| Attachment | Size |
|---|---|
 comp1.jpg | 18.46 KB |
| step_up_transformer.gif | 30.65 KB |
| comp2.gif | 15.44 KB |
Hello forum members,
I am deciding whether a diode/capacitor CW circuit,or a step-up
power hand-wound step-up transformer is easier,and more
practical;I am only needing at most a voltage multiplier for my
electric pmdc powered bike trailer with dual curry brushed
motors-I have magnet wire,T200 toroid,fiberglass tape,some
electrolytic caps,hi amp diodes(Schottky,FAST,hi-amp) so either way it would be practical
to make a decent working voltage multiplier!
I basically want to know which "vm" circuits that the members have
used with good results,and what circuit is more
efficient/practical??
btw,I have uploaded a few examples of voltage multiplier circuits
similar to what I will like to try,although the sytep transformer
core I will be using is a toroid design,and not a split-bobbin/E core
design!!
Thanks in advance for a reply!
I would like to know this as well, as I want to use one 3.3v 100Amhr Lifepo4 cell scaled up to 24v volts to run a scooter.
Whats the most efficient way to convert this voltage?
Transformers are not typically what is used to up convert a DC source.
I would recommend using a DC2DC controller ref design from a semi chip company like linear, analog, or whatever you fancy.
They typically employ an inductor (no hand wound stuff) /w FET switches and a controller to jack the voltage up.
Or look at companies that sell modules which have an entire switching supply encapsulated in a box.
However it sounds like this is a project to learn, so so maybe you like doing hand wound transformers route.
This page has an EV voltage step-up design: http://www.re-voltage.eu/electronics.html
The author may be able to supply an actual device or more details. He posts on Endless Sphere as Tiberius
Wookey
Sakura s50 (Efun A)
In reference to the last request, there is also a yahoo group called "switchmode" about an SMPS design for a bike motor controller that does this--steps up from a lower voltage higher-current source to a higher-voltage lower-current source. The designs are available on that group in the Files section.
--
Michael Elliott
Cybernetic Necromancers, Discorporated
Phoenix, AZ
Watch me build an electric-assisted recumbent bike from recycled junk:
http://electricle.blogspot.com