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4hv.org :: Forums :: General Science and Electronics
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Buck Boost

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Thomas W
Wed Oct 26 2011, 02:28PM Print
Thomas W Registered Member #3324 Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
Hi,
i have a 240v -> 110v transformer, i need 350v to charge a capacitor
am i able to wire it up in a buck - boost formation i was reading about it some time ago
on a website?

thanks,
Tom W
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Inducktion
Wed Oct 26 2011, 02:47PM
Inducktion Registered Member #3637 Joined: Fri Jan 21 2011, 11:07PM
Location: Buffalo, NY
Posts: 1068
Why not just use a boost/flyback converter? A buck-boost converter would output a voltage opposite of what the input is, by the way.

I actually recently made a regulated flyback converter. I can make a schematic, if you want, and it's easy to make, too.
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Ash Small
Wed Oct 26 2011, 03:00PM
Ash Small Registered Member #3414 Joined: Sun Nov 14 2010, 05:05PM
Location: UK
Posts: 4245
Inducktion wrote ...


Do you like my resonant duck?


What frequency does your duck resonate at, Induction?

(Sorry for the 'hijack', Tom, but I've been puzzling over this for some time now)
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Thomas W
Wed Oct 26 2011, 03:23PM
Thomas W Registered Member #3324 Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
hah np made me laugh to :P

i tryed what i had in mind and got my 350v, for some reason i also blew my multimeter :(

Link2
from Link2
very useful reference!
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Pinky's Brain
Wed Oct 26 2011, 03:39PM
Pinky's Brain Registered Member #2901 Joined: Thu Jun 03 2010, 01:25PM
Location:
Posts: 837
That's not a buck/boost in the sense it's used here (switching power supplies). Also that doesn't create a DC voltage. Even when rectified it's an inefficient capacitor charger (normal transformers don't really like being effectively short circuited at the secondary side, capacitor chargers are generally similar to switching power supplies).
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Thomas W
Wed Oct 26 2011, 04:42PM
Thomas W Registered Member #3324 Joined: Sun Oct 17 2010, 06:57PM
Location:
Posts: 1276
yeh i know i abstent mindedly called it the wrong name :3
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