antique shop one says no pcb's. i cleaned the cap up and now i have a nice shiny pcb capacitor :)
It also says china 2002 on the back o mine isn't too old because the company still sells these magnetic ballast heh.. I had fun powering a light with it, made a lot of crackling sounds for 10 minutes then it tan quiet, at a steady middle temperature of 147F
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