Need some transformer help
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stretch2011
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- Location: ohio
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Need some transformer help
Picked up this stancor for $4.00 figuring what the hell $4.00 is worth the risk. Tested it today and with 125v primaries its running around 386ish volts on the secondary. No ground or 6.3v supplies. I was hoping to build a matchless hotbox with it but im not sure what all i could use this for. Give me some ideas please
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Stevem
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Re: Need some transformer help
That transformer is a 400 volt RMS photo flash pump!
With no center tap you would have to use a SS bridge recto set up, but from the photo with no scale to judge its size from its hard to say how much current it can output, how big is it compared to a quarter?
It seems to made to pump up a large filter, and they seem to go for some 25 bucks on eaby, so for 4 bucks ya did ok!
With no center tap you would have to use a SS bridge recto set up, but from the photo with no scale to judge its size from its hard to say how much current it can output, how big is it compared to a quarter?
It seems to made to pump up a large filter, and they seem to go for some 25 bucks on eaby, so for 4 bucks ya did ok!
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Re: Need some transformer help
Secondary is 380V @20mA so not many options other than maybe a tube preamp or buffered fx loop.stretch2011 wrote:Picked up this stancor for $4.00 figuring what the hell $4.00 is worth the risk. Tested it today and with 125v primaries its running around 386ish volts on the secondary. No ground or 6.3v supplies. I was hoping to build a matchless hotbox with it but im not sure what all i could use this for. Give me some ideas please
TM
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Stevem
- Posts: 4984
- Joined: Fri Jan 24, 2014 3:01 pm
- Location: 1/3rd the way out one of the arms of the Milkyway.
Re: Need some transformer help
Search around for a used 12 volt switching power supply as used in a lot of video gear to power filaments with in some 12A type tubes and build a preamp section to mess with!
When I die, I want to go like my Grandfather did, peacefully in his sleep.
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
Not screaming like the passengers in his car!
Cutting out a man's tongue does not mean he’s a liar, but it does show that you fear the truth he might speak about you!
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stretch2011
- Posts: 501
- Joined: Tue Oct 21, 2014 2:53 am
- Location: ohio
- Contact:
Re: Need some transformer help
He he pre amps are about be made! I'm relatively sure the place I got it from have more. They also have some 6.3v filament transformers for around 3.50-$4.00. I love stumbling onto small treasure troves!!! Thanks everybody!
Last edited by stretch2011 on Mon Dec 08, 2014 8:47 pm, edited 1 time in total.
Re: Need some transformer help
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Last edited by matt h on Fri Mar 27, 2015 2:43 pm, edited 1 time in total.
Re: Need some transformer help
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Re: Need some transformer help
Try to avoid any SMPS feeding your filaments or near your Hotbox guts, they are usually "dirty" in a switching, digital way.
Try to use a plain old 60Hz conventional filament transformer.
Try to use a plain old 60Hz conventional filament transformer.