 12th January 2007, 17:20 #1
 Join Date
 Jan 2007
 Posts
 4
 Helped
 0 / 0
 Points
 1,111
 Level
 7
step up dc voltage
My knowledge of electronics doesn't go as far as that, as increasing a given DC voltage. I would much appreciate a general explanation, one that I could use generally for different desired voltages.
Thanks much.
Bob Haskell
 12th January 2007, 22:19 #2
 Join Date
 Jul 2004
 Posts
 182
 Helped
 7 / 7
 Points
 2,954
 Level
 12
12v to 40v
If signal => design a level shifter
If power => dc to dc converter (boost)
 12th January 2007, 23:10 #3
 Join Date
 Oct 2004
 Location
 West Coast
 Posts
 7,943
 Helped
 2304 / 2304
 Points
 160,151
 Level
 95
how to up dc voltage
Use the LM2577ADJ adjustable stepup converter ..
Here is its data sheet:
http://www.rosehulman.edu/~herniter...ets/LM2577.pdf
Regards,
IanP
 12th January 2007, 23:10
 13th January 2007, 10:02 #4
 Join Date
 Oct 2005
 Posts
 41
 Helped
 3 / 3
 Points
 1,665
 Level
 9
how to step up dc voltage
Dear:
you an use DC DC converter, not transformer as the dumpfrog answer you because if u apply DC vltage on transformer the output will be zero volt.
BR
 13th January 2007, 10:02
 13th January 2007, 15:16 #5
 Join Date
 Sep 2006
 Posts
 440
 Helped
 44 / 44
 Points
 3,085
 Level
 13
lm2577 projects
The basic principle is converting the original DC into AC, then step this AC up to the desired value by a transformer, finally rectify it to get the necessary DC voltage.
One of the most important pros of this principle is we can use the AC with the frequency higher than the mains, upto hundreds thousand hertz, so we can use the smaller transformer, smaller filtering capacitors and inductors, thus get the smaller and lighter DCDC converters. In the other hand, we can stabilize the output voltage easily.
Depending the power you need, or how important your project is, so you can design by yourself the simple circuit with 2 transistors and a transformer, or use a 555 timer as astable multivibrator with the power amplifier on transistors, or design a more complicated DC boost converter, or use the dedicated ICs for this purpose such as popular MC34063 from ON semiconductor, or buy the readymade from any professional manufacturer as Delta, Deer, ... from China.
You will find out it is not as so complicated as you imagine at the beginning. Free and good document are everywhere on the internet and Google is our best friend.
Goodluck
nguyennam
 13th January 2007, 15:16
 13th January 2007, 18:08 #6
 Join Date
 Dec 2005
 Posts
 129
 Helped
 8 / 8
 Points
 2,043
 Level
 10
step up dc voltage
Too difficult for U. I think that you should use LT1070HV.
Good luck for U !
 14th January 2007, 06:02 #7
 Join Date
 Aug 2006
 Posts
 84
 Helped
 17 / 17
 Points
 1,933
 Level
 10
 14th January 2007, 17:33 #8
 Join Date
 Aug 2006
 Posts
 3
 Helped
 0 / 0
 Points
 1,499
 Level
 8
12v to 40v
i hope tht is too easy to implement with 6v..
now u can use a no. of diodes in series to get a higher voltage
i hope it will help u otherwise u can mail me
jain.mayank@gmail.com
Added after 3 minutes:
otherwise one book is thr..tell me ur id...actually forgot the name...i will send u name of tht book ...actually i thought u want a regulator of 40 v
but tht book has the step ups in dc
mail me on my gmail id
i will reply back
 15th January 2007, 03:54 #9
 Join Date
 Jan 2007
 Posts
 8
 Helped
 0 / 0
 Points
 1,130
 Level
 7
simple voltage up converter
If your looking for a cheap way out and if your input is going to stay the same or go to 0v 2 transistors in a darlington hookup and a few resistors should do.Just do the math.
 18th January 2007, 08:53 #10
 Join Date
 Jan 2007
 Posts
 33
 Helped
 1 / 1
 Points
 1,616
 Level
 9
12v to 40v converter
How about using a voltage tripler..google it to get the circuit
BR
vabzter
 19th January 2007, 02:51 #11
dc step up voltage
i agree with nguyennam ,basic fundamental of converter DCDC
 19th January 2007, 06:07 #12
 Join Date
 Apr 2005
 Posts
 389
 Helped
 53 / 53
 Points
 4,120
 Level
 15
dc dc stepup principles
Originally Posted by haskellbob
depending of this, the circuit topology will be completely different, also the output noise, etc.
 19th January 2007, 07:02 #13
 Join Date
 Jul 2005
 Posts
 10
 Helped
 0 / 0
 Points
 2,012
 Level
 10
dc voltage step up
Originally Posted by haskellbob
http://www.edaboard.com/viewtopic.ph...916&highlight=
 19th January 2007, 09:14 #14
 Join Date
 Jan 2007
 Posts
 45
 Helped
 4 / 4
 Points
 1,784
 Level
 9
dc voltage increasing circuit.*pdf
dear
here u can use lm1577 voltage step up regulator..
The LM1577/LM2577 are monolithic integrated circuits that provide all of the power and control functions for stepup (boost), flyback, and forward converter switching regulators. The device is available in three different output voltage versions: 12V, 15V, and adjustable
 26th January 2007, 14:08 #15
 Join Date
 Jan 2006
 Location
 Singapore
 Posts
 426
 Helped
 45 / 45
 Points
 4,572
 Level
 16
converter 12v to 40v
Some references on DCDC step up regulator.
http://www.siongboon.com/projects/20...dc_converter/
LinkBacks (?)
 6th May 2014, 00:54

DCDC Converter
Refback This thread20th February 2012, 13:33